Ontario Grade 9 Science Class Practice Exam

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What does biodiversity refer to?

  1. The variety of life in the world or in a particular habitat or ecosystem.

  2. A group of interdependent organisms living together.

  3. The study of water on Earth.

  4. The outer layer of Earth.

The correct answer is: The variety of life in the world or in a particular habitat or ecosystem.

B This option refers to the definition of a community, rather than the overall variety of life in a given area. C: This option is too specific, as biodiversity encompasses more than just the study of water. D: This option does not relate to the definition of biodiversity, as it refers to the physical makeup of the planet rather than the variety of life on it.

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