A. Echinoderms B. Ctenophora C. Cephalochordata D. Cnidaria

A. Neoblast B. Sertoli cells C. Follicular cells D. Helper cells

A. Earth worm, pinworm, Tapeworm B. Prawn, scopion, locusta C. Sponge, sea anemone, starfish D. Malaria parasites, amoba, mosquito

A. Silver fish B. Puffer fish C. Flying fish D. Cuttle fish

A. Two special chambers crop and gizzard in their digestive tract B. Eggs with calcareous shells C. Scales on their hind limb D. Four chambered heart

A. Bird B. Reptiles C. Arthropods D. Amphibian

A. Toad B. Bird C. Frog D. Tortoise

A. Eagle B. Rhea C. Humming bird D. Ostrich

A. Aves B. Reptiles C. Mammals D. Amphibians