Question

Which of the following is not a purpose of transpiration?

• A. Supplies water for photosynthesis.
• B. Helps in translocation of sugars from source to sink.
• C. Cools leaf surface.
• D. Transports minerals from the soil to all parts of the plant.

Answer 1

The correct option is B

Helps in translocation of sugars from source to sink.

The loss of water from the aerial parts because of transpiration results in a tension in the xylem, which is responsible for absorption of water by roots. In transpiration, water is lost in the form of vapor, which has a cooling effect. Minerals are transported along with water to all parts of the plant, and water is transported by transpirational pull.