Question

Which of the following is not a purpose of transpiration?

• A. Supplying water for photosynthesis
• B. Translocation of sugars from source to sink
• C. Maintaining shape and structure of the plants
• D. Transporting minerals from the soil to all parts of the plant

Answer 1

The correct option is B Translocation of sugars from source to sink

Transpiration is the evaporation of water from plants. It occurs chiefly at the leaves while their stomata are open for the passage of $C{O}_2$ and $O_2$ during photosynthesis. Functions of transpiration:
• Keeps the cell turgid and there by maintains the shape and structure of the plants.
• Cools the surface of the leaves.
• Helps in growth and development.
• It controls the temperature of the plants.
• Allows the movement of minerals from the soil to different parts of the plant.

Absorption of water and minerals by plants directly depends on the transpiration pull generated by loss of water through stomata.

Transportation of sugars from source to sink is a physiological process and is not related to transpiration.