What is a worm cast?

What is a worm cast?

• A. Nutrient-rich organic matter excreted by earthworms, enhancing soil fertility
• B. A shell
• C. A species of fish
• D. A type of worm

Answer: (A)

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.