Which of the following is representative of basal part of the ovule?

Options

A. Hilum
B. Micropyle
C. Chalaza
D. Placenta

Answer

To determine which part of the ovule is representative of its basal part, we can follow these steps:

1. **Understand the Structure of the Ovule**: The ovule has several parts, including the funicle, hilum, micropyle, integuments, nucellus, and the embryo sac.

2. **Identify the Funicle and Hilum**: The funicle is a stalk that connects the ovule to the placenta. The hilum is the point where the funicle attaches to the ovule.

3. **Locate the Micropyle**: The micropyle is located at the top of the ovule and is the opening through which the pollen tube enters.

4. **Recognize the Integuments**: The ovule is surrounded by two layers called integuments, which protect the developing embryo sac.

5. **Identify the Nucellus**: Inside the integuments is the nucellus, which contains the reserve food material that nourishes the embryo sac.

6. **Determine the Basal Part**: The basal part of the ovule is known as the chalaza. It is located opposite the micropyle and serves as the region where the ovule is attached to the placenta.

7. **Evaluate the Options**:
- **Option A (Hilum)**: Incorrect, as it is located at the attachment point of the funicle.
- **Option B (Micropyle)**: Incorrect, as it is at the top of the ovule.
- **Option C (Chalaza)**: Correct, as it represents the basal part of the ovule.
- **Option D (Placenta)**: Incorrect, as it refers to the tissue that supports the ovule within the ovary.

8. **Conclusion**: The correct answer is option C, chalaza, as it is the representative of the basal part of the ovule.