Question

b) Differentiate between parenchyma, collenchyma and
sclerenchyma on the basis of arrangement of cells ​

Answer 1

Answer:

Parenchyma has a thin cell wall of their cells, and are made up of cellulose. Whereas collenchyma cells have an uneven cell wall made up of pectin and hemicellulose. There is a hard and thick cell wall present of the sclerenchyma cells, which is made up of the lignin.

Answer 2

Parenchyma Tissues:

*Unspecialised cells

*Thin cell walls

*Live cells

*Loosely packed

*Large spaces between cells

Collenchyma Tissue:

*Allows easy bending in various parts of a plant

*Provides Mechanical Support

*Cells are living, elongated

*Very little intermolecular space between the cells.

*Irregularly thickened at the corner

Sclerenchyma Tissue:

*Makes plant hard and stiff

*Cells of tissues are dead

*Long and narrow as the walls are thickened due to lignin

*No internal space between the cells.

*Provides strength to plants