Science — AI-generated practice question

Two functions of transpiration in plants:

1. Absorption and upward movement of water and minerals — Transpiration creates a suction pull (transpiration pull) that helps transport water and dissolved minerals from roots to leaves through xylem.

1. Cooling effect — Evaporation of water through stomata during transpiration helps cool the plant surface, preventing overheating.

Transpiration is the loss of water vapour through stomata. Examiners expect two distinct, clearly stated functions — "transpiration pull" for water transport is the most important point. The cooling function is the second commonly accepted answer. Write each as a separate point for easy mark allocation. Avoid vague statements like "it helps the plant" without explaining how.