Answer to Question #221713 in Biology for Shine

Question

Explain the situation faced by mesophyll cells in the terms of gaseous exchange?

Answer 1

Gas exchange happens in the spongy mesophyll tissue of the leaf. Spongy mesophyll cells are covered by a thin layer of water and loosely packed.

When the plant is photosynthesizing during the day, these features allow carbon dioxide to into the spongy mesophyll cells, and oxygen to diffuse out of it.

To get to the spongy mesophyll cells inside the leaf, gases diffuse through small pores called stomata. They also open or close to control the loss of water from leaf by the process of transpiration.