State the functions of the following in a seed.
Cotyledons

Explanation

### Step-by-Step Solution:

1. **Understanding Cotyledons**: Cotyledons are the first leaves that develop from the embryo of a seed. They are part of the seed structure and play a crucial role in the early stages of a plant's life.

2. **Main Function**: The primary function of cotyledons is to store reserve food. This stored food is essential for the seedling's growth until it can produce its own food through photosynthesis.

3. **Food Storage**: Cotyledons are often fleshy and contain nutrients such as carbohydrates, proteins, and fats. These nutrients provide the necessary energy and building blocks for the developing plant.

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