Question

define parenchyma,collenchyma and sclerenchyma

Answer 1

Collenchyma is a permanent tissue, which gives flexibility to plants.

Parenchyma is a permanent tissue, which stores nutrients and water which consists of relative unspecialised cells with thin cell walls.

Sclerenchyma is a permanent tissue which makes the plant hard and stiff. The Husk of Coconut is made up of sclerenchymatous tissue.

Hope that helps ❤❤❤✌✌✌

Answer 2

Parenchyma :- it is the most common living plant tissue. They have more intracellular spaces, Consists of thin cell walls and have large vacuoles. The main function of the parenchyma cells of roots and stem is the storage of food and water. The intercellular air spaces help in gaseous exchange.

Collenchyma :- These are elongated living cells with small intercellular spaces. Their cell walls are made up of cellulose and pectin.Collenchyma occur in the peripheral regions of stems and leaves to provide mechanical support and flexibility in plants.

sclerenchyma :- Sclerenchyma tissue is composed of sclerenchyma cells, which are usually dead at maturity.  They characteristically contain very thick, hard secondary walls lined with lignin; consequently, sclerenchyma provides additional support and strength to the plant body. This tissue is mainly present in plants to give additional strength to the plants.

----------------------------------

hope it helps friend!!