To which broad biological grouping must an organism belong if it is multicellular, eukaryotic, and heterotrophic?
Answer
Kingdom Animalia
The classification of Kingdom Animalia encompasses all living entities defined by being multicellular, possessing eukaryotic cells (meaning their cells contain a nucleus and other membrane-bound organelles), and being heterotrophic. Being heterotrophic means these organisms cannot produce their own food internally, requiring them to consume other organisms for energy intake. This broad classification unites organisms ranging from simple sponges to complex vertebrates like snakes and mammals, distinguishing them from plants (which are autotrophic) and fungi (which absorb nutrients externally).
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