1202L10fig

1202L10fig - Chapter 33 Understand (from ch. 32) radial vs....

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Chapter 33 Understand (from ch. 32) radial vs. bilateral symmetry (32.7), acoelomate vs. pseudocoelomate vs. coelomate (32.8), protostome vs. deuterostome (32.8), and what a lophophore is Understand how sponges feed and why they are an evolutionary dead end Know the major homologies each phylum shares Know the differences between the major classes of cnidarians, flatworms, and mollusks Figure 32.7 Body symmetry Figure 32.8 Body plans of the bilateria
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Figure 32.9 A comparison of early development in protostomes and deuterostomes Figure 33.2 Review of animal phylogeny Porifera- the sponges 0. Parallel evolution: no tissues, symmetry or ___ 1. Flagellated _____cells (choanocytes) filter food from water in in spongocoel 2. Amoebocytes in mesohyl (fluid filled center) carry food in vacuoles to target cells
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Fig. 33.4 Parazoa- the sponges o Folding of filter chambers allows evolution of ______ sponges o Internal skeleton of _______in mesohyl o Thought to have evolved from choanoflagellates, but evolutionary “dead end” Cnidarians 0. Radial symmetry, diploblastic (___ germ layers) 1. First true tissues, incomplete gut 2. Polymorphism_____ and medusa 3. Specialized cnidocytes for food capture
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1202L10fig - Chapter 33 Understand (from ch. 32) radial vs....

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