SHOW LAB WORK QUESTION 30F24 Guard cells are located on the surface of the under

Question

SHOW LAB WORK QUESTION 30F24 Guard cells are located on the surface of the underside of leaves. How does this structure of the leaf enable the function of guard cells? A. Because the guard cells are at the surface, they keep the stomata constantly open and therefore can help with the exchange of gases. B. Because the guard cells are at the surface, they are exposed to sunlight and therefore can perform photosynthesis. C. Because the guard cells are at the surface, they keep the stomata constantly closed and therefore help prevent water loss. D. Because the guard cells are at the surface, they are in constant contact with the atmosphere and therefore facilitate the exchange of gases

Explanation / Answer

3.The correct answer is : C.Because the guard cells are at the surface, they keep the stomat constantly closed and therefore help prevent water loss.

Reason: Guard cells mostly present underside of leaves to prevent water loss as the underside of leaves contain more stomata.

4.Correct answer is : D.Xylem and phloem

Reason:Xylem and pholem are the main tissues that help in water conduction and food translocation respectively.

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