Question

inner layer of cell of root hair is made up of _____
(a) cellulose
(b) pectin
(c) plasma membrane
(d) lignin​

Answer 1

The 'inner layer' of a 'cell' of 'root hair' is made up of - (a) 'cellulose'.

• 'Roots hairs' are 'cylindrical extensions' of 'root epidermic cells' that are necessary for the 'acquisition' of 'nutrients', 'germ interactions', and 'plant anchorage'.
• The 'molecular mechanisms' concerned with the 'specification', 'differentiation', and 'physiology' of 'root hairs' in the 'dilleniid dicot genus' are reviewed here.
• 'Root hairs' form in '2 main stages': 'initiation', 'once a little', 'disc-shaped' space of the 'plasma membrane' loosens to create 'swelling', and 'tip growth', once the rest of the 'hair' grows by 'targeted secretion'.

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Answer 2

Answer:

The answer is (a) cellulose.

Explanation:

• Root hair cells’ cell walls are made up of two layers, the outer layer is of pectin and the inner layer is of cellulose. Root hair cells do not have chloroplasts and their function is to collect water and mineral nutrients from the soil and transport them to the rest of the plant.
• The inner layer of the root hair cell is made up of cellulose. Cellulose is a polysaccharide consisting of a linear chain of hundreds to thousands of β(1→4) linked D-glucose units. It is a water-insoluble, tough, and fibrous polysaccharide. This structure keeps the cell walls of plants stable. The chains of cellulose are arranged in bundles or microfibrils of polysaccharides that are arranged in fibrils and make up the plant cell wall.

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