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Questions and Answers
Which one of these statements about animal evolution is correct?
Which one of these statements about animal evolution is correct?
- Animals evolved to have a coelom for extracellular digestion.
- Animals evolved a body cavity to increase food capacity and digestion. (correct)
- Animals evolved to have a haploid gametophyte stage.
- Animals evolved to have cell walls for active movement.
Which one of these statements accurately describes invertebrates?
Which one of these statements accurately describes invertebrates?
- Invertebrates have a radial symmetry. (correct)
- Invertebrates have a coelom for complex structures in the digestive system.
- Invertebrates have distinct tissues and organs.
- Invertebrates are sessile as adults.
Which one of these statements accurately describes invertebrates of the phylum Cnidaria?
Which one of these statements accurately describes invertebrates of the phylum Cnidaria?
- Cnidarians have specialized cells but no distinct tissues or organs. (correct)
- Cnidarians have a coelom for extracellular digestion.
- Cnidarians exhibit bilateral symmetry.
- Cnidarians release enzymes into the gut cavity for digestion.
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