Assertion : Owls have more rods while man has more cones in their retinae.
Reason : Owls are nocturnal while man is diurnal in their activity.

Options

A. If both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.
B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
C. If Assertion is true but Reason is false.
D. If both Assertion and Reason are false.

Answer

To solve the question regarding the assertion and reason, we can follow these steps:

### Step 1: Understand the Assertion
The assertion states that "Owls have more rods while man has more cones in their retinae."
- **Rods** are photoreceptors in the retina that are sensitive to low light levels and are responsible for night vision.
- **Cones** are photoreceptors that function best in bright light and are responsible for color vision and detail.

### Step 2: Understand the Reason
The reason provided is "Owls are nocturnal while man is diurnal in their activity."
- **Nocturnal** means active during the night, which is true for owls as they hunt and see well in low light conditions.
- **Diurnal** means active during the day, which is true for humans as they are adapted to see well in bright light.

### Step 3: Analyze the Relationship
The assertion and reason are related:
- The presence of more rods in owls allows them to see better in the dark, which aligns with their nocturnal nature.
- The presence of more cones in humans allows them to see better in daylight, which aligns with their diurnal nature.

### Step 4: Determine the Truth Value
Both the assertion and the reason are true, and the reason correctly explains the assertion. Therefore, we conclude that:
- The assertion is true.
- The reason is true.
- The reason is a correct explanation of the assertion.

### Step 5: Choose the Correct Option
Based on the analysis:
- The correct option is that both the assertion and reason are true, and the reason is the correct explanation of the assertion.

### Final Answer
Both the assertion and reason are true, and the reason is the correct explanation of the assertion.

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