factors affecting rate of Photosynthesis
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In experiments using eg Canadian pondweed, you can immerse the green weed in sodium hydrogencarbonate solution to supply the carbon dioxide (one variable) needed for photosynthesis. The other two photosynthesis rate variables are temperature and light intensity.
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Translocation of food in plants
Organic nutrients are transported throughout plants via the phloem. Sugars and other organic materials move from sources, like mature leaves, to sinks, such as roots and developing organs, through sieve elements in the phloem. This process, called translocation, occurs via pressure flow. Sugars are actively loaded into the phloem in source tissues, increasing pressure. This causes flow to lower pressure sink tissues, where sugars are unloaded. Mainly sucrose is translocated, along with other materials, in a rapid flow driven by solute concentration gradients between sources and sinks.
8.2 photosynthesis
Photosynthesis uses light energy to produce glucose from carbon dioxide and water. It consists of light-dependent and light-independent reactions. The light-dependent reactions use chlorophyll to absorb light and generate ATP and NADPH through electron transport. The light-independent reactions use ATP and NADPH to fix carbon and produce glucose. Limiting factors like light intensity, temperature, and carbon dioxide concentration can affect the rate of photosynthesis.
Factors affecting photosynthesis
This document discusses various factors that affect the process of photosynthesis. It identifies external factors like carbon dioxide, light, temperature, water, and DCMU, as well as internal factors like the chlorophyll content of leaves. It explains that according to Blackman's law of limiting factors, the rate of a process is determined by the factor that is closest to its minimum value, and provides examples of how temperature and other conditions can limit photosynthesis. Key factors discussed in more depth include temperature, carbon dioxide, light, oxygen, and water.
Stress and osmoregulation in plants
Visit https://www.slideshare.net/alihaider408/stress-and-osmoregulation-in-plantsedited for new edited version of the slide.
Osmoregulation is the passive regulation of the osmotic pressure of an organism's body fluids, detected by osmoreceptors, to maintain the homeostasis of the organism's water content; that is, it maintains the fluid balance and the concentration of electrolytes (salts in solution) to keep the fluids from becoming too diluted or concentrated.
The immediate and most common response by the different organs of a plant to water stress is decrease in turgor. This may be partially or fully adjusted by accumulation of solutes.
Absorption of water
It includes Theories of absorption of water, different types of radial water movement in roots, factors affecting absorption of wtaer.
Plant Physiology-Water relations
This document provides information about plant water relations and the absorption of water by plant roots. It discusses that water is essential for plant life and is absorbed by root hairs from the soil. Root hairs enter the spaces between soil particles and absorb water through a process of osmosis, facilitated by their selectively permeable cell membranes. Water then moves through the plant, powering processes like photosynthesis and supporting plant structure through turgor pressure in cells.
Translocation in Phloem.pptx
Food is synthesized in the green parts of a plant. The non-green parts are depended on the photosynthetic cells for nourishment. The main function of photosynthesis is to provide energy and carbon skeleton to all living cells in different regions of organs of plant body. The food in the form of sucrose is transported by the vascular tissue phloem. The transport of photosynthetic organic substance from leaf to any organ at relatively long distance is called translocation. Such translocation of organic substances occurs through a vascular tissue called phloem. The translocation of organic substances through phloem tissue is called phloem transport.
Introduction to principles of plant physiology
Plant physiology is the study of how plants function at the cellular and biochemical levels and respond to their environment. It examines plant metabolism, growth, transport, water relations, and responses to stresses and environmental factors. Plant physiology relies on biology, chemistry, and physics and serves as the foundation for advances in agriculture, forestry, pharmacology, and other fields. Understanding plant physiology allows for improvements like increasing photosynthetic efficiency, producing disease-resistant crops through tissue culture, and optimizing plant nutrition and growth through techniques like pruning, irrigation, and growth regulators.
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Translocation of food in plants
Organic nutrients are transported throughout plants via the phloem. Sugars and other organic materials move from sources, like mature leaves, to sinks, such as roots and developing organs, through sieve elements in the phloem. This process, called translocation, occurs via pressure flow. Sugars are actively loaded into the phloem in source tissues, increasing pressure. This causes flow to lower pressure sink tissues, where sugars are unloaded. Mainly sucrose is translocated, along with other materials, in a rapid flow driven by solute concentration gradients between sources and sinks.
8.2 photosynthesis
Photosynthesis uses light energy to produce glucose from carbon dioxide and water. It consists of light-dependent and light-independent reactions. The light-dependent reactions use chlorophyll to absorb light and generate ATP and NADPH through electron transport. The light-independent reactions use ATP and NADPH to fix carbon and produce glucose. Limiting factors like light intensity, temperature, and carbon dioxide concentration can affect the rate of photosynthesis.
Factors affecting photosynthesis
This document discusses various factors that affect the process of photosynthesis. It identifies external factors like carbon dioxide, light, temperature, water, and DCMU, as well as internal factors like the chlorophyll content of leaves. It explains that according to Blackman's law of limiting factors, the rate of a process is determined by the factor that is closest to its minimum value, and provides examples of how temperature and other conditions can limit photosynthesis. Key factors discussed in more depth include temperature, carbon dioxide, light, oxygen, and water.
Stress and osmoregulation in plants
Visit https://www.slideshare.net/alihaider408/stress-and-osmoregulation-in-plantsedited for new edited version of the slide.
Osmoregulation is the passive regulation of the osmotic pressure of an organism's body fluids, detected by osmoreceptors, to maintain the homeostasis of the organism's water content; that is, it maintains the fluid balance and the concentration of electrolytes (salts in solution) to keep the fluids from becoming too diluted or concentrated.
The immediate and most common response by the different organs of a plant to water stress is decrease in turgor. This may be partially or fully adjusted by accumulation of solutes.
Absorption of water
It includes Theories of absorption of water, different types of radial water movement in roots, factors affecting absorption of wtaer.
Plant Physiology-Water relations
This document provides information about plant water relations and the absorption of water by plant roots. It discusses that water is essential for plant life and is absorbed by root hairs from the soil. Root hairs enter the spaces between soil particles and absorb water through a process of osmosis, facilitated by their selectively permeable cell membranes. Water then moves through the plant, powering processes like photosynthesis and supporting plant structure through turgor pressure in cells.
Translocation in Phloem.pptx
Food is synthesized in the green parts of a plant. The non-green parts are depended on the photosynthetic cells for nourishment. The main function of photosynthesis is to provide energy and carbon skeleton to all living cells in different regions of organs of plant body. The food in the form of sucrose is transported by the vascular tissue phloem. The transport of photosynthetic organic substance from leaf to any organ at relatively long distance is called translocation. Such translocation of organic substances occurs through a vascular tissue called phloem. The translocation of organic substances through phloem tissue is called phloem transport.
Introduction to principles of plant physiology
Plant physiology is the study of how plants function at the cellular and biochemical levels and respond to their environment. It examines plant metabolism, growth, transport, water relations, and responses to stresses and environmental factors. Plant physiology relies on biology, chemistry, and physics and serves as the foundation for advances in agriculture, forestry, pharmacology, and other fields. Understanding plant physiology allows for improvements like increasing photosynthetic efficiency, producing disease-resistant crops through tissue culture, and optimizing plant nutrition and growth through techniques like pruning, irrigation, and growth regulators.
Plant responses
Plants respond to changes in their environment through processes like phototropism, geotropism, and hydrotropism. Phototropism is the response to light, where shoots grow upwards towards light. Geotropism is the response to gravity, where roots grow downwards towards the earth. Hydrotropism is the response to moisture. Plant hormones like auxin are involved in these responses and allow plants to orient themselves. Commercial growers utilize hormones to stimulate root growth in cuttings, slow fruit ripening for transport, and create weedkillers that disrupt plant growth.
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Photosynthesis is a process used by plants and other organisms to convert light energy, normally from the sun, into chemical energy that can be used to fuel the organisms' activities. Carbohydrates, such as sugars, are synthesized from carbon dioxide and water.
A level biology photosynthesis
Photosynthesis is the process by which plants use energy from sunlight to produce food from carbon dioxide and water. It occurs in two main stages:
1. Light-dependent reactions trap light energy from the sun using chlorophyll and use it to split water molecules and produce ATP and NADPH. This takes place in the thylakoid membranes inside chloroplasts.
2. Light-independent reactions use the ATP and NADPH to fix carbon from carbon dioxide into organic carbohydrates like glucose. This occurs in the chloroplast stroma and is known as the Calvin cycle. The overall equation is 6CO2 + 6H2O → C6H12O6 + 6O2.
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Photosynthesis is the process by which plants, algae, and cyanobacteria convert carbon dioxide and water into oxygen and energy-rich organic compounds like glucose. It occurs in two stages: in the light-dependent reactions, chloroplasts use energy from sunlight to convert water to oxygen and produce ATP and NADPH; in the light-independent reactions of the Calvin cycle, the ATP and NADPH fuel the conversion of carbon dioxide into carbohydrates like glucose using the enzyme RuBisCO. Photosynthesis is essential for life on Earth as it produces oxygen and supplies organic compounds and energy.
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The document summarizes photosynthesis, including:
1) Photosynthesis uses light energy, water, carbon dioxide to produce glucose and oxygen through two phases - the light reactions and dark reactions.
2) The light reactions use light to produce ATP and NADPH using chlorophyll and a series of electron carriers in the thylakoid membranes.
3) The dark reactions use ATP and NADPH to fix carbon from carbon dioxide into glucose through the Calvin cycle in the chloroplast stroma.
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This document contains a lecture on oxidation-reduction (redox) reactions in living organisms. It discusses how:
1. Redox reactions involve the transfer of electrons, with oxidation being the loss of electrons and reduction being the gain of electrons.
2. Important redox reactions in biological processes are photosynthesis and cellular respiration. Photosynthesis converts sunlight into chemical energy by using a redox reaction, while cellular respiration releases energy through a combustion reaction.
3. ATP generation during cellular respiration occurs through substrate-level phosphorylation and oxidative phosphorylation. Oxidative phosphorylation uses an electron transport chain to produce ATP indirectly as electrons from glucose are transferred to lower energy states.
Transport of water\ water transport in plants
Water is absorbed by the root hair cell by the process called, Osmosis.
Root hairs are made up of epidermal cells, which are present on the surface of the root.
they also increase the surface area for absorption
SYMPLAST PATHWAY:
In this pathway, water and minerals move from the cytoplasm of one cell in to the next, via plasmodesmata eventually reaching the xylem.
APOPLAST PATHWAY:
In this pathway, water and dissolved minerals travel through the cell walls that surround plant cells.
Factors affecting photosynthesis
The rate of photosynthesis is affected by light intensity, temperature, water availability, and carbon dioxide concentration. The rate increases with higher light intensity up to the saturation point, increases with temperature up to the optimal temperature for enzymes, and increases with more carbon dioxide available for the reactions. Lack of sufficient water causes stomata to close, limiting carbon dioxide intake and slowing photosynthesis.
9.2 transport in the phloem of plants
1. Plants transport organic compounds like sucrose from sources of production, like leaves, to sinks of storage or use, like roots and fruits.
2. Sucrose is actively loaded into phloem sieve tubes in the leaves through the use of ATP. This increases the solute concentration in the phloem.
3. Water then enters the phloem by osmosis from the xylem, raising the hydrostatic pressure. This pressure drives the bulk flow of phloem sap toward areas of lower pressure and concentration in the sinks.
C4 cycle..
here is the only ppt available of C4 cycle hope you will like it
do comment if you like it and share it
Factors affecting photosynthesis
Photosynthesis is the process by which plants, algae, and some bacteria use sunlight, water and carbon dioxide to produce oxygen and energy in the form of glucose. The rate of photosynthesis is affected by both external factors such as light, temperature, water, carbon dioxide and oxygen levels, as well as internal factors including chlorophyll content, the protoplasmic system, leaf anatomy, accumulation of end products, and chloroplast microstructure. External factors influence the availability of necessary inputs like light and carbon dioxide, while internal factors impact the plant's ability to utilize those inputs for photosynthesis. Careful control of both external and internal environmental conditions can optimize the photosynthetic rate in plants.
Translocation of Solutes and Mass flow hypothesis
This document discusses long-distance transport in plants through the xylem and phloem. It defines key terms like source, sink, and the different types of translocation. It explains that phloem transport involves the movement of organic compounds from leaves to other plant parts, while xylem transport moves water and minerals from roots to leaves. The document also summarizes several theories on the mechanism of translocation, including diffusion hypotheses and Munch's mass flow hypothesis. It provides details on Munch's hypothesis and discusses some objections to it.
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Photosynthesis is the process by which plants, algae, and cyanobacteria use sunlight, water and carbon dioxide to produce oxygen and energy in the form of ATP and NADPH. It occurs in two phases: the light-dependent reactions and the light-independent reactions. The light reactions capture energy from sunlight and use it to make ATP and NADPH. The Calvin cycle uses these products to incorporate carbon from carbon dioxide into organic compounds to fuel the plant. Some plants use alternative pathways like C4 or CAM photosynthesis that help reduce photorespiration and increase water use efficiency.
pholoem loading.ppt
This document discusses phloem transport in plants. It explains that phloem transports photosynthates like sugars and other organic compounds from source to sink tissues. The main sugar transported is sucrose, which is non-reducing. Phloem contains specialized living cells called sieve elements and companion cells that form continuous tubes for transport. Sugars are loaded into and unloaded out of these cells via pressure flow. In sources, sugar loading creates pressure that drives bulk flow through the phloem to sinks where sugars are unloaded, reducing pressure.
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The document discusses the role of water in plant distribution. It begins by classifying plants based on their water relationships into four groups: mesophytes, hydrophytes, halophytes, and xerophytes. It then explains how plant distributions are determined by biotic and abiotic factors like temperature, moisture, soil and interactions with other species. The distribution of plants follows general patterns along gradients of increasing or decreasing moisture and temperature. Water availability is a major determinant of the geographical ranges and ecological niches that different plant species occupy.
Mechanism of stomatal regulation
Stomata are tiny pores on plant leaves that open and close to regulate gas exchange. They are bordered by a pair of guard cells that swell and contract to control the opening width. During the day, photosynthesis in guard cells produces sugar, increasing their turgor pressure and causing stomata to open. At night, the lack of photosynthesis allows starch to accumulate, decreasing turgor pressure and prompting stomatal closure. Potassium ion transport is also important - influx of K+ into guard cells during the day increases their solute content and turgor, while efflux at night decreases turgor. Together, these mechanisms allow plants to control gas exchange through stomatal openings in response to light
Trasport in plants ppt
Plants need transport systems to move water, minerals, and food throughout their bodies. Water and minerals are transported from the roots to the leaves through xylem vessels. Energy from photosynthesis in the leaves is transported throughout the plant as food through phloem sieve tubes. Transpiration pull and root pressure work together to drive the upward movement of water through the xylem. Translocation of food through the phloem utilizes energy to actively transport sugars and other materials both upward and downward according to the plant's needs.
FACTORS AFFECTING THE RATE OF PHOTOSYNTHESIS
The three main external factors that affect the rate of photosynthesis are light, temperature, and carbon dioxide concentration. The rate increases with brighter light and higher temperatures up to a point. More carbon dioxide also increases the rate up to the saturation point. These three factors are considered limiting factors, meaning the rate is limited by whichever factor is least favorable. Internal factors like chlorophyll levels and enzyme activity also influence the rate. C3 and C4 plants differ in their responses to light, temperature, and carbon dioxide levels, with C4 plants having an advantage in higher temperatures but C3 plants benefiting more from increased carbon dioxide.
Factors Affecting Photosynthesis
The document discusses factors that affect the rate of photosynthesis in plants, including light intensity, carbon dioxide levels, and temperature. It states that initially increasing levels of these factors increases the photosynthesis rate, but the rate levels off at their maximum. Temperature peaks and then the rate decreases if it is too high. The role of the enzyme rubisco is also discussed, which incorporates carbon dioxide but can also incorporate oxygen if levels are high.
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Plants respond to changes in their environment through processes like phototropism, geotropism, and hydrotropism. Phototropism is the response to light, where shoots grow upwards towards light. Geotropism is the response to gravity, where roots grow downwards towards the earth. Hydrotropism is the response to moisture. Plant hormones like auxin are involved in these responses and allow plants to orient themselves. Commercial growers utilize hormones to stimulate root growth in cuttings, slow fruit ripening for transport, and create weedkillers that disrupt plant growth.
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Photosynthesis is a process used by plants and other organisms to convert light energy, normally from the sun, into chemical energy that can be used to fuel the organisms' activities. Carbohydrates, such as sugars, are synthesized from carbon dioxide and water.
A level biology photosynthesis
Photosynthesis is the process by which plants use energy from sunlight to produce food from carbon dioxide and water. It occurs in two main stages:
1. Light-dependent reactions trap light energy from the sun using chlorophyll and use it to split water molecules and produce ATP and NADPH. This takes place in the thylakoid membranes inside chloroplasts.
2. Light-independent reactions use the ATP and NADPH to fix carbon from carbon dioxide into organic carbohydrates like glucose. This occurs in the chloroplast stroma and is known as the Calvin cycle. The overall equation is 6CO2 + 6H2O → C6H12O6 + 6O2.
Photosynthesis
Photosynthesis is the process by which plants, algae, and cyanobacteria convert carbon dioxide and water into oxygen and energy-rich organic compounds like glucose. It occurs in two stages: in the light-dependent reactions, chloroplasts use energy from sunlight to convert water to oxygen and produce ATP and NADPH; in the light-independent reactions of the Calvin cycle, the ATP and NADPH fuel the conversion of carbon dioxide into carbohydrates like glucose using the enzyme RuBisCO. Photosynthesis is essential for life on Earth as it produces oxygen and supplies organic compounds and energy.
Photosynthesis
The document summarizes photosynthesis, including:
1) Photosynthesis uses light energy, water, carbon dioxide to produce glucose and oxygen through two phases - the light reactions and dark reactions.
2) The light reactions use light to produce ATP and NADPH using chlorophyll and a series of electron carriers in the thylakoid membranes.
3) The dark reactions use ATP and NADPH to fix carbon from carbon dioxide into glucose through the Calvin cycle in the chloroplast stroma.
Oxidation reduction reaction in living organisms
This document contains a lecture on oxidation-reduction (redox) reactions in living organisms. It discusses how:
1. Redox reactions involve the transfer of electrons, with oxidation being the loss of electrons and reduction being the gain of electrons.
2. Important redox reactions in biological processes are photosynthesis and cellular respiration. Photosynthesis converts sunlight into chemical energy by using a redox reaction, while cellular respiration releases energy through a combustion reaction.
3. ATP generation during cellular respiration occurs through substrate-level phosphorylation and oxidative phosphorylation. Oxidative phosphorylation uses an electron transport chain to produce ATP indirectly as electrons from glucose are transferred to lower energy states.
Transport of water\ water transport in plants
Water is absorbed by the root hair cell by the process called, Osmosis.
Root hairs are made up of epidermal cells, which are present on the surface of the root.
they also increase the surface area for absorption
SYMPLAST PATHWAY:
In this pathway, water and minerals move from the cytoplasm of one cell in to the next, via plasmodesmata eventually reaching the xylem.
APOPLAST PATHWAY:
In this pathway, water and dissolved minerals travel through the cell walls that surround plant cells.
Factors affecting photosynthesis
The rate of photosynthesis is affected by light intensity, temperature, water availability, and carbon dioxide concentration. The rate increases with higher light intensity up to the saturation point, increases with temperature up to the optimal temperature for enzymes, and increases with more carbon dioxide available for the reactions. Lack of sufficient water causes stomata to close, limiting carbon dioxide intake and slowing photosynthesis.
9.2 transport in the phloem of plants
1. Plants transport organic compounds like sucrose from sources of production, like leaves, to sinks of storage or use, like roots and fruits.
2. Sucrose is actively loaded into phloem sieve tubes in the leaves through the use of ATP. This increases the solute concentration in the phloem.
3. Water then enters the phloem by osmosis from the xylem, raising the hydrostatic pressure. This pressure drives the bulk flow of phloem sap toward areas of lower pressure and concentration in the sinks.
C4 cycle..
here is the only ppt available of C4 cycle hope you will like it
do comment if you like it and share it
Factors affecting photosynthesis
Photosynthesis is the process by which plants, algae, and some bacteria use sunlight, water and carbon dioxide to produce oxygen and energy in the form of glucose. The rate of photosynthesis is affected by both external factors such as light, temperature, water, carbon dioxide and oxygen levels, as well as internal factors including chlorophyll content, the protoplasmic system, leaf anatomy, accumulation of end products, and chloroplast microstructure. External factors influence the availability of necessary inputs like light and carbon dioxide, while internal factors impact the plant's ability to utilize those inputs for photosynthesis. Careful control of both external and internal environmental conditions can optimize the photosynthetic rate in plants.
Translocation of Solutes and Mass flow hypothesis
This document discusses long-distance transport in plants through the xylem and phloem. It defines key terms like source, sink, and the different types of translocation. It explains that phloem transport involves the movement of organic compounds from leaves to other plant parts, while xylem transport moves water and minerals from roots to leaves. The document also summarizes several theories on the mechanism of translocation, including diffusion hypotheses and Munch's mass flow hypothesis. It provides details on Munch's hypothesis and discusses some objections to it.
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This presentation intends to explore the respiration in plants with special reference to energy production and regulation of pathways.
Presentation on stomata
This presentation discusses stomata, the pores in plant leaves. It defines stomata as pores that allow for gas exchange with the atmosphere. Each stoma is surrounded by a pair of guard cells that control opening and closing. The guard cells change turgor pressure in response to various factors like light and carbon dioxide levels to open and close the pore. Key factors that affect stomatal movement, including light, temperature, water, and plant hormones, are also examined.
Photosynthesis
Photosynthesis is the process by which plants, algae, and cyanobacteria use sunlight, water and carbon dioxide to produce oxygen and energy in the form of ATP and NADPH. It occurs in two phases: the light-dependent reactions and the light-independent reactions. The light reactions capture energy from sunlight and use it to make ATP and NADPH. The Calvin cycle uses these products to incorporate carbon from carbon dioxide into organic compounds to fuel the plant. Some plants use alternative pathways like C4 or CAM photosynthesis that help reduce photorespiration and increase water use efficiency.
pholoem loading.ppt
This document discusses phloem transport in plants. It explains that phloem transports photosynthates like sugars and other organic compounds from source to sink tissues. The main sugar transported is sucrose, which is non-reducing. Phloem contains specialized living cells called sieve elements and companion cells that form continuous tubes for transport. Sugars are loaded into and unloaded out of these cells via pressure flow. In sources, sugar loading creates pressure that drives bulk flow through the phloem to sinks where sugars are unloaded, reducing pressure.
Role of water in Distribution of plants
The document discusses the role of water in plant distribution. It begins by classifying plants based on their water relationships into four groups: mesophytes, hydrophytes, halophytes, and xerophytes. It then explains how plant distributions are determined by biotic and abiotic factors like temperature, moisture, soil and interactions with other species. The distribution of plants follows general patterns along gradients of increasing or decreasing moisture and temperature. Water availability is a major determinant of the geographical ranges and ecological niches that different plant species occupy.
Mechanism of stomatal regulation
Stomata are tiny pores on plant leaves that open and close to regulate gas exchange. They are bordered by a pair of guard cells that swell and contract to control the opening width. During the day, photosynthesis in guard cells produces sugar, increasing their turgor pressure and causing stomata to open. At night, the lack of photosynthesis allows starch to accumulate, decreasing turgor pressure and prompting stomatal closure. Potassium ion transport is also important - influx of K+ into guard cells during the day increases their solute content and turgor, while efflux at night decreases turgor. Together, these mechanisms allow plants to control gas exchange through stomatal openings in response to light
Trasport in plants ppt
Plants need transport systems to move water, minerals, and food throughout their bodies. Water and minerals are transported from the roots to the leaves through xylem vessels. Energy from photosynthesis in the leaves is transported throughout the plant as food through phloem sieve tubes. Transpiration pull and root pressure work together to drive the upward movement of water through the xylem. Translocation of food through the phloem utilizes energy to actively transport sugars and other materials both upward and downward according to the plant's needs.
FACTORS AFFECTING THE RATE OF PHOTOSYNTHESIS
The three main external factors that affect the rate of photosynthesis are light, temperature, and carbon dioxide concentration. The rate increases with brighter light and higher temperatures up to a point. More carbon dioxide also increases the rate up to the saturation point. These three factors are considered limiting factors, meaning the rate is limited by whichever factor is least favorable. Internal factors like chlorophyll levels and enzyme activity also influence the rate. C3 and C4 plants differ in their responses to light, temperature, and carbon dioxide levels, with C4 plants having an advantage in higher temperatures but C3 plants benefiting more from increased carbon dioxide.
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AQA Biology B8 [ Answers ]
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Discussion Response 1Kam Ellio One key environmental factor
Discussion Response 1
Kam Ellio
One key environmental factor that affect photosynthesis is carbon dioxide concentration. As photosynthetic organisms, plants take up atmospheric CO2 , chemically reducing the carbon. Plants take in carbon dioxide (CO2 ) and water (H2O) from the air and soil. Carbon dioxide combined with water is one of the reactants of photosynthesis. If concentration of carbon dioxide increases so does photosynthesis. Another factor is temperature. If it gets too cold the rate of photosynthesis will decrease and if its too hot the plants will not photosynthesize.
Photosynthesis can also be affected by changes in pH within the leaves. pH is the measure of the acidity of a solution, and it can have a large effect on many biological processes. Changes in pH affect all biological processes through enzymes. Enzymes are “workers” inside cells that are disabled by extremes in pH. RuBisCO is the main carbon-fixing enzyme and it functions at a pH of 8. Raising or lowering the pH from 8 will negatively impact the rate of photosynthesis because RuBisCO will begin to work more slowly. When the pH reaches 6 or 10 it will stop working altogether.
Response 1…
Discussion Response 2,
Britt Gar
After conducting my web search on information for what environmental factors can affect cellular respiration and photosynthesis, I found at least three factors that could drastically change the rates of these processes. The first factor is temperature, it is a great component that can speed up these processes if increased, and slow it down when decreased. The second factor is availability of resources in the area. An example of the resources being water, oxygen, carbon dioxide, and sunlight. The third factor is agricultural activities in that area. For example, The plants carrying out these processes where there is fertilizer present in the area can be affected by the added nutrients (which can include nitrogen and phosphorous). The conclusion of my study for this article is that these three factors can either speed up or slow down the rate of the processes due to the environmental conditions of where it is being carried out.
Reference:
Respiration. Understanding Global Change. Retrieved October 5, 2022, from
Response 2…
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WHAT IS THERMAL POLLUTION
EXPLANATION IN DETAIL
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MOST EXPOSED TO THERMAL POLLUTION
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factors affecting rate of Photosynthesis
- 1. N A M E - K A P I L S H A R M A A D M N O . - 1 9 S B A S 2 0 8 0 1 1 Experiments on factors affecting rate of Photosynthesis
- 2. Rate of photosynthesis Describe how much sugar a plant can produce over time. • It describes how productive a plant is under various conditions.
- 3. Light Intensity High intensity light causes the rate of photosynthesis to increase. The rate will increase until it reaches its saturation point. At the saturation point,the rate of photosynthesis remains constant .
- 4. Photosynthesis Light Response Curve
- 5. Temperature As the temperature increases ,so does the rate of photosynthesis. Enzymes function at an optimal temperature. If the temperature is too high or too low,then the enzymes will not function properly. The rate of photosynthesis will slow down or stop,entirely.
- 6. Effect of Temperature On Photosynthesis
- 7. Water Water is one of the raw materials of photosynthesis. A shortage of water can slow or even stop photosynthesis. Water stress causes stomata to close,preventing CO2 from entering the leaf .
- 9. Corbon Dioxide (CO2) Concentration An increase in CO2 concentration causes the rate of photosynthesis to increase. More CO2 available means more sugar being made in the light independent reaction.
- 11. THANKS FOR READING THANK YOU…