Question

Assertion (A): Earthworms are sensitive to light.
Reason (R): It has eyes but still can sense light through light sensitive cells (olfactory - receptors) present in their skin.

• A. Both A and R are false.
• B. A is true but R is false.
• C. Both A and R are true and R is the correct explanation of A.
• D. Both A and R are true but R is NOT the correct explanation of A.

Answer 1

The correct option is B

A is true but R is false.

Nocturnality of Earthworms :
Earthworms are sensitive to light. It has no eyes but can sense light through light sensitive cells (Photo-receptors) present in their skin.

• They give the skin the capacity to detect light and changes in light intensity.
• They react negatively to bright light (Photophobic). It remains in its burrow during the day to avoid light