Which of the following is not a purpose of transpiration?
Options:
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: Option B : B 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.
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