Question

Three uniformly watered plants i, ii and iii were kept in $45\%$ relative humidity, $45\%$ relative humidity with blowing wind and $95\%$ relative humidity, respectively. Arrange these plants in the order (fastest to slowest) in which they will dry up.

• A. i,ii, iii
• B. ii, i, iii
• C. iii, ii, i
• D. iii, i,ii

Answer 1

The correct option is B ii, i, iii

When there is low relative humidity, there is an increase in the transpiration rate. With the increase in the speed of the wind, the rate of transpiration increases. There are two factors affecting the ii plant so ii will dry first, followed by the i and iii plants.

Thus, the correct answer is option B.