The mature embryo sac of a typical angiosperm is.............celled and ..................nucleated:-

Options

A. 8,7
B. 7,8
C. 6,8
D. 8,6

Answer

To answer the question regarding the mature embryo sac of a typical angiosperm, we can break down the information as follows:

### Step-by-Step Solution:

1. **Understanding the Structure of the Embryo Sac**:
- The mature embryo sac, also known as the female gametophyte, is a crucial part of the angiosperm reproductive system.

2. **Counting the Cells**:
- The mature embryo sac consists of **7 cells**. This includes:
- 1 egg cell (female gamete)
- 2 synergids (which assist in fertilization)
- 3 antipodal cells (located at the chalazal end)

3. **Counting the Nuclei**:
- The total number of nuclei in the mature embryo sac is **8 nuclei**. This includes:
- The egg cell has 1 nucleus.
- Each of the 2 synergids has 1 nucleus, totaling 2 nuclei.
- The central cell contains **2 polar nuclei**.
- The 3 antipodal cells each have 1 nucleus, totaling 3 nuclei.
- Adding these together gives us 1 (egg) + 2 (synergids) + 2 (polar nuclei) + 3 (antipodal) = 8 nuclei.

4. **Final Answer**:
- Therefore, the mature embryo sac of a typical angiosperm is **7 celled and 8 nucleated**.

### Summary:
The mature embryo sac of a typical angiosperm is **7 celled and 8 nucleated**.

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