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When the Stomata in a Leaf Close During the Day

Question 17

Multiple Choice

When the stomata in a leaf close during the day, then


A) carbon dioxide in the air spaces in the leaf decreases.
B) oxygen in the air spaces in the leaf increases.
C) C3 plants carry on photorespiration, using O2 and producing PGA and CO2.
D) all photosystems as well as photorespiration come to a halt.
E) All choices but the halting of photosystems are correct.

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