Guard cells help in __________.

Transpiration

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Guttation

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Protection against grazing animals

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Respiration

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Solution

The correct option is D Transpiration
Answer is A
Guard cells help in regulating the transpiration rate by controlling the stromal opening and closing. These cells are present surrounding each stroma. They contain Phototropins that are serine and threonine kinases which are mediated by light.

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Guard cells help in __________.

The correct option is D TranspirationAnswer is AGuard cells help in regulating the transpiration rate by controlling the stromal opening and closing. These cells are present surrounding each stroma. They contain Phototropins that are serine and threonine kinases which are mediated by light.

The correct option is D Transpiration
Answer is A
Guard cells help in regulating the transpiration rate by controlling the stromal opening and closing. These cells are present surrounding each stroma. They contain Phototropins that are serine and threonine kinases which are mediated by light.