Question

Difference between parenchyma collenchyma and scelenchyma tissues.

Answer 1

Parenchyma tissues consist of living cells that are thin-walled and they may be compact or have extensive spaces between the cells. They are also called ground, or fundamental, tissue and makes up the mesophyll (internal layers) of leaves and the cortex (outer layers) and pith (innermost layers) of stems and roots.


Collenchyma cells consists of thin primary walls and provide extra structural support in regions of new growth. Collenchyma cells have walls which during their development and extension are mainly cellulosic.


Sclerenchyma is the tissue responsible for providing support to plants. Their cell walls comprises of cellulose, hemicellulose and lignin. Their tissues are of two types - fibres and sclereids.