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

Options

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

Answer

To solve the question regarding the monocotyledonous seed (wheat grain) and identify the large, shield-shaped cotyledon, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Monocotyledonous Seeds**:
- Monocotyledonous seeds, such as wheat grains, have a unique structure that includes a single cotyledon.

2. **Identify the Cotyledon**:
- The cotyledon in monocots serves as a significant part of the seed, often involved in nutrient storage and transfer during germination.

3. **Review the Options Provided**:
- Option A: Allelium layer - This is incorrect as it refers to an endospermic layer.
- Option B: Coleorhiza - This option is also incorrect; it refers to a protective sheath for the radicle.
- Option C: Scutellum - This is the correct answer; it is a modified cotyledon found in monocot seeds.
- Option D: Hylem - This option is incorrect; it refers to a scar on the seed where it was attached to the ovary.

4. **Conclusion**:
- The correct answer is **Option C: Scutellum**, which is the large, shield-shaped cotyledon present in monocotyledonous seeds like wheat.

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