Red algae posses

Options

A. Rhodochrome
B. Chlorophyll
C. Chlorophyll and phycobilin
D. Fucoxanthin.

Answer

To answer the question "Red algae possess," we need to analyze the characteristics and pigments found in red algae (Rhodophyta). Here’s a step-by-step breakdown of the solution:

### Step-by-Step Solution:

1. **Identify the Class of Algae**:
- Red algae belong to the class Rhodophyta (or Rhodophyceae).

2. **Key Pigments Present**:
- Red algae are characterized by the presence of specific pigments. The most notable pigment is **phycoerythrin**, which gives red algae their distinctive red color.

3. **Other Pigments**:
- In addition to phycoerythrin, red algae also contain **chlorophyll A** and **chlorophyll D**. These pigments are essential for photosynthesis.

4. **Reserve Food Material**:
- The reserve food material in red algae is **Floridian starch**, which is similar to regular starch but has a more branched structure.

5. **Evaluate the Options**:
- **Rhodochrome**: This is a red mineral, not a pigment, so it is incorrect.
- **Chlorophyll**: While chlorophyll is present in red algae, it is not unique to them, as it is found in all types of algae. Therefore, this option is also incorrect.
- **Chlorophyll and Phycobilin**: This option is correct as it includes both chlorophyll (A and D) and phycobilin (specifically phycoerythrin).
- **Fucosanthin**: This pigment is found in brown algae (Phaeophyceae) and is not present in red algae, making this option incorrect.

6. **Conclusion**:
- The correct answer is that red algae possess **chlorophyll and phycobilin**.

### Final Answer:
Red algae possess **chlorophyll and phycobilin**.

---