Ecosystem components — A/L Biology

How do I practise Ecosystem components?

1 question with a worked solution

1. What ecological concept defines the total functional role, resource utilization, and multidimensional space occupied by a species within its biotic and abiotic community?
   1. A) Physical habitat
   2. B) Ecological niche
   3. C) Trophic level
   4. D) Ecological biome
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   Correct answer: B) Ecological niche

   An ecological niche encompasses both the physical habitat and the complete functional role of an organism—what it eats, how it modifies its environment, its tolerance ranges, and its interactions with other species (Hutchinson's multidimensional hypervolume).

   Show worked solution

   Step 1: Differentiate habitat vs niche: Habitat = physical address; Niche = address + profession/role in ecosystem. Step 2: Functional role + resource interactions = Ecological niche. Answer: Ecological niche.
   Modelled on: the A/L Biology examination pattern

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Where does Ecosystem components fit in the syllabus?

Year 2 · Term 2