Gas Exchange in leaf

Question 1

Gas exchange happen in what cells in the leaf?

Answer 1

Spongy mesophyll

Question 2

Describe the spongy mesophyll

Answer 2

Covered by a thin layer of water and loosely packed

Question 3

Spongy mesophyll’s features ?

Answer 3

Allow carbon dioxide to diffuse into the spongy mesophyll and oxygen diffuse out.

Question 4

Features of the leaves and their function

Answer 4

Large surface area : maximise light absorption
Thin: short distance for carbon dioxide to diffuse into leaf cells
Thin waxy cuticle: this protects the leaves without blocking out light
Thin transparent epidermis: allows light to reach the palisade cells