The function of the spongy layer of a leaf is primarily
A) photosynthesis.
B) gas exchange.
C) vascular transport.
D) protein synthesis.
E) as a shock absorber.

Question

Quizplus · Accepted Answer

The spongy layer of a leaf is located beneath the palisade layer and is responsible for allowing gas exchange to occur through small openings called stomata. This layer contains air spaces that facilitate the diffusion of gases such as oxygen and carbon dioxide in and out of the leaf. While photosynthesis and vascular transport occur in the leaf, they are primarily functions of other leaf structures such as the chloroplasts and veins. Protein synthesis is a cellular process that occurs in the cytoplasm or on ribosomes, not specifically in the spongy layer of a leaf. Shock absorption is not a primary function of the spongy layer of a leaf, although it may contribute to the overall structural support of the leaf.

The Function of the Spongy Layer of a Leaf Is