The animals that are awake at night can see objects

Options

A. in red colour only
B. in all colours
C. only in black and white colours
D. in green colour only

Answer

### Step-by-Step Solution:

1. **Identify Nocturnal Animals**: The question refers to animals that are active during the night, known as nocturnal animals. Examples include owls, bats, and raccoons.

2. **Understand Vision Mechanism**: Nocturnal animals have specialized adaptations for seeing in low light conditions. They primarily rely on rod cells in their eyes, which are sensitive to light and allow them to see in the dark.

3. **Role of Rod Cells**: Rod cells are responsible for vision in dim light and do not detect color. Instead, they help in seeing shapes and movements. In contrast, cone cells are responsible for color vision but are less effective in low light.

4. **Color Perception**: Since nocturnal animals primarily use rod cells for their vision, they are generally unable to see colors as humans do. They can see in shades of gray, which means they perceive the world mainly in black and white.

5. **Evaluate Options**: Given the options:
- Red color only
- All colors
- Only in black and white
- Green color only

The correct answer is "only in black and white," as this aligns with the vision capabilities of nocturnal animals.

### Final Answer:
The animals that are awake at night can see objects only in black and white.

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