Which organism is a small, often invisible worm that can exist in soil?

Which organism is a small, often invisible worm that can exist in soil?

• A. Nematode
• B. Parasite
• C. Perennial
• D. Phloem

Answer: (A)

Nematodes are microscopic, threadlike worms that live in soil. They’re often invisible to the naked eye, which matches the description well. In turf, some nematodes are plant pests attacking roots, while others feed on fungi or bacteria and help with soil health, but the key point here is they are tiny soil-dwelling worms. The other terms don’t describe an organism living in soil: a parasite is a broad category of organisms that live on or in another host; a perennial refers to a plant that lives for more than two years; phloem is plant tissue that transports sugars. So the organism described is a nematode.

Nematodes are microscopic, threadlike worms that live in soil. They’re often invisible to the naked eye, which matches the description well. In turf, some nematodes are plant pests attacking roots, while others feed on fungi or bacteria and help with soil health, but the key point here is they are tiny soil-dwelling worms. The other terms don’t describe an organism living in soil: a parasite is a broad category of organisms that live on or in another host; a perennial refers to a plant that lives for more than two years; phloem is plant tissue that transports sugars. So the organism described is a nematode.