Fact 1: Roundworms may be free-living or parasitic.

Fact 2: Nematodes are microscopic roundworms.

Given the two facts above, answer the question "What may be free-living or parasitic?" with the following options: 
- insects
 - parasites
 - bushes
 - nematodes
 - trees
 - bacteria
 - animals
 - Most plants


 

    nematodes     