AP BIOLOGY

Detailed explanation-1: -The earthworm is multicellular. Multicellular organisms have specialized cells for particular functions.

Detailed explanation-2: -Worms are multicellular, eukaryotic, invertebrate animals.

Detailed explanation-3: -Organisms like insects, earthworms, hydra are multicellular organisms having well-defined nuclei with membrane-bound cell organelles and so are grouped into eukaryotes.

Detailed explanation-4: -As well as humans, plants, animals and some fungi and algae are multicellular. A multicellular organism is always eukaryote and so has cell nuclei. Humans are also multicellular.