Question

Ascaris is characterised by

• A. Absence of true coelom but presence of metamerism
• B. Presence of neither true coelom nor metamerism
• C. Presence of true coelom but absence of metamerism
• D. Presence of true coelom and metamerism

Answer 1

The correct option is B Presence of neither true coelom nor metamerism

Ascaris is a genus of parasitic nematode worms has a pseudocoelom or a false cavity, whereby tissue derived from the mesoderm only partly lines the fluid-filled body cavity. Metamerism is the property of having repeated segments, which is absent in nematodes.