Question

differentiate between collenchyma and parenchyma

Answer 1

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Collenchyma- A plant tissue that consists of living usually elongated cells with unevenly thickened walls and acts as support especially in areas of primary growth.

Parenchyma- Parenchyma is the bulk of a substance. In animals, a parenchyma comprises the functional parts of an organ and in plants parenchyma is the ground tissue of nonwoody structures.

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Answer 2

Differences parenchyma

1. The cell wall is commonly thin but uniform in thickness.

2. It provides mechanical strength only when the cells are fully turgid

3. Parenchyma is found in both the outer and inner parts of plant organs.

4. It does not have a high refractive index.

5. It shows several types of modifications.

6. It occurs in both primary and secondary structures of plant

7. It has the ability to dedifferentiate and form secondary meristem.

Difference  Collenchyma:

1. The cell walls develop extra thickenings at places (tangential walls, angles or adjacent to intercellular spaces).

2. Collenchyma is a living mechanical tissue.

3. Collenchyma is mostly restricted to the sub-epidermal parts of aerial plant organs.

4. It usually has high refractive index.

5. Modifications are very few.

6. It occurs in only aerial primary body parts of the plants.

7. The ability to dedifferentiate is nearly absent.

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