Which one of the following is the ultimate distributional unit within which a species is restrained by the limitations of its physical structure and physiology?
Correct answer: A. Niche
- A. Niche
- B. Biome
- C. Ecosystem
- D. Habitat
Explanation
The given statement is the definition of Niche given by Grinnell. Therefore opt A is the right choice here.
This question appeared on the UHS MDCAT 2014 paper, which you can sit online with every answer explained.
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About Ecosystems
An ecosystem consists of organisms interacting with one another and with abiotic factors such as light, water, soil and temperature. The topic covers populations and communities, food chains and webs, trophic levels, ecological pyramids, energy flow, nutrient cycles and ecological succession.
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