A. They are autotrophic
B. They lack a nucleus
C. They are multicellular and heterotrophic
D. They are unicellular
Answer: They are multicellular and heterotrophic
What is a defining characteristic of organisms in the kingdom Animalia?
Additional Information: Organisms in the kingdom Animalia are multicellular and heterotrophic, meaning they rely on other organisms for food.
Subjects: Biological Classification, Biology