Question

Which among the following have open circulatory system? 

(i) Arthropoda 

(ii) Mollusca 

(iii) Annelida 

(iv) Coelenterata 

(a) (i) and (ii) 

(b) (iii) and (iv) 

(c) (i) and (iii) 

(d) (ii) and (iv)

Answer 1

(a) (i) and (ii)