Sexual reproduction in fungi in which flagellated gametes differentiate and fuse is known as

Options

A. spermatogamy
B. planogametic copulation
C. gametangial copulation
D. gametangial contact

Answer

**Step-by-Step Solution:**

1. **Understanding Sexual Reproduction in Fungi**: Sexual reproduction in fungi involves the fusion of gametes. In fungi, this process can occur through various methods depending on the type of fungi.

2. **Identifying the Key Terms**: The question specifically mentions "flagellated gametes." This indicates that we are looking for a type of sexual reproduction where the gametes are motile and have flagella.

3. **Stages of Sexual Reproduction**: The sexual reproduction in fungi generally occurs in three stages:
- **Plasmogamy**: The fusion of two protoplasts (cell contents) from different mating types.
- **Karyogamy**: The fusion of the haploid nuclei to form a diploid zygote.
- **Meiosis**: The process where the diploid zygote undergoes division to produce haploid spores.

4. **Types of Gamete Fusion**:
- **Spermatogamy**: Involves male gametes (spermatia) and is not the focus here.
- **Gametangial Copulation**: Involves the fusion of gametangia, which is not relevant to flagellated gametes.
- **Gametangial Contact**: Similar to gametangial copulation but involves contact through walls, not relevant here.
- **Planogametic Copulation**: This is the process where two naked, motile gametes (flagellated) fuse together.

5. **Conclusion**: Given that the question specifically asks for sexual reproduction involving flagellated gametes, the correct term is **Planogametic Copulation**.

**Final Answer**: Sexual reproduction in fungi in which flagellated gametes differentiate and fuse is known as **Planogametic Copulation**.

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