Question

The diagram represents the L.S of monocot seed. Choose the correct combination of labelling.

• A. (A)- Alerone layer, (B)- Scutellum, (C)- Coleoptile, (D)- Coleorhiza
• B. (A)- Seed coat, (B)- Scutellum, (C)- Coleoptile, (D)- Coleorhiza
• C. (A)- Epithelium, (B)- Scutellum, (C)- Coleoptile, (D)- Coleorhiza
• D. (A)- Endosperm, (B)- Scutellum, (C)- Coleoptile, (D)- Coleorhiza
• E. (A)- Endosperm, (B)- Scutellum, (C)- Plumule, (D)- Radicle

Answer 1

The correct option is D (A)- Endosperm, (B)- Scutellum, (C)- Coleoptile, (D)- Coleorhiza

The scutellum is equivalent to a thin single cotyledon in monocots. It is very thin and absorbs nutrients from the endosperm during germination. The endosperm is the storage tissue of the seed and provides nourishment to the growing seedling at germination. Coleoptile is the pointed protective sheath covering the emerging shoot in monocotyledons such as grasses. Coleoptiles consist of specialised cells that do not divide, but increase in size as they accumulate more water. Coleorhizae is a sheath-like structure found in monocotyledons that connects the coleoptile to the primary root and acts as a protective covering enclosing the plumule and radicle.
Thus, the correct answer is option D.