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 determine the correct option regarding the haploid ploidy of sexual structures formed in fungi, we need to analyze each of the given options.

1. **Ascospore**: This is a spore produced in an ascus, which is a sac-like structure in ascomycete fungi. Ascospores are haploid.

2. **Oospore**: This is a thick-walled resting spore formed by the fusion of gametes in certain fungi, particularly in the Oomycetes. Oospores are diploid.

3. **Basidiospore**: These are produced by basidiomycete fungi and are formed on a structure called a basidium. Basidiospores are haploid.

4. **Zoospore**: These are motile spores that are produced by some fungi and are haploid.

5. **Zygospore**: This is a thick-walled resting spore formed by the fusion of two gametes in zygomycete fungi. Zygospores are diploid.

6. **Planospore**: This term is not commonly used in mycology, but if it refers to a type of spore, it is generally considered haploid.

7. **Planogamete**: These are gametes that can move, and they are haploid.

Now, let's summarize the haploid/diploid nature of each structure:

- **Ascospore**: Haploid
- **Oospore**: Diploid
- **Basidiospore**: Haploid
- **Zoospore**: Haploid
- **Zygospore**: Diploid
- **Planospore**: Likely haploid
- **Planogamete**: Haploid

From this analysis, the correct options with respect to haploid ploidy are **Ascospore, Basidiospore, Zoospore, Planospore, and Planogamete**.

### Final Answer:
The haploid structures formed in fungi are:
1. Ascospore
2. Basidiospore
3. Zoospore
4. Planospore
5. Planogamete