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3rd 9 wk- test: Chapter 13

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Description
vertebrate   an animal w/ a backbone  
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invertebrate   in animal w/ out a backbone  
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bilateral symmetry   describes animals w/ body parts arranged in the same way on both sides of their body  
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radial symmetry   describes animals w/ body parts arranged in a circle around a central point; similar to a bicycle wheel  
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sessile   describes organisms, such as trees, that remain attached to one place during their lifetime  
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filter feeder   an organism that obtains food & oxygen by filtering it from the water from which it lives  
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collar cell   in sponges, the lining cells that help move through the sponge by beating of the flagella  
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regeneration   the ability of an organism to replace body parts; a type of asexual reproduction in which a whole new organism grows from just a part of the parent organism  
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hermaphrodite   an animal that produces sperm and egg  
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larva   a young organism that develops between egg and adult stages  
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cnidarian   a phylum of hollow-bidied animals w/ stinging cells  
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tentacles   the arm- like structures that surround the mouth of some organisms and help them to capture food  
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polyp   a vase shaped cnidarian that is usually sessile  
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medusa   a bell shaped cnidarian that is free swimming  
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free living   describes an organism that finds its own food and place to live w/ out depending on another organism; the opposite of a parasite  
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anus   an opening at the end of the digestive tract through which solid wastes leave the body  
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cyst   a young, parasitic worm w/ a protective covering  
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Created by: Backwrdfshy
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