The monocotyledonous seed (wheat grain) consists of one large and shield shaped cotyledon known as

Options

A. Aleurone layer
B. Scutellum
C. Coleoptile
D. Hilum

Answer

To answer the question regarding the monocotyledonous seed (wheat grain) and its cotyledon, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Monocotyledonous Seeds**:
- Monocotyledonous seeds are characterized by having one cotyledon. In the case of wheat grain, this cotyledon is large and shield-shaped.

2. **Identifying the Cotyledon**:
- In monocots, the cotyledon serves as a food storage organ. For wheat grains, this structure is specifically referred to as the "scutellum."

3. **Components of the Wheat Grain**:
- The wheat grain consists of several parts:
- The **scutellum** (the cotyledon),
- The **endosperm** (which provides nourishment),
- The **aleurone layer** (a layer of protein),
- The **seed coat** (protective outer layer).

4. **Conclusion**:
- Therefore, the large and shield-shaped cotyledon in a monocotyledonous seed like wheat grain is called the **scutellum**.

### Final Answer:
The monocotyledonous seed (wheat grain) consists of one large and shield-shaped cotyledon known as the **scutellum**.

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