Female plant is diploid and male plant is tetraploid. Find out the correct match

Options

A. Embryo (3n), endosperm (4n), integu-ments (2n), egg (n) and pollen grain (2n)
B. Embryo (2n), endosperm (6n), integu-ments (2n), egg (4n) and pollen grain (4n)
C. Embryo (2n), endosperm (3n), integu-ments (2n), egg (n) and pollen grain (n)
D. Embryo (6n), endosperm (4n), integu-ments (3n), egg (n) and pollen grain (2n)

Answer

To solve the question, we need to analyze the genetic contributions of the male and female plants in the context of their ploidy levels.

### Step-by-Step Solution:

1. **Identify the Ploidy Levels**:
- The female plant is diploid (2n).
- The male plant is tetraploid (4n).

2. **Determine Gamete Formation**:
- In plants, gametes are formed through meiosis.
- The female plant (2n) will produce haploid (n) gametes.
- The male plant (4n) will produce diploid (2n) gametes because it has double the chromosome number.

3. **Calculate the Endosperm Formation**:
- The endosperm is formed after fertilization, which involves the fusion of the male and female gametes.
- The typical formation of endosperm in flowering plants is triploid (3n), formed by the fusion of one male gamete (n) with two polar nuclei (2n) from the female gametophyte.
- In this case, since the male plant produces 2n gametes and the female plant produces n gametes, the endosperm will be formed as follows:
- 2n (from male) + 2n (from male) + n (from female) = 5n.

4. **Identify the Correct Match**:
- Now, we need to match the structures with their respective ploidy levels:
- Embryo: Typically 2n.
- Endosperm: In this case, it will be 5n.
- Integuments: Typically 2n.
- Egg: n.
- Pollen grain: n.

5. **Conclusion**:
- Given the options and the calculations, the correct match for the embryo, endosperm, integuments, and pollen grain based on the ploidy levels is:
- Embryo: 2n
- Endosperm: 5n
- Integuments: 2n
- Egg: n
- Pollen grain: n

Thus, the answer to the question is that the endosperm will be 5n.