Pick out the correct statement W.r.t. The flagella found in a perticular class of algae.

Options

A. In brown algae motile spores have 2-8, equal , lateral flagella
B. In green algae motile cell, have 2 unequal, apical flagella
C. In red algae motile cells have 2-8, equal and apical flagella, few are non-motile
D. In brown algae motile spores are biflagellate few are unequal and lateral.

Answer

To solve the question regarding the flagella found in a particular class of algae, we can follow these steps:

### Step 1: Identify the Classes of Algae
The three main classes of algae are:
- Rhodophyceae (Red algae)
- Chlorophyceae (Green algae)
- Pheophyceae (Brown algae)

### Step 2: Analyze Flagella Characteristics
Next, we need to analyze the characteristics of flagella in each class of algae:
- **Brown Algae (Pheophyceae)**: Motile spores typically have 2-8 unequal lateral flagella.
- **Green Algae (Chlorophyceae)**: Motile cells usually have 2 unequal apical flagella.
- **Red Algae (Rhodophyceae)**: Generally, motile cells are non-motile and may have 2-8 equal or apical flagella, but often flagella are absent in mature forms.

### Step 3: Evaluate the Statements
Now, let’s evaluate the provided statements regarding flagella:
1. **Brown algae**: Chlorophyll pigments A and C are present in red algae, which is incorrect as it refers to red algae, not brown.
2. **Green algae**: Motile cells have 2 unequal apical flagella, which is a correct statement about green algae but does not answer the question.
3. **Red algae**: Motile cells have 2-8 equal and apical flagella, but this is misleading since red algae typically do not have flagella in mature forms.
4. **Brown algae**: Motile spores are biflagellated, unequal, and lateral, which is correct.

### Step 4: Conclusion
Based on the analysis, the correct statement regarding flagella in a particular class of algae is:
**Option 4: In brown algae, motile spores are biflagellated, unequal, and lateral.**