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