Question

Difference between collenchyma parenchyma and sclerenchyma

Answer 1

heyyyyy mate.............

some of the differences includes ---->

Parenchyma: Parenchyma cells are found in every soft part of the plant like leaves, fruits, bark, flowers, pulp and pith of the stems.

Collenchyma: Collenchyma cells are found in petiole, leaves and young stems, appearing as a continuous ring beneath the epidermis. 

Sclerenchyma: Sclerenchyma is found in the mature parts of the plant like herbaceous perennials and woody plants.

Specialized/Unspecialized ----

Parenchyma: Parenchyma cells are unspecialized cells.

Collenchyma: Collenchyma cells are specialized cells.

Sclerenchyma: Sclerenchyma cells are specialized cells.

Cell Wall Thickness ----

Parenchyma: Parenchyma consists of a thin cell wall.

Collenchyma: Collenchyma consists of an unequally thin cell wall.

Sclerenchyma: Sclerenchyma consists of a thick and rigid cell wall.

Cell Wall Constituents ----

Parenchyma: Parenchyma cell wall is made up of cellulose.

Collenchyma: Collenchyma cell wall is made up of cellulose and pectin.

shape -----

Parenchyma: Parenchyma cells are isodiametric in shape.

Collenchyma: Collenchyma cells are polygonal in shape.

Sclerenchyma: Sclerenchyma cells are tubular in shape.

Type ----

Parenchyma: Parenchyma produces permanent tissues, which can achieve meristematic activity when stimulated.

Collenchyma: Collenchyma produces permanent tissues, which can achieve meristematic activity when stimulated.

Sclerenchyma: Sclerenchyma also produces permanent tissues, eliminating the ability of dividing.

Alive/Dead at Maturity ----

Parenchyma: Parenchyma consists of living cells at maturity.

Collenchyma: Collenchyma consists of living cells at maturity.

Sclerenchyma: Sclerenchyma consists of dead cells at maturity. Hence, their protoplast is absent.

Function -----

Parenchyma: Photosynthesis, storage of food, gas exchange and floating of aqueous plants are the major functions of parenchyma.

Collenchyma: Providing mechanical support to the plant, resisting bending and stretching by the wind are the major functions of collenchyma.

Sclerenchyma: Providing mechanical support, protection and transportation of water and nutrients are the major functions of sclerenchyma

hope it helps........

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Answer 2

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Parenchyma cells are found in every soft part of the plant, but collenchyma cells are found in specific part of the plant like leaves, stems, and petioles, whereas sclerenchyma cells are found in mature parts of the plants or trees. ... Whereas collenchyma cells have an uneven cell wall made up of pectin and hemicellulose.

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