Answer:
mesophyll
Step-by-step explanation:
The mesophyll is the leaf tissue responsible for the photosynthesis process, it is formed mainly by chlorophyll parenchyma, but we can also find collenchyma and sclerenchyma. The chlorophyll parenchyma presents a large amount of chloroplasts. When performing a cross section of the leaf blade, we can see it between the epidermis of the abaxial and adaxial face.
Chloroplasts are organelles that are green in color due to the presence of chlorophyll and are responsible for photosynthesis.