Step-by-step explanation:
The inner tissue of a leaf that contains chloroplasts is called the mesophyll. The mesophyll is made up of two layers: the palisade mesophyll and the spongy mesophyll. Both layers contain chloroplasts, which are responsible for the process of photosynthesis.
The palisade mesophyll is located near the upper epidermis of the leaf and is made up of elongated cells that are closely packed together. The spongy mesophyll is located below the palisade mesophyll and is made up of irregularly-shaped cells with air spaces in between them. Both layers work together to absorb sunlight, exchange gases, and produce energy through the process of photosynthesis.