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32 Cards in this Set
- Front
- Back
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what is the body cavity |
space between gut and body wall |
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what are the three types of body cavities? |
acoelomate, pseudocoeomate, true coelm |
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acoelomate? |
solid body |
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pseudocoelomate? |
unlined cavity |
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true coelom? |
lined cavity |
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true coelom is found in a majority of |
animal groups including us |
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repeating units allows for |
specialization |
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body segmentation increases? |
mobility |
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where can body segmentation may only be seen in |
embryos |
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the simplest animal exist today |
placozoan |
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paleozoan has |
2 cell layers; marine |
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phylum porifera are |
sponges |
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Phylum Porifera environment |
marine |
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phylum porifera have no... |
no tissues, gut or segmentation |
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phylum porifera are |
multicellular but no symmetry |
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how do phylum porifera reproduce? |
sexually or asexually |
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hermaphrodites reproduce |
produce sperm and eggs |
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phylum porifera do what |
filter feeders |
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phylum cnidaria are |
hydra, jellies, anemones, coral |
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Cnidarian's have what type of symmetry |
radial symmetry |
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the radial symmetry of cnidarians allow for |
allows it to meet the environment equally |
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cnidarian has how many basic body forms |
two |
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how many tissue layers does cnidarian have |
two; no mesoderm |
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what type of gut do cnidarian have |
incomplete |
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what is the gastrovascular cavity used in cnidarian |
use for movement and to obtain food source |
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what are the two stages in cnidarian? |
medusa and polyp |
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Phylum Platyhelminthes are |
flat worms |
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Phylum Platyhelminths live like |
free living or parasitic |
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three types of phylum platyhelminths |
free living flat worms, tapeworms, flukes |
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what is the symmetry of Phylum Platyhelminthes |
bilateral |
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bilateral symmetry in flat worms allows for some? |
degree of cephalization |
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what type of gut does the flat worm have |
incomplete |
