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CBSE Class 11-science Answered

How does turgidity of guard cells help stomata to open or close?
Asked by Topperlearning User | 11 Jul, 2014, 01:38: PM
answered-by-expert Expert Answer

When the turgidity inside the guard cells increases, the outer thick walls of the guard cells bulge out. This creates a force on the inner walls of the guard cells and they become crescent shape resulting in the opening of stomata.

When the guard cells lose their turgor due to water loss, the inner walls gain their original size. The guard cells become flaccid resulting in the closing of the stomata.

Answered by | 11 Jul, 2014, 03:38: PM
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