Nematodes are differentiated from other worms by -: (A) Segmentation absent, (B) Separate celomic cavity, (C) Sexes separate, (D) They are cylindrical
Answer is A. Nematodes are helminths which belong to phylum Nematoda.They are elongated ,bilaterally symmetrical,cylindrical,unsegmented worms with tapering ends.They resemble eaworm.(refer pgno:136 baveja 3 rd edition)