Question

Why plants of temperate regions shed

their leaves before winter seasons?​

Answer 1

The main reason for leaf drop on most trees is that, come winter, it gets pretty cold and dry in our part of the world. Rather than expend energy to protect these fragile organs, trees shed leaves to conserve resources.

Answer 2

Answer:

During winter, there is not enough light or water for photosynthesis. The trees live off the food they had stored during the summer. ... The phenomenon wherein plants “decide” to lose their leaves by sensing the length of nights, is called photoperiodism (from the Greek words for a light/time system).