Complementary chromatic adaptation' is associated with Option 1 Blue green algae Option 2 Eubacteria Option 3 Mycoplasma Option 4 All of these

Options

A. Blue green algae
B. Eubacteria
C. Mycoplasma
D. All of these

Answer

To solve the question "Complementary chromatic adaptation' is associated with," we will analyze each option step by step.

### Step-by-Step Solution:

1. **Understand the Concept**:
- Complementary chromatic adaptation refers to the ability of certain organisms to adjust their pigment composition in response to different light conditions to maximize photosynthesis. This is particularly relevant for organisms that rely on light for energy.

2. **Analyze Option 1 - Blue Green Algae**:
- Blue green algae, also known as cyanobacteria, are known for their ability to perform photosynthesis. They possess phycobilisomes, which are light-harvesting complexes that allow them to capture light efficiently. They can alter their pigment composition to adapt to varying light conditions, which is the essence of complementary chromatic adaptation.

3. **Analyze Option 2 - Eubacteria**:
- Eubacteria is a broad category that includes many types of bacteria, not all of which have the ability to perform photosynthesis or exhibit complementary chromatic adaptation. Therefore, this option does not specifically relate to the concept.

4. **Analyze Option 3 - Mycoplasma**:
- Mycoplasma are a type of bacteria that lack a cell wall and have a parasitic or saprophytic mode of nutrition. They do not perform photosynthesis and thus do not exhibit complementary chromatic adaptation.

5. **Analyze Option 4 - All of These**:
- Since only blue green algae (cyanobacteria) exhibit the specific characteristic of complementary chromatic adaptation, this option is incorrect.

6. **Conclusion**:
- Based on the analysis, the correct answer is **Option 1: Blue Green Algae**.

### Final Answer:
**The correct answer is Option 1: Blue Green Algae.**