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Key Terms: Ch. 6

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Chapter 6 Key Terms
Binomial nomeclature   the naming system for organisms in which each organism is given a two-part name ( genus and species)  
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Budding   A form of asexual reproduction in which a new organism grows out of the body of a parent  
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Cilia   The hair-like projections on the outside of cells that move in a wave like manner  
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Classification   The process of grouping things based on their similarities  
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Conjugation   The process in which a unicellular organism transfers some if its genetic material to another unicellular organism  
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Cotyledon   A seed leaf that stores food  
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Decomposer   An organism that breaks down the remains of dead organisms  
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Embryo   The young organism that develops from a zygote  
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Algae   Plant-like protists  
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Endospore   A small, rounded, thick-walled, resting cell that forms inside a bacterial cell  
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Fertilization   The joining of a sperm cell and an egg cell  
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Flagellum   A long, whip-like structure that helps a unicellular organism move  
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Flower   The reproductive structure of an angiosperm  
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Fruit   The ripened ovary and other structures that enclose one or more seeds of an angiosperm  
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Genus   A classification grouping that consists of a number of similar, closely related species  
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Hormone   The chemical product of an endocrine gland that speeds up or slows down the activites of an organ or tissue; also a chemical that affects a plant's growth and development  
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Host   An organism that provides a source of every or a suitable environment for another organism to live  
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Hyphae   Branching thread-like tubes that make up the bodies of multicellular fungi  
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Ovule   A plant structure in seed plants that contain an egg cell  
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Parasite   An organism that lives on or in a host and causes harm to the host  
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Pistil   The femail reproductive part found in the petals of a flower in a seed producing plant  
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Pollen   Tiny particles produced by plants that contain the microscopic cells that later become sperm cells  
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Protozoan   An animal-like protist  
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Pseudopod   A "false-foot" or temporary bulge of the cell membrane used for feeding and movement of some protozoans  
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Seed   The plant structure that contains a young plant inside a protective covering  
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Species   A group of similar organisms whose members can mate with one another and produce fertile offspring  
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Spore   A tiny cell that is able to grow into a new organism  
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Stamen   The male reproductive part of a flower  
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Taxonomy   The scientific study of how living things are classified  
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Tropism   The growth response of a plant towards or away from a stimulus  
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Vascular Tissue   The internal transporting tissue in some plants that is made up of tube-like structures  
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Zygote   A fertilized egg, produced by the joining of a sperm cell and an egg cell  
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Binary Fission   A form of asexual reproduction in which one-cell divides to form two identical cells  
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