Question

Assertion (A): Transpiration is a biological activity

Reason (R): Transpiration occurs through living tissues of aerial parts of plants

• A. Both A & R are true and R explains A
• B. Both A & R are true and R does not explain A
• C. A is true and R is false
• D. Both A & R are false

Answer 1

The correct option is A

Both A & R are true and R explains A

Transpiration is the process of water movement through a plant and its evaporation from aerial parts. Water is necessary for plants but only a small amount of water taken up by the roots is used for growth and metabolism. The remaining water is lost by transpiration. Transpiration occurs chiefly in the leaves when the stomata are open for the passage of CO₂ and O₂ during photosynthesis.