Question 29 - MCQs from NCERT Exemplar - Chapter 6 Class 10 - Life Processes

Last updated at April 16, 2024 by

The opening and closing of the stomatal pore depends upon

(A) oxygen

(B) temperature

(C) water in guard cells

(D) concentration of CO 2 in stomata

 

Answer

Stomata are pore-like structures present on the surface of leaves which help in the exchange of gases and transpiration.

  • The opening or closing of stomata depends on the water in guard cells.
  • When there is water inside the guard cells, they become swollen and the stomata is open.
  • When the guard cells lose water, they become shrunken the stomata closes

Open and Closed Stomata-01.jpg

So, the correct answer is (c)

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