Biology, asked by nups6307, 1 year ago

What is parenchyma, aerenchyma collenchyma and sclerenchyma pls bta do kl exam hai pls

Answers

Answered by Tina11111
0
The word 'parenchyma' just means the bulk of a thing, but in plants specifically, parenchymacells are thin-walled cells that make up the inside of many non-woody plant structures including stems, roots, and leaves.



Aerenchyma is a spongy tissue that forms spaces or air channels in the leaves, stems and roots of some plants, which allows exchange of gases between the shoot and the root. 



Collenchyma, in plants, support tissue of living elongated cells with irregular cell walls. Collenchyma cells have thick deposits of cellulose in their cell walls and appear polygonal in cross section. The strength of the tissue results from these thickened cell walls and the longitudinal interlocking of the cells.


Sclerenchyma is one of the three types of ground, or fundamental, tissue in plants; the other two types are parenchyma (living thin-walled tissue) and collenchyma (living support tissue with irregular walls). Sclerenchyma cells occur in many different shapes and sizes, but two main types occur: fibres and sclereids.


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