Spermatia are male gametes of :-

Options

A. Red algae
B. Diatoms
C. Spermatophyta
D. Euglena

Answer

**Step-by-Step Solution:**

1. **Understanding Spermatia**: Begin by defining what spermatia are. Spermatia are male gametes that are typically non-motile and colorless.

2. **Identifying the Organism**: Next, we need to identify which group of organisms produces spermatia. The options provided are:
- Red algae
- Diatoms
- Spermatophyta
- Gibberella

3. **Analyzing Each Option**:
- **Red Algae**: Known to produce spermatia as their male gametes.
- **Diatoms**: These are a group of algae but do not produce spermatia.
- **Spermatophyta**: This group includes seed plants, which have different types of male gametes (pollen grains).
- **Gibberella**: This is a genus of fungi and does not produce spermatia.

4. **Conclusion**: Based on the analysis, the correct answer is that spermatia are the male gametes of red algae.

5. **Final Answer**: Therefore, the answer to the question "Spermatia are male gametes of:" is **Red Algae**.

---