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