Question

Which among the following is/are a free-living roundworm?

• A. Strongyloides stercoralis
• B. Rhabditis
• C. Loa
• D. All of the above

Answer 1

The correct option is D All of the above

Free-living worm species do not live on land, but instead, live in marine or freshwater environments, or underground by burrowing. Free living organisms are not directly dependent on another organism for survival whereas parasitic organisms are directly dependent on other organisms for their survival.

• Strongyloides stercoralis is a unique nematode having both parasitic and free-living cycles
• Rhabditis bovis are tiny nematodes that spend their entire life cycle in the ear. These animals are free living.

So, the correct answer is 'All of the above'.