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NEET Biology question

BiologyTransport in PlantsNEET

Not in NEET syllabus

Select the correct events leading to the opening of the stomata.

I. Decline in guard cell solutes. II. Lowering of osmotic potential of guard cells. III. Rise in potassium levels in guard cells. IV. Movement of water from neighbouring cells into guard cells. V. Guard cells becoming flaccid.

Answer: (B)

Solution

Stomatal opening begins with active K⁺ uptake into guard cells (III), which lowers their osmotic potential (II); this drives osmotic entry of water from adjacent epidermal cells (IV), making guard cells turgid, not

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Question ID VK-127592