Everything about Parenchyma totally explained
Parenchyma is a term used to describe a bulk of a substance. It is used in different ways in
animals and in
plants.
The term is
New Latin, from
Greek parenkhuma,
visceral flesh, from
parenkhein, to pour in beside : para-, beside + en-, in + khein, to
pour.
In animals
The
parenchyma are the
functional parts of an
organ in the body. This is in contrast to the
stroma, which refers to the
structural tissue of organs, being exactly, connective tissues.
The mesodermal layer of the embryo develops into a loose collection of cells known as
parenchyma tissue. This tissue occupies the entire space between the outer body wall and the endoderm of the gut.
Examples include:
In plants
Parenchyma cells are thin-walled
cells of the
ground tissue that make up the bulk of most
nonwoody structures, yet sometimes their cell walls can be lignified. Parenchyma cells in between the
epidermis and
pericycle in a
root or
shoot constitute the
cortex, and are used for storage of food. Parenchyma cells within the center of the root or shoot constitute the
pith. Parenchyma cells in the ovary constitutes the
nucellus and are brick-like in formation. Parenchyma cells in the leaf constitute the
mesophyll; they're responsible for photosynthesis and they allow for the interchange of gases.
Further Information
Get more info on 'Parenchyma'.
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