Question

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Differentiate between root hairs and trichomes
Carries 2 marks
Class 11 CBSE

Answer 1

Answer:

Root hairs and trichomes are specialized structures on the epidermis of rhizosphere (soil) and aerial plant parts respectively. Root hairs are found in young roots near their tips whereas trichomes are found all over the stem, and in some plants, also in leaf and flowers.

Answer 2

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# Stem Hairs:

1. They are generally multicellular.

2. Stem hairs are additional cells. They do not arise as outgrowths of the epidermal cells.

3. They may be branched or un-branched.

4. They are spread all over the stem.

5. Stem hairs are heavily cutinized.

6. They are long-lived.

7. Stem hairs prevent or reduce the rate of transpiration.

# Root Hairs:

1. Root hairs are unicellular.

2. Root hairs are tubular outgrowths of epiblema cells.

3. Root hair are always un-branched.

4. They are found in clusters in young roots near their tips. It is known as root hair zone.

5. Root hairs are not cutinised.

6. They are short lived.

7. Root hairs take part in absorption of water from the soil.