- Statement A is correct: Animals are heterotrophs; they cannot produce their own food and obtain energy by consuming other organisms. - Statement B is incorrect: Cellulose is a complex carbohydrate that is the main structural component of cell walls in plants. Animal cells do not have cell walls, and their bodies are not primarily composed of cellulose. Some animals (like termites) can digest cellulose with the help of symbiotic microorganisms, but their bodies themselves do not contain it structurally. - Statement C is correct: Animals lack chlorophyll, the pigment necessary for photosynthesis, unlike plants. - Statement D is generally correct: Most animals are motile, meaning they can move from one place to another, which is a key characteristic distinguishing them from sessile plants (though some animals are sessile, like sponges).