Question

What is transpiration? Mention its significance.

Answer 1

transpiration process in plants creates suction force to help water column rise in plants

its significance is that 
excess water will be removed
water will be transported to all parts of plants

Answer 2

Transpiration is the process in which moisture is carried through plants from roots to pores on the underside of leaves, where it changes to vapor and is released. Transpiration also provides a significant cooling effect which keeps the plant from being over heated. It also helps in removal of excess water from the plant.