Ontario Grade 9 Science Class Practice Exam

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Prepare for the Ontario Grade 9 Science Class Exam. Engage with interactive questions and detailed explanations to solidify your knowledge. Enhance your understanding of essential science concepts and boost your confidence for the test!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What organisms are responsible for decomposing matter into nutrients?

Plants and animals
Bacteria and fungi
Insects
Mammals

The correct answer is: Bacteria and fungi

Bacteria and fungi are the two main types of decomposers in an ecosystem. Plants and animals may contribute to decomposition by breaking down matter through grazing or trampling, but they are not primarily responsible for this process. Insects and mammals also play roles in decomposition, but they are not the primary decomposers like bacteria and fungi are.