AP BIOLOGY

Detailed explanation-1: -The spongy mesophyll’s function is to allow for the interchange of gases (CO 2) that are needed for photosynthesis. The spongy mesophyll cells are less likely to go through photosynthesis than those in the palisade mesophyll.

Detailed explanation-2: -The mesophyll is found between the upper and lower epidermis; it aids in gas exchange and photosynthesis via chloroplasts. The xylem transports water and minerals to the leaves; the phloem transports the photosynthetic products to the other parts of the plant.

Detailed explanation-3: -Many plant leaves have two layers of photosynthetic tissue: the palisade and spongy mesophyll. Whereas palisade mesophyll consists of tightly packed columnar cells, the structure of spongy mesophyll is not well characterized and often treated as a random assemblage of irregularly shaped cells.