Bilateral symmetry, segmentation, coelom and open circulatory system characterises which of the following phyla?

Bilateral symmetry ,metameric segmentation coelom and open circulatory system characterizes which of the following phylum ?

Bilateral symmetry, metameric segmentation coelom and open circulatory system are the characters of

Bilateral symmetry, metameric segmentation coelom and open circulatory system are the characters of

An open circulatory system occurs in

Bilateral symmetry, metameric segmentation, coelom and open circulatory are features of

Open circulatory system occurs in

Open circulatory system occurs in