Question

Assertion (A): Organisms such as hydrilla, mussels, flatworms live in the bottom regions of the pond.
Reason (R): Organisms die easily because of absence of light at bottom of the pond.

• A. Both A and R are correct and R is the correct explanation of A.
• B. Both A and R are correct but R is not a correct explanation of A.
• C. A is correct but R is incorrect.
• D. Both A and R are incorrect.

Answer 1

The correct option is C A is correct but R is incorrect.

Hydrilla, mussels and flatworms are generally found at the bottom of a pond. Even though light is scarce in this region, there is plenty of food in the form of dead and decaying matter. This helps in survival of these organisms. Hence, the reason is incorrect.