Question

Ninety percent of the water lost by the plants during transpiration is through the _______________ of the leaf.

Answer 1

Stomata:

1. Stomata are small pores, tiny openings found on the epidermis of leaves and are located on the lower surface of leaves typically.
2. They help in the gaseous exchange during the photosynthesis and respiration processes.
3. Plants lose water through stomata, lenticels, or hydathodes.
4. Plants lose water in gaseous form or vapor form through stomata in the process of transpiration.
5. The maximum amount of water is lost by the stomatal transpiration i.e., 50-90% water of total transpiration.
6. Some amount of water may be lost through lenticels, bark, and cuticle.

Final answer: Ninety percent of the water lost by plants during transpiration is through the stomata of the leaf.