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