Select an incorrect statement for algae

Options

A. Agar is obtained from Gelidium and Gracilaria
B. Members of chlorophyceae are unicellular, colonial or filamentous
C. Pyrenoids contain protein besides glycogen
D. Some algae may store food in the form of oil droplets

Answer

To solve the question of selecting an incorrect statement regarding algae, we will analyze each of the provided statements step by step.

### Step-by-Step Solution:

1. **Statement Analysis**:
- **Statement 1**: "Agar is obtained from Gelidium and Gracilaria."
- **Analysis**: Gelidium and Gracilaria are indeed types of red algae from which agar is extracted. This statement is correct.

2. **Statement 2**: "Members of Chlorophyceae are green, colonial, and filamentous."
- **Analysis**: Chlorophyceae is the class of green algae, which can be unicellular, colonial, or filamentous. This statement is also correct.

3. **Statement 3**: "Pyrenoids contain protein besides glycogen."
- **Analysis**: Pyrenoids are structures found in the chloroplasts of green algae that store starch and proteins. However, the statement incorrectly mentions "glycogen" instead of "starch." Therefore, this statement is incorrect.

4. **Statement 4**: "Some algae may store food in the form of oil droplets."
- **Analysis**: This statement is correct as some algae do store their food in the form of oil droplets.

### Conclusion:
The incorrect statement regarding algae is **Statement 3**: "Pyrenoids contain protein besides glycogen."

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