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