Question

Give reasons for the following statements.(Any3)
1) Intercellular spaces are absent between the cells of collenchyma.
2) Areolar tissue is the most widely distributed connective tissue in animals.
3) Leaves are reduced to spines in desert plants like cacti.
4) Photosynthesis purifies atmosphere.​

Answer 1

Answer:

The intercellular spaces in this tissue are absent because in intercellular spaces at the corner of cells thickenings of cellulose and pectin develop due to which the cell wall become rigid and thick at corners. Sometimes collenchyma develops chloroplasts.

Explanation:

Answer 2

intercellular spaces in this tissue are absent because in intercellular spaces at the corner of cells thickenings of cellulose and pectin develop due to which the cell wall become rigid and thick at corners. Sometimes collenchyma develops chloroplasts.

Areolar tissue is the most widely distributed connective tissue in the animal body. Located in the skin, areolar tissue binds the outer layers of the skin to the muscles lying underneath. They are also found in, around the mucous membranes, surrounding nerves, blood vessels and various other body organs.