Special type of red pigment present in the eye-spot of Euglena and Crustacea is called

Options

A. Phycoerythrin
B. Astaxanthin
C. Carotene
D. Xanthophyll

Answer

To solve the question regarding the special type of red pigment present in the eye-spot of Euglena and Crustacea, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organisms**: The question mentions two specific organisms: Euglena and Crustacea. It is important to know that both of these have eye-spots that contain pigments.

2. **Understand the Role of Pigments**: Pigments are substances that give color to organisms and can play a role in photosynthesis or protection against UV light. In this case, we are looking for a red pigment.

3. **Review the Options**: The options provided are:
- Phyco
- Erythrin
- Astaxanthin
- Carotene
- Xanthophyll

4. **Analyze Each Option**:
- **Phyco**: This is a prefix often associated with pigments found in algae, but it is not a specific pigment itself.
- **Erythrin**: This is a red pigment, but it is not specifically known for its presence in Euglena or Crustacea.
- **Astaxanthin**: This is a red pigment known to be present in the eye-spots of both Euglena and Crustacea.
- **Carotene**: This is an orange pigment found in fruits and vegetables, not specifically in the eye-spots of the mentioned organisms.
- **Xanthophyll**: This is a yellow pigment, also not related to the eye-spots of Euglena and Crustacea.

5. **Select the Correct Answer**: Based on the analysis, the correct answer is **Astaxanthin**, as it is specifically known to be present in the eye-spots of Euglena and Crustacea.

### Final Answer:
The special type of red pigment present in the eye-spot of Euglena and Crustacea is called **Astaxanthin**.