Class 11 NEET Biology Animal Kingdom Questions Part 3

The correct answer is option (3) as Anopheles (Arthropods), Limax (Mollusc) and Limulus (Arthropods) have an open circulatory system.
Option (1) is incorrect as Nereis (Annelid) has a closed circulatory system.
Option (2) is incorrect as Hirudinaria (Annelid) has a closed circulatory system.
Option (4) is incorrect as Pheretima (Annelid) has a closed circulatory system.
Arthropods (Palaemon, Bombyx, Musca) have an open circulatory system.
Hemichordates (Balanoglossus) have an open circulatory system.