Question

Which do guard cells control?

a. movement through xylem

b. movement through phloem

c. the size of the stomata

d. the rate of food production?

Answer 1

The size of stomata to check transpiration

Answer 2

Answer : The correct answer is -

c. the size of the stomata.

Guard cells are the specialized cells, which are present around stomata (tiny holes/openings on the leaves) in plants.

These cells regulate the opening and closing of stomata, which help in the exchange of gases and loss of water in the atmosphere that is transpiration.

Thus, it can be concluded that guard cells help in controlling the size of stomata.