Question

What is wilting?some plants show wilting of their leaves even when the soil is well watered.why is it so?

Answer 1

Wilt: (of a plant, leaf, or flower) become limp through heat, loss of water or disease; droop.
During noon time, the amount of sunlight increases drastically causing an increase in the rate of transpiration. At this moment, the rate of transpiration exceeds the rate of absorption of water. This causes lack of water in the plant so the plant cells lose their water in the form of water vapor through transpiration. Thus, the cells lose their turgidity and turn flaccid which makes the leaves wilt even when the plant is well watered.

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Answer 2

Answer: wilting is excessive loss of water due to transpiration which is more than rate of absorbtion of water.

Explanation:

Plants experience transpiration when exposed to hot sun in the afternoon. It involves loss of water from the plant in the form of water vapour. This rapid loss of water form the cells make them flaccid which in turn become loose making the plant droop or wilt in the hot sun even when the soil is well watered.