Question

Assertion (A): Ascaris lumbricoides is a facultative anaerobe.
Reason (R): Ascaris performs either aerobic or anaerobic respiration depending on availability of oxygen.

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

Hint:

Facultative anaerobes = survive in both oxygen-rich and oxygen-poor environments.

Answer 1

The Correct Option is A

Ascaris can survive in both aerobic and anaerobic conditions due to its facultative anaerobic nature. It switches between aerobic and anaerobic modes of respiration based on oxygen availability.