Guard cells help in regulating the rate of ________.

condensation

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digestion

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excretion

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transpiration

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Solution

The correct option is D
transpiration

Stomata are tiny pores in leaves meant for gaseous exchange. They are also the main source of transpiration. Each stoma is surrounded by two small and green epidermal cells called guard cells. These guard cells help in regulating the rate of transpiration by opening and closing the stomata.

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Similar questions

Define the following processes

(a) Condensation

(b) Evaporation

(c) Transpiration

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