What is the role of stomata in a leaf?
Answer and explanation
Correct answer: A. They allow gas exchange and loss of water vapour
- Step 1: Stomata are pores, mostly on the underside of a leaf. Step 2. Carbon dioxide enters and oxygen leaves, and water vapour is lost by transpiration; guard cells control the opening. Answer: gas exchange and water loss. Why not the others: Roots absorb water, phloem carries sugars, and support is provided by turgor and lignified tissue.
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