A) Two-chambered heart. B) Four-chambered heart. C) Three-chambered heart. D) Single chamber heart.
A) Amphibians. B) Reptiles. C) Mammals and birds. D) Fish.
A) To scare predators. B) Flight and insulation. C) Feathers are mainly decorative. D) To help with walking.
A) Hearing. B) Vision. C) Taste. D) Smell.
A) Laying eggs in water. B) Building nests in trees. C) Parental care of young. D) Migrating long distances.
A) Nares. B) Vagina. C) Cloaca. D) Urethra.
A) Placental mammals. B) Carnivores. C) Marsupials. D) Monotremes.
A) Through metabolic processes. B) By burrowing into the ground. C) By varying their feather count. D) Using external sources like sun.
A) Skin. B) Feathers. C) Fur. D) Scales. |