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