Which of the following is NOT listed as a part of an organism's niche?

• A. Diet
• B. Migration pattern
• C. Shelter
• D. Reproduction strategy

Answer: (B)

A species’ niche describes how it uses resources and fits into its environment: what it eats, where it lives and finds shelter, and how it reproduces. These elements define the organism’s role and requirements within the ecosystem. Migration pattern, while it affects where and when resources are gathered, is a behavior that helps the organism meet those needs but isn’t itself a defining part of the niche in this context. So, among the options, migration pattern is not listed as part of an organism’s niche. The other items—diet, shelter, and reproduction strategy—directly describe the organism’s resource use and life processes within its environment.