2022-01-26 18:16:01
ANATOMY FURTHER:-
Permanent tissues can be divided into two types:-
1. Simple Permanent Tissues
The permanent tissues having all cells similar in structure and function are called simple tissues.
These are groups of homogenous cells which perform the same function.
i. Parenchyma:-
It is a living, simple permanent tissue composed of thin-walled cells. Parenchyma (Para-beside; enchein – to pour) is also called primary tissue or ground tissue. It is present in cortex, pith, palisade, mesophyll and some other parts of flower. It is mostly produced by the ground tissue. The parenchyma terms the major component within the organs.
The characteristic features of parenchyma are as follow:-
(a) The cells are thin-walled, less spherical and polyhedral in shape, these are generally isodiametric.
(b) The cell wall composed of cellulose, hemicellulose and pectin.
(c) Cells have a large central vacuole, peripheral cytoplasm with a nucleus.
(d) The cells may be either closely packed or have small intercellular spaces.
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