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1. Which of the following phyla includes animals with a notochord?
Arthropoda · Chordata · Mollusca · Echinodermata
2. What is the primary characteristic of phylum Porifera?
Body symmetry · Presence of true tissues · Absence of body cavity · Cellular level of organization
3. Which class of phylum Chordata includes mammals?
Amphibia · Reptilia · Mammalia · Aves
4. What type of symmetry do cnidarians exhibit?
Radial symmetry · Bilateral symmetry · Asymmetry · Spherical symmetry
5. Which of the following is a characteristic of arthropods?
Soft-bodied · Exoskeleton made of chitin · Radial symmetry · Aquatic habitat only
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