The wheat grain/maize grain has an embryo with one, large, shield shaped cotyledon known as:

Options

A. epiblast
B. coleorrhiza
C. scutellum
D. coleoptile

Answer

To answer the question regarding the wheat grain and maize grain, we need to identify the name of the large, shield-shaped cotyledon present in their embryos. Here’s a step-by-step solution:

### Step-by-Step Solution:

1. **Identify the Type of Plants**:
- Wheat and maize are both classified as monocotyledonous plants, which means they have only one cotyledon.

2. **Understand the Structure**:
- In monocots like wheat and maize, the single cotyledon is typically larger and has a shield-like shape.

3. **Name of the Cotyledon**:
- The specific name for the cotyledon in these plants is the "scutellum."

4. **Function of the Scutellum**:
- The scutellum serves a crucial role in providing nourishment to the developing embryo during the early stages of growth.

5. **Review Other Options**:
- Option A: Epiblast - This is a layer found in the blastocyst of mammals, not relevant here.
- Option B: Coleorhiza - This refers to a protective sheath for the root.
- Option D: Coleoptile - This is a protective sheath for the shoot tip.

6. **Conclusion**:
- Based on the definitions and functions of the terms, the correct answer is **C. Scutellum**.

### Final Answer:
The wheat grain/maize grain has an embryo with one large, shield-shaped cotyledon known as **Scutellum**.

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