Which of the following is a character of rhodophyceae

Options

A. Major pigments are chl a and b
B. Commonly called brown algae
C. Stored food is mannitol and laminarin
D. Flagella are absent

Answer

To determine which of the following is a character of Rhodophyceae (red algae), let's analyze the provided options step by step:

1. **Understanding Rhodophyceae**:
- Rhodophyceae, commonly known as red algae, are characterized by their red pigments, primarily phycoerythrin, which gives them their distinctive color.

2. **Analyzing the Options**:
- **Option A: Major pigments of chlorophyll A and B**:
- This statement is incorrect for Rhodophyceae. While they do have chlorophyll A, they do not have chlorophyll B. Instead, they contain chlorophyll A and other pigments like phycoerythrin and phycocyanin.

- **Option B: Commonly called as brown algae**:
- This is also incorrect. Brown algae belong to a different group known as Phaeophyceae. Rhodophyceae are specifically referred to as red algae.

- **Option C: Store food in mannitol and laminarin**:
- This statement is incorrect as well. Mannitol and laminarin are storage forms of food found in brown algae (Phaeophyceae). Rhodophyceae primarily store food as floridean starch.

- **Option D: Flagella are absent**:
- This statement is correct. Rhodophyceae do not have flagella at any stage of their life cycle.

3. **Conclusion**:
- The correct answer to the question is **Option D: Flagella are absent**.