Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant duri - Biology MCQ Biology | ExamTest.live

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Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of following options:

A $Both processes can happen together because the diffusion coefficient of water and C O_{2} is different$
B $The above processes happen only during night time$
C $One process occurs during day time, and the other at night$
D $Both processes cannot happen simultaneously$

Solution & Step-by-step Explanation

Both transpiration (loss of water vapour) and C O_{2} uptake occur simultaneously through stomata during the day. This is possible because the diffusion of each gas is independent of the other, governed by their respective concentration gradients and different diffusion coefficients.

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Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of following options:

Both processes can happen together because the diffusion coefficient of water and C O_{2} is different

The above processes happen only during night time

One process occurs during day time, and the other at night

Both processes cannot happen simultaneously

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