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