Question

Question 3 (b)
Choose the correct option:
(b) Water absorption through roots can be increased by keeping the plants
(i) in the shade
(ii) in dim light
(iii) under the fan
(iv) covered with a polythene bag

Answer 1

The answer is (iii) under the fan.

Water absorption through roots can be increased by keeping the plants under the fan. Air movements carry away water vapour from leaves and this prevents air around them from becoming saturated with water vapour. Consequently, depending upon temperature and humidity, transpiration is faster when the plant is placed under the fan than in still air.