Last Updated: January 23, 2017

Definition - What does Mesophyll mean?

The mesophyll is a soft spongy material located between the upper and lower epidermal surfaces, and is where photosynthesis takes place. It also contains the chloroplasts that give leaves their glossy green appearance.

MaximumYield explains Mesophyll

Most functions of the leaf and plant take place in the mesophyll. It is the part of the plant that converts sunlight and nutrients into chemical energy that is later released.

The mesophyll is a combination of primarily two materials, the palisade and the spongy parenchyma. The palisade and parenchyma are contained in cells that include a large number of chloroplasts that are absolutely essential for the process of photosynthesis. The spongy portions of parenchyma contain large pores or spaces between the cells that serve as a system for gas exchange within the plant.

The chloroplasts are responsible for the process of converting energy from the sun into sugars that fuel the plant and give it energy.

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