Question

Transpiration is high in

• A. Rainy season / high humidity
• B. Winter
• C. High temperature
• D. Low wind velocity

Answer 1

The correct option is C High temperature

The rate of transpiration is high at high temperature. The water is lost from guard cell which leads to decrease in the water potential of guard cell as compared to the surrounding cell. To stabilize the water potential in the guard cell water rushes from the neighboring cell which creates a cohesion pull in the xylem vessels to pull the water up to the guard cell.

So, the correct answer is option C.