The outermost layer of maize endosperm is known as

Options

A. Perisperm
B. Aleurone
C. Tapetum
D. Endothecium

Explanation

To answer the question regarding the outermost layer of maize endosperm, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Endosperm**: The endosperm is a tissue within the seed that provides nourishment to the developing embryo. In maize, which is a monocot, the endosperm plays a crucial role in seed development.

2. **Identifying the Layers**: The endosperm consists of different layers. The outermost layer of the endosperm in maize is specifically known for its unique structure and function.

3. **Recognizing the Options**: The options provided are perisperm, elurone, tapetum, and endothecium. We need to analyze these terms to identify which one corresponds to the outermost layer of the maize endosperm.

4. **Analyzing Each Option**:
- **Perisperm**: This is a tissue that can be found in some seeds but is not the outer layer of the maize endosperm.
- **Elurone**: This is indeed the outermost layer of the maize endosperm. It is composed of protein-rich cells that provide nutrients during germination.
- **Tapetum**: This is a layer associated with pollen grains, not the endosperm.
- **Endothecium**: This is also related to pollen and is not relevant to the endosperm structure.

5. **Conclusion**: Based on the analysis, the correct answer to the question is that the outermost layer of maize endosperm is known as the **elurone**.

### Final Answer:
The outermost layer of maize endosperm is known as the **elurone**.

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