Gas exchange, necessary for photosynthesis, can occur most easily in which leaf tissue?
A)epidermis
B)palisade mesophyll
C)spongy mesophyll
D)vascular tissue
E)bundle sheath

Question

Quizplus · Accepted Answer

Gas exchange occurs through tiny pores called stomata, which are found mostly on the lower surface of the leaf. These stomata are usually surrounded by special cells known as guard cells. These cells control the opening and closing of the stomata. Spongy mesophyll tissue is the tissue found in leaves that contains large air spaces and is adapted for gas exchange. This is where carbon dioxide enters the leaf and where oxygen and water vapor exit. Therefore, Choice C, spongy mesophyll, is the best choice for this question.

Gas Exchange, Necessary for Photosynthesis, Can Occur Most Easily in Which