The outermost layer of endosperm in monocots made up to proteins is called

Options

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

Answer

To solve the question regarding the outermost layer of endosperm in monocots that is made up of proteins, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Structure of Monocots**:
- Monocots (monocotyledons) are a group of flowering plants that have seeds with one embryonic leaf or cotyledon.
- The seed structure typically includes an endosperm, which is a tissue that provides nutrition to the developing embryo.

2. **Identifying the Components of the Seed**:
- In a monocot seed, the endosperm is the larger part, while the embryo is the smaller part.
- The endosperm serves as a nutritive tissue for the embryo.

3. **Recognizing the Layers of the Endosperm**:
- The endosperm has different layers, and the outermost layer is particularly important in this context.
- The question specifically asks for the outermost layer of the endosperm.

4. **Evaluating the Options**:
- The options provided are:
1. Aileron layer
2. Scutellum
3. Scoliptile
4. Scolorizing
- Among these options, we need to identify which one refers to the outermost layer of the endosperm.

5. **Identifying the Correct Answer**:
- The aileron layer is known to be a proteinaceous layer that surrounds the endosperm in monocots.
- The other options (scutellum, scoliptile, and scolorizing) are parts of the embryo or unrelated terms.

6. **Conclusion**:
- Therefore, the correct answer to the question is the **Aileron layer**.

### Final Answer:
The outermost layer of endosperm in monocots made up of proteins is called the **Aileron layer**.