Which of the following statements are correct regarding the development of embryo sac ?
(i) The type of nuclear division is free , in which there is no formation of the cell wall .
(ii) Out of the eight nuclei , six are surrounded by a cell wall .
(iii) Central cell situated below the egg apparatus.

Options

A. i and ii only
B. ii and iii only
C. iii only
D. All are correct

Answer

To solve the question regarding the development of the embryo sac, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement (i): The type of nuclear division is free, in which there is no formation of the cell wall.**
- In the development of the embryo sac, the megaspore undergoes mitotic divisions. Initially, the nuclei divide without the formation of cell walls, leading to a multinucleate condition. However, as the process continues, cell walls do form around some of the nuclei. Therefore, this statement is **incorrect**.

2. **Statement (ii): Out of the eight nuclei, six are surrounded by a cell wall.**
- During the formation of the embryo sac, after several mitotic divisions, a total of eight nuclei are formed. Out of these, six nuclei are indeed surrounded by cell walls, while the remaining two nuclei (the polar nuclei) do not have cell walls. Thus, this statement is **correct**.

3. **Statement (iii): Central cell situated below the egg apparatus.**
- The central cell of the embryo sac contains the two polar nuclei and is located below the egg apparatus, which consists of the egg cell and synergids. Therefore, this statement is also **correct**.

### Conclusion:
- Based on the analysis:
- Statement (i) is incorrect.
- Statement (ii) is correct.
- Statement (iii) is correct.

Thus, the correct answer is that statements **(ii) and (iii) are correct**.

### Final Answer:
The correct statements regarding the development of the embryo sac are **(ii) and (iii) only**.

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