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Related Flashcards
Cards In This Set
| Front | Back |
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What percentage of animals are invertebrates?
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95%
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Which animal group is the only one that contains vertebrates?
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Chordata
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What is the common name for porifera?
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Sponges
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What animals are aquatic, assymetrical, and possess no true tissues?
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Sponges
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Porifera are _ as adults and _ as larva
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Sessile; free-swimming
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In porifera, what is fragmentation?
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Asexual reproduction
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How do porifera sexually reproduce?
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Eggs and sperm are relased into the water and fertilization occurs externally
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Which invertebrates are filter feeders?
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Porifera
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In filter feeders, what are the small pores of which water and food particles enter called?
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Ostia
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The central cavity of a sponge is called _?
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Spongocoel
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The central cavity of sponges (spongocoel) is lined with many of these flagellated cells. These are called what?
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Choanocytes
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The sponogocoel is lined with flagellated cells called
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Choanocytes
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Water exits the sponge through the larger uppper openings called the
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Ocsula
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These invertebrates are a aquatic, radially symmetrical, and diploplastic. they are called _
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Cnidarians
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For which invertebrate, like sponges, does sexual reproduction occur externally?
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Cnidarians
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