Origin of mesophyllfrom Modern Latin mesophyllum: see meso- and -phyll
The definition of mesophyll is the soft tissue inside a leaf.
An example of mesophyll is the tissue in the leaf that plays an important role in photosynthesis.
the soft tissue (green parenchyma) inside a leaf, between the lower epidermis and the upper, chiefly concerned in photosynthesis
The photosynthetic tissue of a leaf, located between the upper and lower epidermis.
- mes′o·phyl′lic mes′o·phyl′lous
The tissues of a leaf that are located in between the layers of epidermis and carry on photosynthesis, consisting of the palisade layer and the spongy parenchyma. Most mesophyll cells contain chloroplasts.
- The only pathways for the gases which thus pass between the cells of the mesophyll and the outside air are the stomata.
- In the leafy shoot this function is mainly localized in the cortical tissue of the leaves, known as mesophyll, Mesophyli.
- In fleshy leaves which contain a great bulk of tissue in relation to their chlorophyll content, the central mesophyll contains little or no chlorophyll and acts as waterstorage tissue.
- The cells of these sheaths are often distinguished from the rest of the mesophyll by containing little or no chlorophyll.
- Chiefly, they provide a number of channels, penetrating every part of the leaf, along which water and dissolved salts are conveyed to, and elaborated food-substances from, the mesophyll cells.