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SLS Bio 11 Animal Kingdom MW

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Term
Definition
asexual reproduction   reproduction without sex of male and female gametes  
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cell   basic structure of all organisms  
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cephalization   concentration of nerve control and sense organs; forms a head and brain (evolution and embryo development)  
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closed circulatory system   have blood closed at all times within vessels; blood is pumped by a heart  
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coelom   body cavity, between intestinal canal and body wall  
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colonial   made up of many individual organisms to form a colony  
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fluid feeding   to feed on the fluid of other organisms (refers to: hematophagy or nectarivore)  
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endoskeleton   internal skeleton; bony, cartilage found in vertebrates  
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excretion   process of passing waste matter  
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exoskeleton   external skeleton; in invertebrates, esp. arthropods for support and protection  
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filter feeding   by aquatic animals; feeding by filtering out plankton/nutrients in the water  
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free-living   living freely; not as a parasite  
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internal transport   circulatory system is responsible for internal transport; blood, a pumping device (ex. heart), and blood vessels where the blood flows  
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invertebrates   animal lacking a backbone such as an arthropod  
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levels of organization   from simple to complex: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere  
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life functions   properties that distinguish living from dead or inanimate  
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medusa   a cnidarian where the body is shaped like an umbrella  
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motility/motile   ability to move spontaneously, consuming energy in the process  
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multicellular   having many cells  
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niche   role that an animal plays in an ecosystem  
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open circulatory system   where blood can mix in an organism  
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organ   a part of an organism that is self-contained and has a specific vital function  
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organ system   a group of organs that work together to perform one or more functions  
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parasite   organism that lives in or on another organism (its host) and benefits by deriving nutrients from the host  
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polyp   a phase in the life cycle that alternates with a medusoid phase  
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reproduction   process by which new individual organisms – "offspring" – are produced from their "parents"  
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respiration   conversion of oxygen into the energy; how they continue life  
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response   behaviour resulting from an internal or external force  
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sessile   permanently attached  
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sexual reproduction   reproduction; involves the union of gametes  
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symmetry   correspondence on opposite sides of an axis  
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tissue   ensemble of similar cells from the same origin that together carry out a specific function  
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vertebral column   series of vertebrae that provide support and form a case for the spinal cord  
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