Question

Distinguisi beteen parenchyms ,collenchymas and sclerenchyam

Answer 1

Parenchyma:-
A few layers of cells from the basic packing tissue.it is permanent tissue .
Collenchyma:-
This tissue are generally found in leaf stalk below the epidemis and leaf midribs.
Sclerenchyma:-
This type of tissue is present in stems, around vascular bundles in the veins of leaves and in the hard covering of seeds and nuts.

Hope this helps you..

Answer 2

Parenchyma :
It is found in soft parts of plants like root, stem, leaf. The softeness felt in flowers of certain leaves is due to parenchyma present in them. The cells of parenchyma are composed of thin walled living cells. They are specialized out of all the simple tissue. If parenchyma contains chloroplast then it is chlorenchyma. In some aquatic plants leaves have loosly arranged with intercellular space then they are aerenchyma.
Collenchyma :
Collenchyma contains living cells and are capable of cell division. They cells are closely arranged without any space in between. The cells are made up of pectin.
Sclerenchyna :
It consists of thick elongated cells, which are dead at maturity. Sclerenchyma has two types of cells namely fibres and sclerides. Hope it helps u....