Select the correct match of of algal class and its characteristic flagellation.

Options

A. Chlorophyceae- 2-8 equal, apical
B. Phaeophyceae- 2, unequal,lateral
C. Rhodophyceae- Absent
D. all of these.

Answer

To solve the question of matching algal classes with their characteristic flagellation, we will analyze the flagellation characteristics of three major classes of algae: Chlorophyceae, Phaeophyceae, and Rhodophyceae.

### Step-by-Step Solution:

1. **Identify Algal Classes**:
- We are considering three classes of algae: Chlorophyceae (green algae), Phaeophyceae (brown algae), and Rhodophyceae (red algae).

2. **Understand Flagellation Types**:
- There are two types of flagellation:
- **Isochron**: Flagella are equal in size.
- **Heterochont**: Flagella are unequal in size.

3. **Analyze Chlorophyceae**:
- **Number of Flagella**: Chlorophyceae have 2 to 8 flagella.
- **Position**: The flagella are anterior (or apical).
- **Type**: The flagella are isochron (equal in size).

4. **Analyze Phaeophyceae**:
- **Number of Flagella**: Phaeophyceae have 2 flagella.
- **Position**: The flagella are inserted laterally on the body.
- **Type**: The flagella are heterochont (unequal in size).

5. **Analyze Rhodophyceae**:
- **Number of Flagella**: Rhodophyceae have no flagella.
- **Type**: Since there are no flagella, this characteristic is absent.

6. **Match Options**:
- **Option A**: Describes Chlorophyceae correctly as having 2 to 8 flagella, anterior position, and isochron type.
- **Option B**: Describes Phaeophyceae correctly as having 2 flagella, lateral position, and heterochont type.
- **Option C**: Describes Rhodophyceae correctly as having no flagella.

7. **Conclusion**:
- All the statements about the algal classes and their flagellation characteristics are correct. Therefore, the correct option is **"All of these"**.