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ICSE Class 8 Biology Question 16 of 21

Transport in Plants — Question 16

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Question 8

What are the three special features of root hairs which make them suitable for the absorption of water from the soil?

Answer

The three special features of root hairs which make then suitable for the absorption of water from the soil are:

  1. The numerous root hairs provide a large surface area. More the surface area, greater is the absorption.
  2. Root hairs contain cell sap which is of a higher concentration than the surrounding soil water.
  3. The cell wall is freely permeable, i.e., permits movements of all types of substances. But the cell membrane is semi-permeable. It allows only some substances to pass through it.