All of the following statements regarding nematode phylogeny are true except one.
A)All nematodes that are plant or animal parasites belong to a single clade.
B)The old classification based on two classes is incorrect.Molecular analysis suggests that there are three nematode clades.
C)Ancestral nematodes were probably marine organisms.
D)Freshwater nematodes are found in all three clades.Marine nematodes are found in two of the three clades.

Question

Quizplus · Accepted Answer

This statement is false. While many plant and animal parasite nematodes do belong to a clade known as Chromadorea, not all of them do. There are nematodes that parasitize plants and animals that belong to other clades such as Enoplea.

All of the Following Statements Regarding Nematode Phylogeny Are True