What is a worm cast?

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Study for the Academic Decathlon Science Test with expert-curated flashcards and multiple-choice questions. Enhance your understanding with clear hints and explanations. Prepare for success on your exam!

Multiple Choice

What is a worm cast?

Explanation:
Worm castings are the nutrient-rich organic matter excreted by earthworms as they digest soil and organic material. This material adds plant-available nutrients and improves soil structure, porosity, and microbial activity, all of which boost soil fertility and help with water drainage. So, the nutrient-rich organic matter excreted by earthworms best describes a worm cast. The other options—being a shell, a fish, or a type of worm—are not produced by earthworms as waste and don’t describe worm casts.

Worm castings are the nutrient-rich organic matter excreted by earthworms as they digest soil and organic material. This material adds plant-available nutrients and improves soil structure, porosity, and microbial activity, all of which boost soil fertility and help with water drainage. So, the nutrient-rich organic matter excreted by earthworms best describes a worm cast. The other options—being a shell, a fish, or a type of worm—are not produced by earthworms as waste and don’t describe worm casts.

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