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 "Select an incorrect statement for algae," we will analyze each of the provided options step by step.

### Step-by-Step Solution:

1. **Evaluate the first option: "Agar is obtained from Gelidium and Gracilaria."**
- **Analysis:** This statement is true. Agar is indeed derived from certain species of red algae, specifically Gelidium and Gracilaria. Therefore, this option is not incorrect.

2. **Evaluate the second option: "Members of Chlorophyceae are unicellular, colonial, or filamentous."**
- **Analysis:** This statement is also true. The members of Chlorophyceae, commonly known as green algae, can exist in various forms, including unicellular, colonial, or filamentous structures. Thus, this option is not incorrect.

3. **Evaluate the third option: "Pyrenoids contain protein besides glycogen."**
- **Analysis:** This statement is incorrect. Pyrenoids are known to contain protein, but they primarily store starch, not glycogen. Therefore, this option is indeed the incorrect statement.

4. **Evaluate the fourth option: "Some algae may store food in the form of oil droplets."**
- **Analysis:** This statement is true. Certain algae do store energy in the form of oil droplets, which is a common characteristic among various algal groups. Thus, this option is not incorrect.

### Conclusion:
The incorrect statement among the options provided is: **"Pyrenoids contain protein besides glycogen."**