Choose the correct option w.r.t haploid ploidy of sexual structures formed in fungi.
`1.` Ascospore `2`. Oospore
`3`. Basidiospore `4`. Zoospore
`5`. Zygospore `6`. Planospore
`7`. Planogamete

Options

A. `5,4` and `7`
B. `1,2,4` and `5`
C. `1,3,4` and `7`
D. `1,3` and `7`

Answer

To solve the question regarding the haploid ploidy of sexual structures formed in fungi, we will analyze each option provided:

1. **Ascospore**:
- Ascospore is a type of spore produced in the Ascomycete fungi. It is haploid (n) and develops from the meiotic division of an ascus.
- **Conclusion**: Ascospore is haploid.

2. **Oospore**:
- Oospore is formed after the fertilization of an egg cell by a male gamete, resulting in a diploid (2n) zygote.
- **Conclusion**: Oospore is diploid.

3. **Basidiospore**:
- Basidiospores are produced by Basidiomycete fungi and are also haploid (n). They arise from the meiotic division of a basidium.
- **Conclusion**: Basidiospore is haploid.

4. **Zoospore**:
- Zoospores are a type of motile spore that can be produced by some fungi, but they are typically diploid (2n).
- **Conclusion**: Zoospore is diploid.

5. **Zygospore**:
- Zygospores are formed from the fusion of gametes and are diploid (2n).
- **Conclusion**: Zygospore is diploid.

6. **Planospore**:
- Planospores are generally haploid (n) and can be produced by some fungi.
- **Conclusion**: Planospore is haploid.

7. **Planogamete**:
- Planogametes are motile gametes that are haploid (n) and participate in sexual reproduction.
- **Conclusion**: Planogamete is haploid.

### Summary of Findings:
- **Haploid Structures**: Ascospore, Basidiospore, Planospore, Planogamete.
- **Diploid Structures**: Oospore, Zoospore, Zygospore.

### Correct Options:
The correct options with respect to haploid ploidy of sexual structures formed in fungi are:
- **1. Ascospore**
- **3. Basidiospore**
- **6. Planospore**
- **7. Planogamete**

### Final Answer:
The correct answer is **options 1, 3, 6, and 7**.

---