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 break it down into the following steps:

### Step-by-Step Solution:

1. **Identify the Group**:
- Phaeophyceae is a class of algae commonly known as brown algae.

2. **Understand the Spores**:
- The spores produced by Phaeophyceae are called zoospores.

3. **Shape of Zoospores**:
- The zoospores in Phaeophyceae are described as pyriform, which means they have a pear-like shape.

4. **Flagella Characteristics**:
- Phaeophyceae zoospores possess two flagella.
- These flagella are unequal in length, meaning one is longer than the other.

5. **Flagella Arrangement**:
- The arrangement of the flagella is specific: one flagellum is positioned longitudinally while the other is transverse.
- This arrangement is crucial for the movement of the zoospore.

6. **Conclusion**:
- Therefore, the correct characteristics of zoospores in Phaeophyceae are that they are pyriform and possess two unequal flagella, with one longitudinal and the other transverse.

### Final Answer:
In Phaeophyceae, the spores (zoospores) are pyriform and have two unequal flagella, one longitudinal and the other transverse.

---