Ontario Grade 9 Science Class Practice Exam

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What is an ecological niche?

  1. The amount of energy that moves from one feeding level to another in a food web

  2. A diagram that shows the energy flow between organisms

  3. A specific role of a species within an ecosystem, including its use of resources, and relationships with other species.

  4. Where an organism lives

The correct answer is: A specific role of a species within an ecosystem, including its use of resources, and relationships with other species.

An ecological niche refers to the specific role or position of a species within an ecosystem, which includes how it utilizes resources and interacts with other species. Option A is incorrect because it describes the flow of energy, rather than a niche. Option B is incorrect because it describes a diagram, rather than a niche. Option D is incorrect because it only refers to the location of an organism, rather than its role within an ecosystem.

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