Question

which of the following one of the main constituent of cell wall ,(a) cellulose (b) pectin (c) starch (d) protein ​

Answer 1

Answer:

A cell wall is a tough and flexible structural layer that surrounds cell membrane in plants, algae and most prokaryotes

It is made up of-

Cellulose is an important component of plant cell walls that make the plant stems, leaves and branches rigid, they are present in the form of cellulosic microfibrils (fibre-like strands) in the inner layer of primary wall.

Pectin is an essential polysaccharide present in the plant cell wall that allows the extension of a primary cell wall and in plant growth.

Hemicellulose is a heteropolymer (arabinoxylans) which is present along with cellulose in the cell walls.

Lignin is the main component of the secondary cell wall of plants.

The plant cell wall consists of cellulose, hemicellulose and lignin in the ratio 4:3:3.

So, the correct answer is 'Cellulose, hemicellulose, pectin and lignin'.

Explanation:

hope it is helpful

Answer 2

(a) cellulose..... is the main constituent of the cell wall