The single shield shaped cotyledon in monocot seed is known as ……

Options

A. coleoptile
B. scutellum
C. aleurone layer
D. perisperm

Answer

To answer the question, "The single shield-shaped cotyledon in monocot seed is known as…", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Monocot Seeds**:
- Monocots are a class of angiosperms characterized by having a single cotyledon in their seeds. This is in contrast to dicots, which have two cotyledons.

2. **Identify the Cotyledon in Monocots**:
- The cotyledon is the first leaf or leaves that appear from a germinating seed. In monocots, this structure is unique because it is shield-shaped and serves a specific function in the seedling's development.

3. **Name the Cotyledon**:
- The specific term used for the single cotyledon in monocot seeds is "Scutellum". This term refers to the shield-like shape of the cotyledon that is positioned on one side of the embryonal axis.

4. **Differentiate from Other Terms**:
- It is important to note that other terms mentioned, such as Cauliptyl, Allurone layer, and Parry's pump, refer to different structures or functions within the seed and are not applicable to the cotyledon itself.

5. **Conclusion**:
- Therefore, the correct answer to the question is that the single shield-shaped cotyledon in monocot seeds is known as **Scutellum**.

### Final Answer:
The single shield-shaped cotyledon in monocot seed is known as **Scutellum**.