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SLS Bio11 Animals PJ

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Term
Definition
asexual reproduction   A form of reproduction that does not involve meiosis, ploidy reduction or fertilization, and the offspring is a clone of the parent organism; because of no exchange of genetic material.  
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cell   Cells are the smallest unit of life that can replicate independently  
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cephalization   a tendency in the development of animals to localization of important organs or parts in or near the head  
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closed circulatory system   blood remains in blood vessels and heart at all time  
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coelom   Body cavity in most multicellular animals; positioned inside the body to surround and contain the digestive tract and other organs  
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colonial   living in colonies  
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fluid feeding   organisms that feed on the fluid of other organisms  
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endoskeleton   internal skeleton of the body of an animal  
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excretion   The act or process of discharging waste matter from the blood, tissues, or organs.  
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exoskeleton   Skeleton that is on the outside of an animals body (insects, Shells)  
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filter feeding   a method of feeding occurring in some aquatic animals, such as planktonic invertebrates and whalebone whales, in which minute food particles are filtered from the surrounding water  
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free-living   not dependent on presence or activities of other organisms for survival  
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internal transport   circulatory System, digestive System, excretory system  
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invertebrates   creatures without a backbone/spine.  
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Levels of organization   cellular, tissues, organs?  
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life functions   digestive System, circulatory System, respiratory System, excretory System, reproduction, nervous system  
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medusa   one out of two Body forms of the cnidarians; typically motile with ring of tentacles surrounding an aboral mouth (jellyfish)  
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motility   moving or capable of moving spontaneously  
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motility/motile   moving or capable of moving spontaneously  
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multicellular   composed of several or many cells.  
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niche   relationship between organism and biotic and abiotic parts of Environment  
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open circulatory system   blood is allowed to leave small arteries and soak through tissues ans sinuses until it goes back into the blood system  
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organ   a grouping of tissues into a distinct structure, as a heart or kidney in animals or a leaf or stamen in plants, that performs a specialized task.  
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organ system   Group of organs that are working together  
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parasite/parasitic   an organism that lives on or in an organism of another species, known as the host, from the body of which it obtains nutriment.  
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Polyp   a sedentary type of animal form characterized by a more or less fixed base, columnar body, and free end with mouth and tentacles, especially as applied to coelenterates  
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reproduction   the natural process among organisms by which new individuals are generated and the species perpetuated.  
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respiration   inhalation and exhalation of air; breathing  
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response   any behavior of a living organism that results from an external or internal stimulus  
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sessile   permanently attached, not freely moving  
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sexual reproduction   The production of a new living thing by two parent organisms, with each parent contributing half the material in the DNA of the offspring. The new living thing is genetically different from either parent.  
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symmetry   the proper or due proportion of the parts of a body or whole to one another with regard to size and form  
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tissue   an aggregate of similar cells and cell products forming a definite kind of structural material with a specific function, in a multicellular organism  
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vertebral column   back bone or spine (The column of vertebrae between the skull and the hip bones, supporting the body and shielding the spinal cord.)  
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