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A sudden increase in CO2 concentration around a leaf will cause
- a)Closure of stomata
- b)Wider opening of stomata
- c)Increase in transpiration
- d)Decrease in transpiration due to closure of stomata
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
A sudden increase inCO2concentration around a leaf will causea)Closure...
A sudden increase in carbon dioxide gas concentration around a leaf will cause decrease in transpiration due to closure of stomata.
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A sudden increase inCO2concentration around a leaf will causea)Closure...
The effect of CO2 concentration on stomatal opening and transpiration is dependent on the stomatal response to increased CO2 concentration.
Stomatal response to increased CO2 concentration
When CO2 concentration increases around a leaf, the concentration gradient between the intercellular spaces of the leaf and the atmosphere reduces. This reduces the diffusion of CO2 from the atmosphere into the intercellular spaces of the leaf. This results in a decrease in the demand for CO2 by the leaf. In response, the stomata close to reduce the loss of water through transpiration.
Effect on transpiration
When the stomata close due to an increase in CO2 concentration, transpiration decreases. This is because the stomata act as the primary pathway for water loss from the leaf. Closure of the stomata reduces the flow of water from the leaves to the atmosphere, resulting in a decrease in transpiration.
Conclusion
Hence, a sudden increase in CO2 concentration around a leaf will cause a decrease in transpiration due to the closure of stomata.
Stomatal response to increased CO2 concentration
When CO2 concentration increases around a leaf, the concentration gradient between the intercellular spaces of the leaf and the atmosphere reduces. This reduces the diffusion of CO2 from the atmosphere into the intercellular spaces of the leaf. This results in a decrease in the demand for CO2 by the leaf. In response, the stomata close to reduce the loss of water through transpiration.
Effect on transpiration
When the stomata close due to an increase in CO2 concentration, transpiration decreases. This is because the stomata act as the primary pathway for water loss from the leaf. Closure of the stomata reduces the flow of water from the leaves to the atmosphere, resulting in a decrease in transpiration.
Conclusion
Hence, a sudden increase in CO2 concentration around a leaf will cause a decrease in transpiration due to the closure of stomata.
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Community Answer
A sudden increase inCO2concentration around a leaf will causea)Closure...
Stomata are tiny pores present on the surface of the leaves. They allow the exchange of gases between plants and atmosphere. They allow carbon dioxide to enter and oxygen to exit. There are three environmental factors that affect opening and closing of a plant stomata. These are light, water and carbon dioxide. A sudden increase in carbon dioxide concentration around a leaf will cause closure of stomata so that excess carbon dioxide does not enter the cell. This will decrease in rate of transpiration.
Thus, the correct answer is option D.
Thus, the correct answer is option D.
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A sudden increase inCO2concentration around a leaf will causea)Closure of stomatab)Wider opening of stomatac)Increase in transpirationd)Decrease in transpiration due to closure of stomataCorrect answer is option 'D'. Can you explain this answer?
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