Which characteristic separates the animal and plant kingdoms? A. Animal kingdom consists of organisms that do not produce their own food, while the plant kingdom does produce their own food. B. Animal kingdom consists of multicellular organisms, while the plant kingdom consists of unicellular organisms. C. Animal kingdom consists of unicellular organisms, while the plant kingdom consists of multicellular organisms. D. Animal kingdom consists of organisms that produce their own food, while the plant kingdom does not produce their own food.