Give scientific terms for the following:
A layer towards the broader side of the endosperm in maize grain, rich in proteins.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Structure of Maize Grain**: Begin by recognizing that maize grain is classified as an endospermous seed, which means it contains a significant amount of endosperm that serves as a food reserve for the developing embryo.

2. **Identifying the Broader Side of the Endosperm**: In the maize grain, the endosperm has a broader side. This is important to note as the question specifically asks for a layer located towards this broader side.

3. **Recognizing the Protein-Rich Layer**: The layer that is rich in proteins and located towards the broader side of the endosperm is crucial for the seed's nutrition.

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