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