In Phaeophyceae, the spores (zoospores) are

Options

A. pyriform and bear 2 flagella (one longitudinal and another transverse )
B. pear-shaped and bear 2 flagella that are laterally attached
C. pyriform and bear 2-8, equal and apical flagella
D. pear-shaped and bear 2-8 , equal and apical flagella

Answer

To solve the question regarding the characteristics of zoospores in Phaeophyceae, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Group**: Recognize that Phaeophyceae is a class of brown algae, which are known for their complex life cycles and reproductive strategies.

2. **Understand Zoospores**: Zoospores are a type of asexual reproductive cell that can move due to the presence of flagella. In Phaeophyceae, these zoospores are crucial for their reproduction.

3. **Shape of Zoospores**: The question asks about the shape of the zoospores. In Phaeophyceae, the zoospores are described as "pear-shaped."

4. **Flagella Characteristics**: The next part of the question concerns the flagella. It is important to note that Phaeophyceae zoospores typically have two flagella.

5. **Flagella Arrangement**: The arrangement of the flagella is also significant. In Phaeophyceae, the two flagella are laterally attached to the zoospore, which means they are positioned on the sides rather than at the ends.

6. **Review Options**: Now, we can review the options provided in the question:
- Pyriform and bear 2 flagella, one longitudinal and other transverse (Incorrect)
- Pear shaped and bear 2 flagella that are laterally attached (Correct)
- Pyriform and bear 2 to 8 equal and apical flagella (Incorrect)
- Pear shaped and bear 2 to 8 equal and apical flagella (Incorrect)

7. **Conclusion**: Based on the characteristics of the zoospores in Phaeophyceae, the correct answer is that they are "pear-shaped and bear 2 flagella that are laterally attached."

### Final Answer:
The zoospores in Phaeophyceae are pear-shaped and bear 2 flagella that are laterally attached.