Starting from the innermost part, the correct sequence of parts in an ovule are

Options

A. egg, nucellus, embryo sac, integument
B. egg, embryo sac, nucellus, integument
C. embryo sac, nucellus, integument, egg
D. egg, integument, embryo sac, nucellus

Explanation

To answer the question about the correct sequence of parts in an ovule starting from the innermost part, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Innermost Part**:
- The innermost part of the ovule is the **egg cell**. This is located within the embryo sac, which is the reproductive structure that contains the female gametes.

2. **Next Layer - Embryo Sac**:
- Surrounding the egg cell is the **embryo sac** itself. The embryo sac is a structure that houses the egg cell along with other cells such as synergids and antipodal cells.

3. **Nutritive Tissue - Nucellus**:
- Outside of the embryo sac is the **nucellus**. The nucellus serves as a nutritive tissue that provides nourishment to the developing embryo sac.

4. **Outer Protective Layer - Integument**:
- The outermost layer of the ovule is the **integument**. The integument acts as a protective covering for the embryo sac and the nucellus.

### Final Sequence:
Thus, starting from the innermost part to the outermost part, the correct sequence of parts in an ovule is:
- **Egg Cell** → **Embryo Sac** → **Nucellus** → **Integument**

### Conclusion:
The correct answer is: **Egg Cell, Embryo Sac, Nucellus, Integument**.

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