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