Read the following statements and choose correct ones- (A) Carotenoids protect chlorophyll a from photooxidation, (B) Dark reactions are not directly light driven, ©Chlorophyll a molecule shows maximum absorption in red and blue regions of the visible spectrum of light, (D) Light harvesting complexes are composed of hundreds of pigment molecules bound to lipids only.

Options

A. A,B &C
B. B,D &C
C. A,C &D
D. D,B &A

Answer

To solve the question, we need to evaluate each statement provided and determine whether it is correct or incorrect.

### Step-by-Step Solution:

1. **Evaluate Statement (A):**
- "Carotenoids protect chlorophyll a from photooxidation."
- **Analysis:** This statement is true. Carotenoids are accessory pigments that help protect chlorophyll a from damage caused by excessive light, which can lead to photooxidation.

2. **Evaluate Statement (B):**
- "Dark reactions are not directly light driven."
- **Analysis:** This statement is also true. The dark reactions (Calvin cycle) do not require light directly; instead, they utilize the ATP and NADPH produced during the light-dependent reactions.

3. **Evaluate Statement (C):**
- "Chlorophyll a molecule shows maximum absorption in red and blue regions of the visible spectrum of light."
- **Analysis:** This statement is true. Chlorophyll a absorbs light most efficiently in the red (around 665-680 nm) and blue (around 430-450 nm) regions of the spectrum.

4. **Evaluate Statement (D):**
- "Light harvesting complexes are composed of hundreds of pigment molecules bound to lipids only."
- **Analysis:** This statement is incorrect. Light harvesting complexes consist of pigment molecules bound to both lipids and proteins. The presence of proteins is crucial for the functioning of these complexes.

### Conclusion:
The correct statements are (A), (B), and (C). Therefore, the answer is A, B, and C.