During gamete formation in fungi

Options

A. Haploid gametes results from mitosis
B. Haploid gametes results from meiosis
C. Diploid gametes result from mitosis
D. Diploid gametes result from meiosis

Answer

### Step-by-Step Text Solution:

1. **Understanding Fungi and Gamete Formation**:
- Fungi are heterotrophic organisms that reproduce both sexually and asexually. In sexual reproduction, gamete formation is crucial.

2. **Types of Gametes**:
- Fungi produce haploid gametes. This means that each gamete contains one set of chromosomes.

3. **Process of Gamete Formation**:
- The formation of gametes in fungi involves two main processes: **Plasmogamy** and **Karyogamy**.
- **Plasmogamy**: This is the fusion of the cytoplasm of two gametes (which can be motile or non-motile).
- **Karyogamy**: This is the fusion of the nuclei of the two gametes after plasmogamy.

4. **Formation of Zygote**:
- Following karyogamy, a diploid zygote is formed. This zygote contains two sets of chromosomes (one from each parent).

5. **Meiosis in the Zygote**:
- The diploid zygote undergoes meiosis, which is a reductional division. This process reduces the chromosome number by half, resulting in haploid spores.

6. **Conclusion**:
- Therefore, during gamete formation in fungi, haploid gametes result from meiosis, not mitosis. Mitosis is an equational division and does not produce gametes.

### Final Answer:
- The correct option is: **Haploid gametes result from meiosis**.