Question

what are the small openings on the underside of leaves through which water vapor escapes during transpiration? stomata root hairs xylem petals

Explanation:

To solve this, we recall plant biology concepts. Stomata are small openings (pores) on leaf undersides that allow gas exchange and water vapor escape during transpiration. Root hairs absorb water/nutrients from soil. Xylem transports water in plants. Petals are part of flowers for reproduction. So the correct answer is Stomata.

Answer:

Stomata