difference between parenchyma and Collenchyma and sclerenchyma
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Answer :
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Parenchyma cells are the type of living plant cells, which are known for healing and repair mechanism, and food storage. Collenchyma cells are known for providing mechanical support to the plants, by protecting the delicate inner part of the plant. Sclerenchyma cells are the matured dead cells and are found in wooden part or hard stem of the plant.
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PARENCHYMA
Parenchyma is a simple tissue found in plants. it forms major component within organs .
cells are generally isodiametric. they may be spherical,oval, polygonal etc.
wall are thin and made up of cellulose. they may either be closely packed or have small intercellular spaces.
it performs functions like photosynthesis, storage, secretion etc
COLLENCHYMA
It occurs in layers below the epidermis in dicot plants. it is found either as a homogeneous layers or in patches.
it consists of cell which are much thickened at the corners due to deposition of cellulose, hemicellulose and pectin
intercellular space are absent between the cells
cells often have chloroplast and can perform photosynthesis
they provide mechanical support to growing parts of the plants
SCHLEREHYMA
It consists of long, narrow cell with thick and lignified cell wall having a few or numerous pits.
they are usually dead and lack protoplasm.
it is divided into two types
1) fiber
2) sclereids