Botany - Animal Kingdom Question with Solution | TestHub

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.