Most common special asexual reproductive structure seen in members of algae is

Options

A. Zoospore
B. Conidia
C. Sporangiospore
D. Gemmules

Answer

**Step-by-Step Solution:**

1. **Understand the Question**: The question asks for the most common special asexual reproductive structure found in algae. We need to evaluate the given options: zoospore, conidia, sporangiospore, and gemmules.

2. **Analyze Each Option**:
- **Zoospore**: This is a motile spore that is commonly found in algae. It is capable of movement, which is a characteristic feature of this type of spore.
- **Conidia**: These are asexual spores that are primarily associated with fungi, particularly in the genus Penicillium. They are not typically found in algae.
- **Sporangiospore**: Similar to conidia, sporangiospores are also a type of asexual spore found in fungi. They do not represent a structure commonly associated with algae.
- **Gemmules**: These are asexual reproductive structures found in certain sponges, particularly in the genus Porphyra. They are not related to algae.

3. **Identify the Correct Answer**: Among the options provided, the zoospore is the only structure that is specifically associated with algae. The other options (conidia, sporangiospores, and gemmules) are primarily linked to fungi or sponges.

4. **Conclusion**: Therefore, the most common special asexual reproductive structure seen in members of algae is the **zoospore**.

**Final Answer**: Zoospore

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