EFFECT light IN COW BEAN & ARABIDOPSIS

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EFFECT light IN COW BEAN & ARABIDOPSIS

  1. 1. qwertyuiopasdfghjklzxcvbnmqw ertyuiopasdfghjklzxcvbnmqwert yuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbnmqwertyuiopa Abiotic Factors Affect Plants Growth & Development sdfghjklzxcvbnmqwertyuiopasdf [Type the document subtitle] ghjklzxcvbnmqwertyuiopasdfghj Lab3 klzxcvbnmqwertyuiopasdfghjklz 28-3-2012xcvbnmqwertyuiopasdfghjklzxcv bnmqwertyuiopasdfghjklzxcvbn mqwertyuiopasdfghjklzxcvbnmq wertyuiopasdfghjklzxcvbnmqwe rtyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbnmqwertyuiopas dfghjklzxcvbnmqwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbnmrtyuiopasdfghjklzxcvbn mqwertyuiopasdfghjklzxcvbnmq
  2. 2. Abiotic Factors Affect Plants Growth & DevelopmentIntroduction:Thousands of plants which occur in different ecosystem they all share the samerequirements in order to survive, grow. These referred to as abiotic factors. Abioticfactors are essentially non-living components that affect the living organisms .There aresix abiotic factors that affect plant growth: air, water, space, temperature, light and soil(nutrients). These are the basic favorable environmental conditions, its allow them tosuccessfully live and reproduce.LightLight energy is the primary source of energy in nearly all ecosystems.Photosynthesis isthe process by which plants turn sunlight into food. Visible light is of the greatestimportance to plants because it isnecessary for photosynthesis thisprocess is directly dependent on thesupply of water, light, and carbondioxide.From the air with the sun’senergy to create photosynthesis.Oxygen is releases as a byproduct.Photosynthesis ooccurs only in thechloroplasts, tiny sub-cellularstructures contained in the cells ofleaves and green stems.isresponsible for making the leavesand stem green. Limiting any one ofthe factors can limit photosynthesisregardless of the availability of theother factor it will reduction inphotosynthesis and thus a decrease inplant vigor and growth or without theprocess of photosynthesis, plant stops growing.There are Factors such as quality of light; intensity of light and the length of the lightperiod (day length) play an important part in an ecosystem. Increased hours of lightingallow the plant to make sufficient food to grow. However, plants require some period ofdarkness to develop properly and thus should be haves certain hours. Excessive light is asharmful as too little or no light. When a plant gets too much direct light, the leavesbecome pale, sometimes, turn brown, and die. Page 1
  3. 3. Abiotic Factors Affect Plants Growth & DevelopmentMATERIALS 6 Potting soil gloves cow bean labels Beaker marker ruler growth chamberProcedure:  Fill the pots with soil and chose type of seed (broad bean/cow bean/sun flower) for each students.  Plant the 5 seeds in each 3 pots deep them 1 cm inside and cover them with soil.  Place pots inside growth chamber to provide keep the soil moist by watering it every day (be careful not to use too much water).  Observations seeds germinate and seedlings.Abiotic factor:Procedure:  Choose an abiotic factor to test on the growth of plants.  Determine a way to vary the factor you have chosen.  Be sure to include at least three different settings of variable and to keep other factors constant. Have one plant be a "control" to compare.  Obtain 3 pots after seeds have been gown. Label one cup "C=Control" and the remaining two "A," "B".  List the abiotic factor that is different in each cup (light/dark/control)– (water/water definite)-(temperature/low temperature).Remember what each cup contains.  Each day make an observation of your plants. Mention whether the height of plant (incm), branch, color, and number of leaves present.  Be sure to keep plants watered with exact amount if needed.List the Difference in each Cup:A: Abiotic Factor (light/water/temperature) B: limited abiotic factor C: ControlObservations: Write the Date in each Box labeled “Day”. Page 2
  4. 4. Abiotic Factors Affect Plants Growth & DevelopmentLight EXPERIMENT:Materials 3 identical plants (bought from grown cow bean seeds) it is fine if they have just emerged from the soil. measuring cup or water squirt bottle water dark room or box with a lid rulerMethod  Label the 3 plants. The labels will read, A=full Light=Dark (No Light), Control .Water all plants every day or second day with the same amount of water.  Place the No Light plant in a dark room or closed large box.  Keep the Full Light plant in growth chamber for the whole length of the experiment.  Write about any changes in the plants, take pictures. Carefully, measure the height of the plant and describe the number of leaves.  Keep the No Light plant in the dark while watering, measuring and photographing.  Independent Variable: This is the item or thing that is changed by the person doing the test( light)  Dependent Variable:This is the “thing” item or outcome that the person is measuring or observing. Dependent variables are changes that occur due to the independent variable being introduced into the experiment. Plant height, leaves number, branch number.  Control Variables:A controlled variable is all other things that are kept constant so that they do not have an affect or influence on the dependent variable. Same type plants, fertilizer, soil, water, potting soil, Page 3
  5. 5. Abiotic Factors Affect Plants Growth & Development LIGHTResult: 29-3- 2012(A) plant that expose to more light, quick changes in their development occurs in their leaves which there color becomeslightly green and stems are elongate, then the (C) control & (B).(B) Plants in dark are the lowest development compare to (A) & (C), few leaves are slightly wilted (C) Control plants are developing normally that mean leaves & stems have been changes in color and length but not clear. 1-4- 2012 (A) Theres no changes in Leaves number, stem branch and only increase on length, then the (C) control & (B). (B) Plants in dark, are the still rate of their development compare to (A) & (C)slow ,but there stem length, branch and leaves number are increase but not too much only in 1 plant (C) Control plants are developing at normal rate that leave number, stem branch & length increase more than (B) but less (A). Page 4
  6. 6. Abiotic Factors Affect Plants Growth & Development 3-4- 2012(A)stem branch are the (B) few leaf and branch (C) new plant aresame but it lenght were fall dowan and produced,so the moreincrease but regular the same time lenght leaf number and stemand 1 leaf are fall and of other stem contiue branch and lenghtsame time become to increase notes that increase here.more yellloiwsh but so leaf and stem becomeslightly but less than yellowish green andplant in darke but more the same time thiers athan (C). hole in leaves . Page 5
  7. 7. Abiotic Factors Affect Plants Growth & Development 5-4- 2012 (A) still slightly color (B) the leaf and stem (C)theres other newchange on leaves but become more plant grow and leaveshere the stem color yellowish.leaves hanve countinue to change instart to change in color been twested and stem color but in less thanto slightly yellow too,at start to laying.the new (A)the same time some leaves form.leaves have been falland grow new. Page 6
  8. 8. Abiotic Factors Affect Plants Growth & Development(A) srem and leaves (B)most stem &leaves (C)leaves, stemscontinue to grow and are dead,fall dawn only continue to grow andbecmoe more yellowish 3 leaves however they new leaves& stem aregreen. there new welts . produces.branch and leaves growwhile the light increaseand the days 8-4- 2012 (A)leaves,stem & (B)all plant are its countinue to branch are dead growcountinue increase leaves,ste,branch.an and change in d the leaves are still lighter color. but healty. note the leaves start to fold. 10-4- 2012 Page 7
  9. 9. Abiotic Factors Affect Plants Growth & Development Total Average of Abiotic factor : light light dark control thur sun tue thur sun tuelightdarkcontrol Total branch of Abiotic factor light total branch thur sun tue thur sun tue light dark control Page 8
  10. 10. Abiotic Factors Affect Plants Growth & Development Total of stem lenght Abiotic Factor Lightstem lenght thur sun tue thur sun tue Light Dark Control Total of Leaves Abiotic Factor Lighttotal og leaves thur sun tue thur sun tue Light Dark Cotrol Page 9
  11. 11. Abiotic Factors Affect Plants Growth & Development Result: LIGHT Result: Light Dark 8-4- 2012 Control(A)Plant that expose to more light, still in develop and grow stages.(B) Plants in dark leaves, start to welt and have turn to yellow (C) Control plants are developing normally leaves & stems have are healthy and in good condition. Page 10
  12. 12. Abiotic Factors Affect Plants Growth & Development Light 10-4- Dark 2012 ControlIn lightand in control leaves start to increase but plant leaves that receive more light are more than controls.In dark, plants aredead Page 11
  13. 13. Abiotic Factors Affect Plants Growth & Development Light 15-4- Dark 2012 ControlIn light, leaves increase in number and slight change in leaf color from green to slight greenIn control, leaves increase and much bigger than light leaves and look so healthy.Stem, in both plant in expose much of light and control are start to grow but plant in light are stem length muchlonger.In Dark, plant are dead nothing appears. Page 12
  14. 14. Abiotic Factors Affect Plants Growth & Development 17-4- 2012 (A) still slightly color (B) the leaf and stem (C)theres other newchange on leaves but become more plant grow and leaveshere the stem color yellowish.leaves hanve countinue to change instart to change in color been twested and stem color but in less thanto slightly yellow too,at start to laying.the new (A)the same time some leaves form.leaves have been falland grow new. Page 13
  15. 15. Abiotic Factors Affect Plants Growth & Development(A) srem and leaves (B)most stem &leaves (C)leaves, stemscontinue to grow and are dead,fall dawn only continue to grow andbecmoe more yellowish 3 leaves however they new leaves& stem aregreen. there new welts . produces.branch and leaves growwhile the light increaseand the days 22-4- 2012 (A)leaves,stem & (B)all plant are its countinue to branch are dead growcountinue increase leaves,ste,branch.an and change in d the leaves are still lighter color. but healty. note the leaves start to fold. 24-4- 2012 Page 14
  16. 16. Abiotic Factors Affect Plants Growth & Development Arabidopsis A= Abiotic factor B= Control C= length of stem D= number of branch A= Light B= ControlDate/Day #NO. Leaves C D Average NO. leaves C D Average8-4-2012 1 6 - 1 8 - 2 7 - 2 8 - 3 6 - 3 9 - 4 9 - 4 9 - 5 10 - 5 8 - Total 38 4210-4-2012 1 6 - 1 10 - 2 9 - 2 10 - 3 10 - 3 11 - 4 22 - 4 11 - 5 11 - 5 9 - Total 58 5115-4-2012 1 8 - 1 10 - 2 13 - 2 14 - 3 18 - 3 25 2 1 4 15 - 4 16 - 5 18 1.4 1 5 15 - Total 72 1.4 1 51.4 80 2 1 4017-4-2012 1 10 - 1 16 - 2 14 - 2 16 - 3 19 - 3 29 5.5 5 4 16 - 1 4 16 - 5 23 4.9 4 5 21 - Total 82 4.9 5 16.7 101 5.5 5 18.319-4-2012 1 11 - 1 21 1.1 1 2 14 1.9 1 2 21 1.5 1 3 19 - - 3 32 10.5 11 4 19 2.5 1 4 23 - 1 5 28 9.5 6 5 23 - - Total 91 13.9 8 6.5 120 13.1 14 9.1 Page 15
  17. 17. Abiotic Factors Affect Plants Growth & DevelopmentDay/Date B A=Light C D Average B A=Control C D Average22-4-2012 1 12 - 1 22 7.4 5 2 16 3.4 2 2 22 7.8 5 3 20 - 3 36 16.5 14 4 19 8.7 5 4 25 5.5 4 5 32 16.2 10 5 24 2.1 1 Total 99 28.3 17 3.4 129 39.3 29 3.224-4-2012 1 13 - 1 30 14.2 8 2 17 7.9 4 2 25 13.8 12 3 21 0.9 3 38 21.7 15 4 21 13.8 7 4 26 14.3 5 5 35 1=21.6 12 5 26 7 4 2=3.5 1 Total 107 47.7 24 2.2 145 71 44 2.04 Page 16
  18. 18. Abiotic Factors Affect Plants Growth & Development Total Average of lightDays light control Total branch days light control Page 17
  19. 19. Abiotic Factors Affect Plants Growth & Development Tota of stem lenght Days light Total leaveslight Page 18
  20. 20. Abiotic Factors Affect Plants Growth & DevelopmentSummary results:ControlNotes Even though the plants growing in thecontrol place are not as tall asother plants grow, the control looks the healthiest with nice full growth(regular ways) and dark green leaves and stem.LightPlants that receive a large amount of lightthey really grow and develop infaster rate.However plant that expose to light they are the first how loss thereleaves maybe to adapttheir self but after that they continue grow. Characteristic Getting leaves become bigger, stem becomeTaller than others and there color change from green to slightly green to yellowish green each day.DarkNotes at begin its continue grow, length of not receiving light in many days incertain point leaves start change their color to dry out and losing its organs. However that ware in dark each day leaves, stem. Branch number is reduced until fall down. Characteristic Stem and leaves start to grow, change in color to yellow fast than control and unstable growth of leaves and branch by try to survive. In certain point, in leaves occur scar or holes and number branch reduced. Ones leaves, stem dry out, plant lose their organs and die Page 19
  21. 21. Abiotic Factors Affect Plants Growth & DevelopmentDISCUSSION:The photosynthetic process occurs most readily when the light to makes food for itself togrow. Inleaves, Chlorophyllthat contains chloroplasts to absorb light. Without light, plantgrowing in the dark uses their food reserves. Once the reserves have been used the plantwill die. Alsothe stem of the plant rapidly elongates to increase the probability of theplant finding light by using its food reserves, so when plant does not find light has usedthese reserves, it will die.Leaf ColorThe color plants leaves are closely related to how much light it gets. Generally, plantsthat require a great deal of sunlight tend to have leaves that are rich and dark in color,while the leaves of plants grown in dark and too much light conditions are often lighteryellowish greenStem Length and BranchThe amount of light a plant receives has a large impact on the length of its stems. Plantsthat receive a great deal of light tend to be spindly and long in length, while those grownin low-light or no light conditions are usually shorter. However, dark they become lessbranch because there no light to get there energy that process photosynthesis and developnew tissue to build up organsComment:The temperature of growth chamber were too height 26c.Plant cover dark box must put in in dark room.Plant in dark, in and out of growth chamber cause them to stress that will affect theregrowth. Page 20

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