Question

Find the incorrect statements from the following.
A. Roots hairs are multicellular elongations of the epidermal cells.
B. Trichomes are unicellular epidermal hairs of the stem.
C. Guard cells are specialized cells regulating the opening and closing of stomata.
D. Cuticle, collenchyma and stomata are absent in roots.

• A. A, C and D
• B. B, C and D
• C. A and B
• D. B and D

Answer 1

The correct option is C A and B

• A root hair is the minute structure generally, present on the stem and the roots. It is a tubular outgrowth of a trichoblast, a hair-forming cell on the epidermis of a plant root.
• The trichomes often cover the plant body and are the result of divisions of epidermal cells. Trichomes may be either unicellular or multicellular and are either glandular, consisting of a stalk terminating in a glandular head, or nonglandular, consisting of elongated tapering structures.
• Guard cells are specialized cells regulating opening and closing of stomata.
• Cuticle, collenchyma, and stomata are absent in roots.

Therefore, the correct answer is option C.