Question

The group of animals having open circulatory system are:

a) Arthropoda b) Mollusca c) both (a) and (b)​

Answer 1

Answer:

Animals such as arthropods and mollusks possess an open circulatory system. Arthropods are a group of animals that include insects and crustaceans. Mollusks are a group that includes clams and oysters.

Answer 2

A and B are your answer ,thanks please mark me as brainlist