Question

The coleoptile is a characteristic feature of monocots. It is:

• A. a protective sheath of plumule
• B. a protective sheath of radicle
• C. a protective sheath of a seed
• D. an extension of radicle

Answer 1

The correct option is A a protective sheath of plumule

The protective sheath of a plumule is coleoptile in monocot seed.
The protective sheath of a radicle is coleorhiza in monocot seed.

Seed coat forms the protective sheath of a seed. It is made up of the outer testa and the inner tegmen. The testa is thick and the tegmen is thin and membranous. In monocots, the seed coat is membranous and is fused with the fruit wall. Also, the testa and tegmen of the seed coat are fused.