31. Invertebrates
Porifera and Cnideria
1:14 minutes
Problem 4b
Textbook Question
Textbook QuestionJon found an organism in a pond, and he thinks it's a freshwater sponge. His friend Liz 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. Figure out whether it is autotrophic or heterotrophic. c. See if it is a eukaryote or a prokaryote. d. Look for cell walls under a microscope.
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