Which term refers to waste from plants and animals, including dead organisms?

Prepare for the Pre-IB Grade 9 Science Exam with detailed flashcards and multiple-choice questions. Each question is paired with hints and thorough explanations. Ace your test with confidence!

Multiple Choice

Which term refers to waste from plants and animals, including dead organisms?

Explanation:
Detritus refers to waste from plants and animals, including dead organisms. This material includes fallen leaves, wood fragments, feces, and carcasses. Decomposers and detritivores like fungi, bacteria, worms, and some insects break detritus down, recycling nutrients back into the soil and sustaining the detrital food web. Habitat describes the environment where organisms live, organism means a living being, and niche is the role an organism plays in its ecosystem—none of these describe waste, so detritus is the best fit.

Detritus refers to waste from plants and animals, including dead organisms. This material includes fallen leaves, wood fragments, feces, and carcasses. Decomposers and detritivores like fungi, bacteria, worms, and some insects break detritus down, recycling nutrients back into the soil and sustaining the detrital food web. Habitat describes the environment where organisms live, organism means a living being, and niche is the role an organism plays in its ecosystem—none of these describe waste, so detritus is the best fit.

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