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This document consists of 16 printed pages. DC (SJF/SW) 77045/4 © UCLES 2014 [Turn over *4286478726* BIOLOGY 0610/33 Paper 3 Extended May/June 2014 1 hour 15 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Answer all questions. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. Cambridge International Examinations Cambridge International Level 1/Level 2 Certificate The syllabus is approved for use in England, Wales and Northern Ireland as a Cambridge International Level 1/Level 2 Certificate. www.onlineexamhelp.com www.onlineexamhelp.com
2 0610/33/M/J/14© UCLES 2014 1 Fungi were often classified as different species according to their visible reproductive structures. Penicillium dodgei and Eupenicillium brefeldianum were classified as different species because they had different types of spores. However, recently it was recognised that the spores of P. dodgei were asexual spores, while those of E. brefeldianum were sexual spores. A comparison of the DNA of these two fungi shows that they are the same species. This fungus is now known as Penicillium brefeldianum. (a) State how DNA analysis can show that P. dodgei and E. brefeldianum are the same species. ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[2] (b) (i) Describe how a fungus, such as P. brefeldianum, reproduces asexually. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[3] (ii) Discuss the advantages of asexual reproduction. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[3] [Total: 8]
3 0610/33/M/J/14© UCLES 2014 [Turn over 2 Sulfur dioxide (SO2) can cause acid rain. (a) Name one other pollutant that can cause acid rain. ...............................................................................................................................................[1] (b) Describe the effects of acid rain on the environment. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[3] (c) State three methods to reduce atmospheric SO2 pollution. 1 ................................................................................................................................................ ................................................................................................................................................... 2 ................................................................................................................................................ ................................................................................................................................................... 3 ................................................................................................................................................ ................................................................................................................................................... [3]
4 0610/33/M/J/14© UCLES 2014 (d) Scientists in China measured the concentration of sulfur dioxide (SO2) in the atmosphere and sulfur in plant tissues from 1990 until 2005. They did not record any measurements between 1990 and 1996. Their results are shown in Fig. 2.1. 1989 0 100 200 300 400 500 600 700 800 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 1990 1996 1997 1998 1999 2000 time/ year atmospheric SO2 /µgm–3 plant tissue sulfur/% 2001 2002 2003 2004 2005 2006 plant tissue S atmospheric SO2 Key: Fig. 2.1 (i) Describe the trends in the concentrations of sulfur found in the atmosphere and in the plant tissues as shown in Fig. 2.1. You will gain credit for using the data in the graph to support your answer. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[3]
5 0610/33/M/J/14© UCLES 2014 [Turn over (ii) Suggest why the concentration of sulfur in the plant tissues was calculated as a percentage of the dry mass of the plant tissue. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[2] [Total: 12]
6 0610/33/M/J/14© UCLES 2014 3 (a) Define the term sensitivity. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[2] (b) Describe how voluntary actions differ from involuntary actions. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[2] (c) Name the neurone that transmits impulses from a receptor. ...............................................................................................................................................[1] (d) Reaction time is defined as the time taken to respond to a stimulus. During a swimming relay race, the reaction times of four swimmers in two teams, A and B, were recorded. In each team, swimmer 1 responded to the sound of the start gun; swimmers 2, 3 and 4 responded to seeing the previous swimmer touch the swimming pool wall. Table 3.1 shows the reaction times for the swimming relay teams. Table 3.1 swimmer reaction time/s team A team B 1 0.81 0.75 2 0.48 0.40 3 0.58 0.06 4 0.31 0.35 www.onlineexamhelp.com www.onlineexamhelp.com
7 0610/33/M/J/14© UCLES 2014 [Turn over Compare the reaction time of swimmer 1 in each team with the reaction times of the other swimmers in each team. Use the information in Table 3.1 to support your answer. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[3] (e) Adrenaline is often secreted during sporting competitions. Outline how adrenaline affects the performance of a swimmer. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[3] [Total: 11]
8 0610/33/M/J/14© UCLES 2014 4 (a) Fig. 4.1 shows a section through the anther of a lily flower. The cells in the centre are dividing by meiosis. Fig. 4.1 (i) Name the product of meiosis that is formed in anthers. .......................................................................................................................................[1] (ii) Explain the importance of meiosis in sexual reproduction. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[2]
9 0610/33/M/J/14© UCLES 2014 [Turn over (b) Fig. 4.2 shows a flower of Lilium polyphyllum, a lily that grows in the Himalayan mountains. This species is cross-pollinated by insects. Fig. 4.2 (i) Explain what is meant by cross-pollination. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[2] (ii) Name one feature visible in Fig. 4.2 that helps to attract insects. .......................................................................................................................................[1]
10 0610/33/M/J/14© UCLES 2014 (c) Plants of this species that grow at low altitudes produce flowers 60 days before the plants of the same species that grow at high altitudes. (i) Suggest one environmental reason why lilies that grow at lower altitudes flower earlier than the lilies at higher altitudes. .......................................................................................................................................[1] (ii) Explain why flowering time is an example of continuous variation. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[2] (d) Scientists think that plants of L. polyphyllum growing at high altitudes may evolve into a new species. Explain how natural selection could lead to the evolution of a new species of lily. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[5] [Total: 14]
11 0610/33/M/J/14© UCLES 2014 [Turn over 5 Fig. 5.1 shows a cross-section of a kidney. E F G Fig. 5.1 (a) Name the structures labelled, E, F and G as shown in Fig. 5.1. E ..................................................................................... F ...................................................................................... G ..................................................................................... [3] (b) Explain the function of the renal capsule in the kidney. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[3]
12 0610/33/M/J/14© UCLES 2014 (c) Glucose is reabsorbed, back into the blood, by active transport. Define active transport. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[2] (d) Give one example, other than glucose, of a substance that is reabsorbed into the blood from the renal tubule. ...............................................................................................................................................[1] (e) Dialysis is a treatment for kidney disease. Fig. 5.2 shows a dialysis machine. dialysis machine used dialysis fluid fresh dialysis fluid blood pump arm Fig. 5.2
13 0610/33/M/J/14© UCLES 2014 [Turn over (i) The composition of the dialysis fluid changes as it passes through the dialysis machine. Complete Table 5.1 using the words ‘low’, ‘high’, ‘same’ or ‘none’ to show how the concentration of each substance changes in the dialysis fluid. The last one has been done for you. Table 5.1 concentration of substance in: substance blood before dialysis used dialysis fluid fresh dialysis fluid glucose normal salts high urea high toxins high high low [3] (ii) Explain how a dialysis machine filters blood. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[4] (f) Kidney transplants are the most common organ transplants. Describe the advantages of a kidney transplant compared with dialysis. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[3]
14 0610/33/M/J/14© UCLES 2014 (g) Before a kidney is transplanted, it is important to match the tissue type of the donor with the tissue type of the recipient. State why this is necessary. ................................................................................................................................................... ...............................................................................................................................................[1] [Total: 20] 6 Fig. 6.1 shows the carbon cycle. P, Q, R, S and T each represent a part of the carbon cycle. P R T Q S photosynthesis respiration respiration respiration death carbonisation carbonisation deathfeeding combustion Fig. 6.1 (a) Complete Table 6.1 by identifying P, Q, R and S and the name of one example of a carbon compound found in each. T has been completed for you. Table 6.1 letter part of cycle carbon compound found in each part P Q R S T fossil fuels, e.g. natural gas methane [4]
15 0610/33/M/J/14© UCLES 2014 [Turn over (b) Photosynthesis is a very important process in the carbon cycle. Explain how the process of photosynthesis converts carbon compounds from P to carbon compounds in Q. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[5] (c) The rate of photosynthesis varies as a result of changes in environmental factors. State one environmental factor and explain how it can affect the rate of photosynthesis. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[3]
16 0610/33/M/J/14© UCLES 2014 Copyright Acknowledgements: Question 2 Figure 2.1 © Xue-Yan Liu, Hua-Yun Xiao, Cong-Qiang Liu, Hong-Wei Xiao, Yan-Li Wang; Assessment of atmospheric sulphur with the epilithic moss Haplocladium microphyllum: Evidences from tissue sulphur and d34S analysis. Environmental Pollution; Elsevier; 2009. Question 4 Figure 4.1 © Biodisc; Cross-section of a Lily anther showing the second meiotic division (Lilium), a monocot. LM X65; Visuals Unlimited; 2011. Question 4 Figure 4.2 © Anurag Dhyani; LILIES and Related Plants, 2011-2012. Phenology of Lilium polyphyllum in Garhwal Himalaya, India; RHS Lily Group; 2011. Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. (d) Environmental factors can be controlled in glasshouses. Describe how three environmental factors are controlled in a glasshouse to improve crop yield. factor 1: ..................................................................................................................................... how is it controlled: ................................................................................................................... ................................................................................................................................................... factor 2: ..................................................................................................................................... how is it controlled: ................................................................................................................... ................................................................................................................................................... factor 3: ..................................................................................................................................... how is it controlled: ................................................................................................................... ................................................................................................................................................... [3] [Total: 15]

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0610_s14_qp_33

  • 1. This document consists of 16 printed pages. DC (SJF/SW) 77045/4 © UCLES 2014 [Turn over *4286478726* BIOLOGY 0610/33 Paper 3 Extended May/June 2014 1 hour 15 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Answer all questions. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. Cambridge International Examinations Cambridge International Level 1/Level 2 Certificate The syllabus is approved for use in England, Wales and Northern Ireland as a Cambridge International Level 1/Level 2 Certificate. www.onlineexamhelp.com www.onlineexamhelp.com
  • 2. 2 0610/33/M/J/14© UCLES 2014 1 Fungi were often classified as different species according to their visible reproductive structures. Penicillium dodgei and Eupenicillium brefeldianum were classified as different species because they had different types of spores. However, recently it was recognised that the spores of P. dodgei were asexual spores, while those of E. brefeldianum were sexual spores. A comparison of the DNA of these two fungi shows that they are the same species. This fungus is now known as Penicillium brefeldianum. (a) State how DNA analysis can show that P. dodgei and E. brefeldianum are the same species. ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[2] (b) (i) Describe how a fungus, such as P. brefeldianum, reproduces asexually. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[3] (ii) Discuss the advantages of asexual reproduction. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[3] [Total: 8]
  • 3. 3 0610/33/M/J/14© UCLES 2014 [Turn over 2 Sulfur dioxide (SO2) can cause acid rain. (a) Name one other pollutant that can cause acid rain. ...............................................................................................................................................[1] (b) Describe the effects of acid rain on the environment. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[3] (c) State three methods to reduce atmospheric SO2 pollution. 1 ................................................................................................................................................ ................................................................................................................................................... 2 ................................................................................................................................................ ................................................................................................................................................... 3 ................................................................................................................................................ ................................................................................................................................................... [3]
  • 4. 4 0610/33/M/J/14© UCLES 2014 (d) Scientists in China measured the concentration of sulfur dioxide (SO2) in the atmosphere and sulfur in plant tissues from 1990 until 2005. They did not record any measurements between 1990 and 1996. Their results are shown in Fig. 2.1. 1989 0 100 200 300 400 500 600 700 800 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 1990 1996 1997 1998 1999 2000 time/ year atmospheric SO2 /µgm–3 plant tissue sulfur/% 2001 2002 2003 2004 2005 2006 plant tissue S atmospheric SO2 Key: Fig. 2.1 (i) Describe the trends in the concentrations of sulfur found in the atmosphere and in the plant tissues as shown in Fig. 2.1. You will gain credit for using the data in the graph to support your answer. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[3]
  • 5. 5 0610/33/M/J/14© UCLES 2014 [Turn over (ii) Suggest why the concentration of sulfur in the plant tissues was calculated as a percentage of the dry mass of the plant tissue. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[2] [Total: 12]
  • 6. 6 0610/33/M/J/14© UCLES 2014 3 (a) Define the term sensitivity. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[2] (b) Describe how voluntary actions differ from involuntary actions. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[2] (c) Name the neurone that transmits impulses from a receptor. ...............................................................................................................................................[1] (d) Reaction time is defined as the time taken to respond to a stimulus. During a swimming relay race, the reaction times of four swimmers in two teams, A and B, were recorded. In each team, swimmer 1 responded to the sound of the start gun; swimmers 2, 3 and 4 responded to seeing the previous swimmer touch the swimming pool wall. Table 3.1 shows the reaction times for the swimming relay teams. Table 3.1 swimmer reaction time/s team A team B 1 0.81 0.75 2 0.48 0.40 3 0.58 0.06 4 0.31 0.35 www.onlineexamhelp.com www.onlineexamhelp.com
  • 7. 7 0610/33/M/J/14© UCLES 2014 [Turn over Compare the reaction time of swimmer 1 in each team with the reaction times of the other swimmers in each team. Use the information in Table 3.1 to support your answer. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[3] (e) Adrenaline is often secreted during sporting competitions. Outline how adrenaline affects the performance of a swimmer. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[3] [Total: 11]
  • 8. 8 0610/33/M/J/14© UCLES 2014 4 (a) Fig. 4.1 shows a section through the anther of a lily flower. The cells in the centre are dividing by meiosis. Fig. 4.1 (i) Name the product of meiosis that is formed in anthers. .......................................................................................................................................[1] (ii) Explain the importance of meiosis in sexual reproduction. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[2]
  • 9. 9 0610/33/M/J/14© UCLES 2014 [Turn over (b) Fig. 4.2 shows a flower of Lilium polyphyllum, a lily that grows in the Himalayan mountains. This species is cross-pollinated by insects. Fig. 4.2 (i) Explain what is meant by cross-pollination. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[2] (ii) Name one feature visible in Fig. 4.2 that helps to attract insects. .......................................................................................................................................[1]
  • 10. 10 0610/33/M/J/14© UCLES 2014 (c) Plants of this species that grow at low altitudes produce flowers 60 days before the plants of the same species that grow at high altitudes. (i) Suggest one environmental reason why lilies that grow at lower altitudes flower earlier than the lilies at higher altitudes. .......................................................................................................................................[1] (ii) Explain why flowering time is an example of continuous variation. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[2] (d) Scientists think that plants of L. polyphyllum growing at high altitudes may evolve into a new species. Explain how natural selection could lead to the evolution of a new species of lily. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[5] [Total: 14]
  • 11. 11 0610/33/M/J/14© UCLES 2014 [Turn over 5 Fig. 5.1 shows a cross-section of a kidney. E F G Fig. 5.1 (a) Name the structures labelled, E, F and G as shown in Fig. 5.1. E ..................................................................................... F ...................................................................................... G ..................................................................................... [3] (b) Explain the function of the renal capsule in the kidney. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[3]
  • 12. 12 0610/33/M/J/14© UCLES 2014 (c) Glucose is reabsorbed, back into the blood, by active transport. Define active transport. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[2] (d) Give one example, other than glucose, of a substance that is reabsorbed into the blood from the renal tubule. ...............................................................................................................................................[1] (e) Dialysis is a treatment for kidney disease. Fig. 5.2 shows a dialysis machine. dialysis machine used dialysis fluid fresh dialysis fluid blood pump arm Fig. 5.2
  • 13. 13 0610/33/M/J/14© UCLES 2014 [Turn over (i) The composition of the dialysis fluid changes as it passes through the dialysis machine. Complete Table 5.1 using the words ‘low’, ‘high’, ‘same’ or ‘none’ to show how the concentration of each substance changes in the dialysis fluid. The last one has been done for you. Table 5.1 concentration of substance in: substance blood before dialysis used dialysis fluid fresh dialysis fluid glucose normal salts high urea high toxins high high low [3] (ii) Explain how a dialysis machine filters blood. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[4] (f) Kidney transplants are the most common organ transplants. Describe the advantages of a kidney transplant compared with dialysis. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[3]
  • 14. 14 0610/33/M/J/14© UCLES 2014 (g) Before a kidney is transplanted, it is important to match the tissue type of the donor with the tissue type of the recipient. State why this is necessary. ................................................................................................................................................... ...............................................................................................................................................[1] [Total: 20] 6 Fig. 6.1 shows the carbon cycle. P, Q, R, S and T each represent a part of the carbon cycle. P R T Q S photosynthesis respiration respiration respiration death carbonisation carbonisation deathfeeding combustion Fig. 6.1 (a) Complete Table 6.1 by identifying P, Q, R and S and the name of one example of a carbon compound found in each. T has been completed for you. Table 6.1 letter part of cycle carbon compound found in each part P Q R S T fossil fuels, e.g. natural gas methane [4]
  • 15. 15 0610/33/M/J/14© UCLES 2014 [Turn over (b) Photosynthesis is a very important process in the carbon cycle. Explain how the process of photosynthesis converts carbon compounds from P to carbon compounds in Q. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[5] (c) The rate of photosynthesis varies as a result of changes in environmental factors. State one environmental factor and explain how it can affect the rate of photosynthesis. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[3]
  • 16. 16 0610/33/M/J/14© UCLES 2014 Copyright Acknowledgements: Question 2 Figure 2.1 © Xue-Yan Liu, Hua-Yun Xiao, Cong-Qiang Liu, Hong-Wei Xiao, Yan-Li Wang; Assessment of atmospheric sulphur with the epilithic moss Haplocladium microphyllum: Evidences from tissue sulphur and d34S analysis. Environmental Pollution; Elsevier; 2009. Question 4 Figure 4.1 © Biodisc; Cross-section of a Lily anther showing the second meiotic division (Lilium), a monocot. LM X65; Visuals Unlimited; 2011. Question 4 Figure 4.2 © Anurag Dhyani; LILIES and Related Plants, 2011-2012. Phenology of Lilium polyphyllum in Garhwal Himalaya, India; RHS Lily Group; 2011. Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. (d) Environmental factors can be controlled in glasshouses. Describe how three environmental factors are controlled in a glasshouse to improve crop yield. factor 1: ..................................................................................................................................... how is it controlled: ................................................................................................................... ................................................................................................................................................... factor 2: ..................................................................................................................................... how is it controlled: ................................................................................................................... ................................................................................................................................................... factor 3: ..................................................................................................................................... how is it controlled: ................................................................................................................... ................................................................................................................................................... [3] [Total: 15]