HiSET Science Test Prep

Category - HiSET Science Practice Test Questions

No two species can occupy the same ___________.
  1. Population
  2. Niche
  3. Ecosystem
  4. Niche
  5. Biome
Explanation
Answer: B, Niche. The niche is the specific role a group of one species in an area. If two groups share a niche, competition ensues.

Key Takeaway: In ecology, smaller units combine to form larger ones. A group of a single species is a population, and groups of populations exist in a community. The niche defines the role each population plays in a community. The niche defines every aspect of an organism, including lifespan, size, morphology, and place in the food chain.
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