Question

In roots of plants, the root hairs are covered by a very thin ___.

• A. They form permanent tissue which can divide.
• B. They differentiate to form permanent tissue.
• C. They initiate plant growth.
• D. None of the above.

Answer 1

The correct option is B

They differentiate to form permanent tissue.

A root hair is an elongated tubular extension of an epidermal cell of a root, whose major function is to absorb water and minerals from the soil. They are covered by a cell membrane that only allows water to pass through and blocks other larger molecules. This type of a membrane is known as a semi-permeable membrane.