Question

On hot sunny day why do we feel pleasant sitting under a tree?

Answer 1

tree has lot of leaves which constantly shows transpiration . it is a loss of water through small tiny pores of leaves called stomata. when this water comes on the surface of leaf the water evaporates thereby causing cooling effect .
therefore we feel pleasant sitting under a tree on a hot sunny day.
hope it helps you...

Answer 2

Answer:

Trees has lot of leaves that continuously loss water through their small pores present in them. When this water comes in contact with the surface of leaf, the water evaporates. It causes a cooling effect. Therefore, we feel pleasant sitting under a tree.