Multiple Choice
Describe the conflict between a plant's need to undergo photosynthesis and its need to conserve water when it is in short supply.Briefly state how plants overcome this problem.
A) For photosynthesis to occur,plants need to take in O2 and release CO2.Plants accomplish this task by opening and closing the stomata on their leaves.Each time the stomata are open,however,plants also lose water vapor.If water is in short supply,this loss can decrease the rate of photosynthesis.To overcome this problem,plants undergo respiration.
B) For photosynthesis to occur,plants need to take in CO2 and release O2.Plants accomplish this task by opening and closing the stomata on their leaves.Each time the stomata are open,however,plants also lose water vapor.If water is in short supply,this loss can decrease the rate of photosynthesis.To overcome this problem,plants undergo photorespiration.
C) For photosynthesis to occur,plants need to take in CO2 and release O2.Plants accomplish this task by opening and closing the stomata on their leaves.Each time the stomata are open,however,plants gain water.This gain can decrease the rate of photosynthesis.To overcome this problem,plants undergo transpiration.
Correct Answer:

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Correct Answer:
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