Question

What do you mean by wiliting of leaves?

Answer 1

It refers to the loss of rigidity of non-woody parts of the plant.

Answer 2

Wilting is loss of rigidity of non-woody parts of plants when the turgor pressure in non-lignified plant cells falls towards zero and so there is diminished water in the cells. The rate of loss of water from the plant is greater than the absorption of water in the plant.