Scutellum is

Options

A. Endosperm
B. Cotyledon
C. Aleurone layer
D. Embryo

Answer

### Step-by-Step Solution:

1. **Definition of Scutellum**: The scutellum is a specialized structure found in monocot seeds. It is essentially the cotyledon of monocots, which are plants that have seeds with only one cotyledon.

2. **Examples of Monocots**: Common examples of monocot seeds include rice, wheat, and maize. These seeds typically have a single cotyledon that is referred to as the scutellum.

3. **Structure of Monocot Seed**: In a typical monocot seed, the scutellum is located adjacent to the endosperm, which serves as a reserve food material. The endosperm may be utilized during the development of the embryo, but in some seeds, it remains present.

4. **Components of the Seed**: The monocot seed consists of several parts:
- **Pericarp**: The outer covering of the seed.
- **Endosperm**: The tissue that provides nourishment.
- **Scutellum**: The cotyledon, which is rich in nutrients and plays a crucial role in the seed's development.
- **Coleoptile**: A protective sheath covering the plumule (the embryonic shoot).
- **Radicle**: The part of the embryo that develops into the root.

5. **Function of Scutellum**: The primary function of the scutellum is to absorb nutrients from the endosperm during seed germination, supporting the growth of the embryo.

6. **Conclusion**: In summary, the scutellum is the cotyledon of monocot seeds, playing a vital role in the seed's development and nutrient absorption.