From the statements given below, choose the option that are true for a typical femal gametophyte of a flowering plant.
(i) It is 8-nucleate and 7-celled at maturity.
(ii) It is free-nuclear during the development.
(iii) It is situated inside the integument but outside the nucellus.
(iv) It has an egg apparatus situated at the chalazal end.

Options

A. i and iv
B. ii and iii
C. i and ii
D. ii and iv

Answer

To determine which statements are true for a typical female gametophyte of a flowering plant, we will analyze each statement one by one based on our understanding of the structure and development of the female gametophyte, also known as the embryo sac.

### Step-by-Step Solution:

1. **Understanding the Female Gametophyte (Embryo Sac)**:
- The female gametophyte in flowering plants is referred to as the embryo sac. It is formed from a single functional megaspore after meiosis.

2. **Analyzing Statement (i)**:
- **Statement**: "It is 8-nucleate and 7-celled at maturity."
- **Analysis**: At maturity, the embryo sac contains 8 nuclei (2 in the polar nuclei and 1 each in the egg and synergids, and 3 in the antipodal cells). However, it is counted as 7 cells because the two polar nuclei are in one cell (the polar cell).
- **Conclusion**: This statement is **true**.

3. **Analyzing Statement (ii)**:
- **Statement**: "It is free-nuclear during the development."
- **Analysis**: During the development of the embryo sac, the nuclei divide freely without the formation of cell walls initially. This is known as free nuclear division.
- **Conclusion**: This statement is **true**.

4. **Analyzing Statement (iii)**:
- **Statement**: "It is situated inside the integument but outside the nucellus."
- **Analysis**: The embryo sac is actually located within the ovule, which is surrounded by the integuments, but it is not outside the nucellus. The embryo sac is inside the nucellus.
- **Conclusion**: This statement is **false**.

5. **Analyzing Statement (iv)**:
- **Statement**: "It has an egg apparatus situated at the chalazal end."
- **Analysis**: The egg apparatus is located at the micropilar end of the embryo sac, not at the chalazal end. The chalazal end contains the antipodal cells.
- **Conclusion**: This statement is **false**.

### Final Conclusion:
The true statements regarding a typical female gametophyte of a flowering plant are:
- (i) It is 8-nucleate and 7-celled at maturity. **(True)**
- (ii) It is free-nuclear during the development. **(True)**
- (iii) It is situated inside the integument but outside the nucellus. **(False)**
- (iv) It has an egg apparatus situated at the chalazal end. **(False)**

Thus, the correct answer is that statements (i) and (ii) are true.