Male gametes in red algae are called ………..

Answer

**Step-by-Step Solution:**

1. **Identify the Male Gametes in Red Algae:**
- In red algae, the male gametes are specifically referred to as "Spermatia."

2. **Understand the Characteristics of Spermatia:**
- Spermatia are non-motile gametes, meaning they do not have the ability to move or swim.

3. **Relation to Mono Spores:**
- Spermatia are categorized as mono spores, which indicates that they are produced as single units rather than in clusters.

4. **Fertilization Process:**
- Due to their non-motility, Spermatia cannot reach the female gametes on their own. Therefore, they require an external agent (such as water currents or other organisms) to facilitate fertilization.

5. **Conclusion:**
- In summary, the male gametes in red algae are called Spermatia, which are non-motile and need assistance for fertilization.

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