Question

The heartworms that can accumulate within the hearts of dogs and other mammals have a pseudocoelom, an alimentary canal (i.e., digestive system), an unsegmented body, and an outer covering that is occasionally shed. To which major clade of animals does the heartworm belong?

Answer 1

The correct answer is Nematoda.

Step-by-step explanation:

This kind of worms belong to the:

• Kingdom: Animalia
• Clade: Nematoida
• Phylum: Nematoda

The Dirofilaria immitis or also known as Hearthworm is a parasitic roundworm spread from host to host through mosquito bite, they have, as mentioned in the excerpt from the question, a pseudocoelom, an alimentary canal an unsegmented body and an outer covering, therefore this kind of worms is classified the Nematoida clade.