Question
Biology Question on organisms and populations
Ecological niche is
A
the surface area of the ocean
B
an ecologically adapted zone
C
the physical position and functional role of a species within the community
D
formed of all plants and animals living at the bottom of a lake
Answer
the physical position and functional role of a species within the community
Explanation
Solution
Niche' literally means specific place. However, in ecology, it is generally used for the habitat as well as role of a species or population in a community. To understand niche, consider an example of rabbit. 
Every interaction of rabbit with its environment is a part of its niche.