Assertion(A): Ecology is a thread that gives us a holistic perspective to Biology.
Reason(R): The essence of biological understanding is to know how organisms, while remaining an individual, interact with other organisms and physical habitats as a group.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.