Choose the correct statement from the following .

Options

A. Embryo sac is formed by the reduction division in megaspore .
B. Typical female gametophyte is 6 - celled 8 nucleate.
C. The cells located at chalazal ends of embryo sac are called as antipodals
D. Filliform apparatus is a characteristic feature of antipodals.

Answer

To solve the question, we need to evaluate each of the given statements regarding the female gametophyte and embryo sac in plants.

### Step-by-Step Solution:

1. **Evaluate the First Statement:**
- The first statement claims that the embryo sac is formed by reduction division in the megaspore.
- This statement is incorrect because the embryo sac develops from the megaspore mother cell through one meiotic division followed by three mitotic divisions. The meiotic division produces four megaspores, but typically only one survives to form the embryo sac.

**Hint:** Remember that the formation of the embryo sac involves both meiosis and mitosis.

2. **Evaluate the Second Statement:**
- The second statement claims that a typical female gametophyte is 6-celled and 8-nucleate.
- This statement is correct. The mature embryo sac typically consists of 7 cells (1 egg cell, 2 synergids, 3 antipodal cells, and 1 central cell) with a total of 8 nuclei (the central cell has 2 polar nuclei).

**Hint:** Recall the structure of the mature embryo sac and the number of cells and nuclei it contains.

3. **Evaluate the Third Statement:**
- The third statement claims that the cells located at the chalazal end of the embryo sac are called antipodals.
- This statement is correct. Antipodal cells are indeed located at the chalazal end of the embryo sac and serve a nutritive function.

**Hint:** Identify the location and function of antipodal cells in the embryo sac.

4. **Evaluate the Fourth Statement:**
- The fourth statement claims that the filiform apparatus is a characteristic feature of the antipodals.
- This statement is incorrect. The filiform apparatus is actually a structure found in the synergids, not the antipodal cells. It helps guide the pollen tube to the egg cell.

**Hint:** Differentiate between the structures associated with synergids and antipodal cells.

### Conclusion:
Based on the evaluation of the statements, the correct answer is the second statement, which accurately describes the typical structure of the female gametophyte.

### Final Answer:
The correct statement is: **"Typical female gametophyte is 6-celled and 8-nucleate."**