Question

Choose the correct answers from the alternatives given.
Which one of the following is not a function of transpiration?

• A. Cooling of leaves
• B. Excretion of minerals
• C. Uptake of minerals
• D. Uptake of water

Answer 1

Answer: (B)

Excretion of minerals

Transpiration is the loss of water from the surface of the leaves in the form of water vapour through stomata. The loss of water causes the cooling effect on the plant. Sometimes it can lower the plant body temperature by 10 to 15 degrees.

It transports minerals along with water from the soil to various parts of the plant. It also supplies the water needed for photosynthesis. Transpiration does not cause excretion of the minerals.

Hence, the correct answer is 'Excretion of minerals'.