Coelom derived from blastocoel is known as

From the given set of statement,identify the correct ones. I. Rediae, cercaria, miracidium and bipinnaria are the larval stages of flatworms. II. Mehlis' gland in tapeworm is associated with reproduction III. Cestodes are distinguished from other flatworm by the absence of digestive system IV. Pseudocolom is primary coelum derived from blastocoel of the embryo and occurs in Taenia.

The relationship between the two organisms or species in which both the partners derive benefit from each other is known as

Coelom is lined by

Animals without coelom are known as ……….

A set of fundamental and derived units is known as ______ .

A set of fundamental and derived units is known as ______ .

Coelom is lined by :-