Open circulatory system is present in:A)Arthropods,B)Annelids,C) Chordates, D)Molluscs

Options

(a) Chordates only
(b) Chordates and Annelids
(c) Molluscs only
(d) Arthropods and Molluscs

Correct Answer:

Arthropods and Molluscs

Explanation:

Open circulatory system occurs in invertebrate animals such as arthropods (e.g insects, spiders, crabs and lobsters) and some molluscs (e.g. snails, oysters and clams).