BIOL 212 Lab Exercise Porifera & Cnidaria

BIOL 212 Lab Exercise Porifera & Cnidaria - 3 Do...

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BIOL 212 Lab Exercise: Porifera & Cnidaria Name_______________________________________ 1. Write the appropriate group of animals from the table below next to the empty nodes on the phylogenetic tree. Write the appropriate morphological change from the table next to the bars on the phylogenetic tree. Hint: Need help? See BioSkills 2 (Appendix B) & Fig. 32.10 in your textbook. Animal groups Morphological changes Bilateria, Cnidaria, Porifera bilateral symmetry, endoderm/ectoderm, mesoderm, multicellularity, radial symmetry 2. How do sponges supply their cells with oxygen? With nutrients? How do cnidarians accomplish these things?
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Unformatted text preview: 3. Do cnidarians have structures that perform the same role as the sponges’ spicules? If so, what are they? If not, why not? 4. In the space below, sketch a medusa and a polyp. Label each drawing with the class of the animal you draw, any further identifying information available (genus, common name, etc), and the type of specimen (slide, live specimen, preserved specimen, etc.). Label the mouth, tentacles, and gastrovascular cavity in each. Medusa Polyp...
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