In which group of animals, a closed circulatory system is present ?

Question

In which group of animals, a closed circulatory system is present ? (A) Arthropoda (B) Mollusca (C) Hemichordata (D) Annelida

Tardigrade Admin · Accepted Answer

In Annelida and chordata, a closed circulatory system is present.

Q. In which group of animals, a closed circulatory system is present ?