Describe structure of root hair. - Vidyadip

Question

Describe structure of root hair.

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Answer

Root hair is a cytoplasmic extension (prolongation) of epiblema cell.
Each root hair may be approximately 1 to 10 mm long and tube-like structure.
It is colourless, unbranched, short-lived (ephemeral), and very delicate.
It has a large central vacuole surrounded by a thin film of cytoplasm, plasma membrane, and thin cell wall, which is two-layered.
Outer layer is composed of pectin and the inner layer is made up of cellulose.
Cell wall of a root hair is freely permeable but the plasma membrane is selectively permeable.

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