Direction of light is detected by

Options

A. Phytochrome
B. Amyloplasts
C. Carotenoids
D. Plant receptors.

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about which component in plants detects the direction of light.

2. **Analyzing the Options**:
- **Option A: Phytochrome**:
- Phytochromes are photoreceptors in plants that are sensitive to red light.
- They do not detect the direction of light, only its presence or absence.
- Therefore, this option is incorrect.

- **Option B: Amyloplasts**:
- Amyloplasts are organelles responsible for storing starch in plants.
- They do not play a role in light detection.
- Thus, this option is also incorrect.

- **Option C: Carotenoids**:
- Carotenoids are pigments found in some organisms that are crucial for phototaxis, which is the movement towards or away from light.
- They help in detecting the direction of light, making this option correct.

- **Option D: Plant Receptors**:
- Plant receptors are involved in hormone signaling and do not have a role in light detection.
- Therefore, this option is incorrect.

3. **Conclusion**: After analyzing all the options, the correct answer is **Option C: Carotenoids**, as they are responsible for detecting the direction of light.