Wilting is the loss of rigidity of non-woody parts of plants. This occurs when the turgor pressure in non-lignified plant cells falls towards zero, as a result of diminished water in the cells. The rate of loss of water from the plant is greater than the absorption of water in the plant.
Answer: The wilting of leaves takes place in summer due to a high rate of transpiration which results in water loss and loss of turgidity and the cells become rigid.
