Question

Long answer question

Q.Mention the characteristic features of parenchyma,collenchyma and sclerenchyma.

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Answer 1

features of parenchyma: parenchyma serves as packaging tissue, to fill the spaces between other tissues and maintain the shape and firmness of the plant due to its turgid cell
feature of collenchyma: collenchyma is a mechanical tissue in young dicotyledonous stems and provides mechanical support and elasticity
feature of scelrenchyma:scelrenchyma is mainly mechanical and protective in function. It gives strength, rigidity,flexibility and elasticity to the plant body and ,thus,enables it to withstand various strains .


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Answer 2

Parenchyma - these cella are basically spherical shaped when they are first made. However, these cells have thin walls, which flatten at the points of contact when many cells are packed together. These cells have large vacuoles.

Collenchyma - These cells have a living protoplasm, like paremchyma cells, and may also stay alive for a long period of time. The feature that main distinguishes them from parenchyma cells is the increased thickness of their walls. The cell wall is made up of Cellulose.

Sclerenchyma - These cells have thick and tough cells walls. At maturity, most sclerenchyma cells are dead. Their function only as structure and support. Sclerenchyma cells can occur in two forms.........


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