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Question

According to sugar concentration theory,during ______ the guard cells begin photosynthesis.

A
Night
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B
Daytime
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C
Both A and B
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D
None of these
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Solution

The correct option is C Daytime
According to sugar concentration theory,during daytime ,the guard cells begin photosynthesis and the sugar produced during the process increases the osmotic pressure which draws in water from the adjoining cells due to endosmosis.

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