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WHY DO GUARD CELLS REGULATE OPENING AND CLOSING OF STOMATAL PORES ?

Asked by ca.anshu.g 30th May 2016, 7:26 PM
Answered by Expert
Answer:
Stomata are the tiny pores present on the surface of the leaves. When large amount of gaseous exchange takes place in leaves through these pores, exchange of gases also takes place on the surface of stem roots and leaves. A large amount of water is lost through these pores. The plant closes these pores when carbon dioxide is not required for photosynthesis. So, guard cells comes into act.

Guard cells performs the opening and closing of these pores. The guard cells swell when water flows into these pores and stomatal pores get open, and as the water shrinks the guard cell closes.
Answered by Expert 31st May 2016, 7:42 AM
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