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GK QUESTION#3619

In plants, which cells regulate the opening and closing of stomata on the leaf surface?

  1. ARoot hairs
  2. BGuard cellsCorrect answer
  3. CMesophyll cells
  4. DVein cells
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Answer

B. Guard cells

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Explanation

Guard cells flank stomatal pores and regulate their opening and closing through changes in turgor. Root hairs absorb water; mesophyll carries out much leaf photosynthesis; vascular tissues form veins.

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