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