You are presented with the question "what kind of digestive tracks do nematoda have?" and the following answer choices: 
- homogenous
 - complete
 - heat or cold
 - ligt
 - food
 - grow
 - organ
 - allow growth

Now knowing that roundworms make up the phylum Nematoda and roundworm Roundworms have complete digestive tracks, choose the best answer.


 

  complete       