Question

 In dark, the guard cells are:
More turgid
Not turgid
Less turgid
none of these​

Answer 1

Answer: The correct answer is less turgid.

Explanation: During the night, the content of guard cell osmolyte molecules such as malate and sugars seems to be converted into starch. Furthermore, sucrose accumulation at the apoplastic space and its degradation within guard cells has been reported as mechanisms to induce stomatal closure. Guard cells surrounding the stomata regulate the size of the stomata. The guard cells in bright light consume water through the process of osmosis and get turgid and plump while in lower light, these guard cells tend to lose water and turn flaccid, thereby causing the closing of the stomata and this is why the guard cells are lees turgid during the night.

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