A) Single chamber heart. B) Four-chambered heart. C) Two-chambered heart. D) Three-chambered heart.
A) Reptiles. B) Fish. C) Amphibians. D) Mammals and birds.
A) Feathers are mainly decorative. B) To scare predators. C) Flight and insulation. D) To help with walking.
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) Cloaca. B) Vagina. C) Nares. D) Urethra.
A) Monotremes. B) Carnivores. C) Placental mammals. D) Marsupials.
A) Through metabolic processes. B) By burrowing into the ground. C) By varying their feather count. D) Using external sources like sun.
A) Feathers. B) Skin. C) Scales. D) Fur. |