試題詳解

19. Mark found an organism in a pond, and he thinks it’s a freshwater sponge. His friend Ralph thinks it looks more like an aquatic fungus. How can they decide whether it is an animal or a fungus?
(A) See if it can swim.
(B) See if it is a eukaryote or a prokaryote.
(C) Look for cell walls under a microscope.
(D) Determine whether it is unicellular or multicellular.
(E) Figure out whether it is autotrophic or heterotrophic.