Competition between species will be greatest if they attempt to occupy the same___________?
Correct answer: D. Niche
- A. Ecosystem
- B. Community
- C. Habitat
- D. Niche
Explanation
Competition is greatest when species occupy the same ecological niche because they require the same resources and perform similar roles in the ecosystem. A habitat is merely the physical place where an organism lives and may contain many species with different resource requirements. Students may choose c by treating habitat and niche as synonyms, but niche includes the organism's resource use and ecological role.
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About Concept of Evolution
Evolution is the heritable change in populations over generations, driven by mutation, recombination, natural selection, genetic drift and reproductive isolation. Questions examine variation, adaptation, survival and reproduction, speciation, fossil and anatomical evidence, and the difference between individual acclimatization and evolutionary change in a population.
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