UPSC CSE Prelims
Question 31
Which one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms?
View correct answer and explanation
Correct answer: B
Correct Option: B
Explanation: An ecological niche includes not merely where an organism lives, but how it uses resources and interacts with the biological community.
Option-wise Analysis:
A: Incorrect - Wrong: an ecotone is the transition zone between two ecosystems.
B: Correct - Correct: niche describes a species’ ecological function, resources and environmental requirements.
C: Incorrect - Wrong: habitat describes a living place, not the full functional role.
D: Incorrect - Wrong: home range is the area an animal commonly moves through.