All animals are ____.

Question

Quizplus · Accepted Answer

This is the classic definition of animals. They are multicellular, meaning they have more than one cell; heterotrophic, meaning they must consume other organisms for sustenance; and motile, meaning they can move on their own. Option B is incorrect because not all animals have walled cells (e.g. blood cells). Option C is incorrect because autotrophic organisms produce their own food, whereas animals are heterotrophic. Option D is incorrect because not all animals are autotrophic and reproduce sexually. Option E is incorrect because not all animals are unicellular and autotrophic.

All Animals Are ____