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