BIOXI04: ANIMAL KINGDOM
332260
Open circulatory system is present in
1 Annelids and arthropods
2 Hemichordates and cephalochordates
3 Arthropods and hemichordates
4 Molluscs and annelids
Explanation:
Open circulatory system is present in Arthropoda, Mollusca (except cephalopods), Echinodermata, Hemichordata and Urochordata.