Presence of true coclom and metamerism (metamerisation)
Absence of true coclom but presence of metamerism
Presence of neither true coclom nor metamerism
Presence of true coclom but absence of metamerism
Solution
Ascaris belong to the phylum Nematoda of superphylum Aschelminthes. They have a cylindrical body without showing any metamerism, a pseudocoel (false coelom) and a complete digestive tract lined by endodermal epithelium. The cuticle covering the body surface bears minute transverse striations giving a pseudo-segmented appearance of the worm.