State: Different parts of a fruit.

Answer

### Step-by-Step Text Solution

1. **Understanding the Structure of a Fruit**: A fruit primarily consists of two main parts: the seed and the pericarp.

2. **Identifying the Pericarp**: The pericarp is further divided into three sub-parts:
- **Epicarp**: This is the outermost layer of the fruit, often referred to as the skin. It serves as a protective covering.
- **Mesocarp**: This is the fleshy middle layer of the fruit, which is typically the edible part. It forms the pulp of the fruit.
- **Endocarp**: This is the innermost layer, which can be hard or membranous. It often surrounds the seed and can be referred to as the inner stony wall.

3. **Development of the Pericarp**: The pericarp develops from the wall of the ovary of the flower. Its thickness can vary depending on the type of fruit; for example, a fruit with a thick mesocarp will have a thicker pericarp.

4. **Understanding the Seed**: The seed consists of three main parts:
- **Embryo**: This is the baby plant that will grow under favorable conditions.
- **Endosperm**: This is the stored food that provides nourishment to the embryo as it develops.
- **Seed Coat**: This protective layer shields the seed from unfavorable environmental conditions.

5. **Functionality of Each Part**:
- The **epicarp** protects the fruit.
- The **mesocarp** provides the edible part.
- The **endocarp** protects the seed.
- The **seed coat** protects the seed from external conditions.
- The **endosperm** provides the necessary nutrients for the embryo to grow.