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How does most carbon dioxide reach into the photosynthesizing cells of a green leaf?
- a)Through the hypodermis of the leaf.
- b)Diffusion through the stomata of the leaf.
- c)Movement through the phloem.
- d)Movement through the xylem.
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
How does most carbon dioxide reach into the photosynthesizing cells of...
Most CO2 reach the photosynthesising cells of green leaves through diffusion. Stomata (tiny pores) present of leaf surface and stem facilitates gaseous exchange between the plant cells and the surrounding. CO2 move into the cells through these small pores.
Most Upvoted Answer
How does most carbon dioxide reach into the photosynthesizing cells of...
Photosynthesis in green plants requires carbon dioxide (CO2), which is obtained from the atmosphere. The process by which most CO2 reaches the photosynthesizing cells of a green leaf is through the stomata, which are tiny pores on the surface of leaves.
Diffusion through the stomata of the leaf
The exchange of gases, including CO2 and oxygen, between the plant and the atmosphere occurs through the stomata. When the guard cells that surround the stomata are open, CO2 diffuses into the leaf and oxygen diffuses out. This process is driven by the difference in concentration of CO2 between the atmosphere and the intercellular spaces inside the leaf.
Factors affecting the rate of diffusion
Several factors can affect the rate of diffusion of CO2 through the stomata, including:
- Light intensity: Higher light intensity increases the rate of photosynthesis, which in turn increases the demand for CO2 and leads to a faster diffusion rate.
- Humidity: High humidity reduces the rate of diffusion because water molecules compete with CO2 molecules for space in the intercellular spaces.
- Temperature: Higher temperatures increase the rate of diffusion because CO2 molecules move faster at higher temperatures.
Conclusion
In summary, the movement of CO2 into the photosynthesizing cells of a green leaf occurs primarily through the stomata. This process is driven by the difference in concentration of CO2 between the atmosphere and the intercellular spaces inside the leaf. Factors such as light intensity, humidity, and temperature can affect the rate of diffusion through the stomata.
Diffusion through the stomata of the leaf
The exchange of gases, including CO2 and oxygen, between the plant and the atmosphere occurs through the stomata. When the guard cells that surround the stomata are open, CO2 diffuses into the leaf and oxygen diffuses out. This process is driven by the difference in concentration of CO2 between the atmosphere and the intercellular spaces inside the leaf.
Factors affecting the rate of diffusion
Several factors can affect the rate of diffusion of CO2 through the stomata, including:
- Light intensity: Higher light intensity increases the rate of photosynthesis, which in turn increases the demand for CO2 and leads to a faster diffusion rate.
- Humidity: High humidity reduces the rate of diffusion because water molecules compete with CO2 molecules for space in the intercellular spaces.
- Temperature: Higher temperatures increase the rate of diffusion because CO2 molecules move faster at higher temperatures.
Conclusion
In summary, the movement of CO2 into the photosynthesizing cells of a green leaf occurs primarily through the stomata. This process is driven by the difference in concentration of CO2 between the atmosphere and the intercellular spaces inside the leaf. Factors such as light intensity, humidity, and temperature can affect the rate of diffusion through the stomata.
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How does most carbon dioxide reach into the photosynthesizing cells of...
B is right
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How does most carbon dioxide reach into the photosynthesizing cells of a green leaf?a)Through the hypodermis of the leaf.b)Diffusion through the stomata of the leaf.c)Movement through the phloem.d)Movement through the xylem.Correct answer is option 'B'. Can you explain this answer?
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How does most carbon dioxide reach into the photosynthesizing cells of a green leaf?a)Through the hypodermis of the leaf.b)Diffusion through the stomata of the leaf.c)Movement through the phloem.d)Movement through the xylem.Correct answer is option 'B'. Can you explain this answer? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about How does most carbon dioxide reach into the photosynthesizing cells of a green leaf?a)Through the hypodermis of the leaf.b)Diffusion through the stomata of the leaf.c)Movement through the phloem.d)Movement through the xylem.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for How does most carbon dioxide reach into the photosynthesizing cells of a green leaf?a)Through the hypodermis of the leaf.b)Diffusion through the stomata of the leaf.c)Movement through the phloem.d)Movement through the xylem.Correct answer is option 'B'. Can you explain this answer?.
How does most carbon dioxide reach into the photosynthesizing cells of a green leaf?a)Through the hypodermis of the leaf.b)Diffusion through the stomata of the leaf.c)Movement through the phloem.d)Movement through the xylem.Correct answer is option 'B'. Can you explain this answer? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about How does most carbon dioxide reach into the photosynthesizing cells of a green leaf?a)Through the hypodermis of the leaf.b)Diffusion through the stomata of the leaf.c)Movement through the phloem.d)Movement through the xylem.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for How does most carbon dioxide reach into the photosynthesizing cells of a green leaf?a)Through the hypodermis of the leaf.b)Diffusion through the stomata of the leaf.c)Movement through the phloem.d)Movement through the xylem.Correct answer is option 'B'. Can you explain this answer?.
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