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27 Cards in this Set
- Front
- Back
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collection of cells that are permanently associated but in which little or no integration of cell activities occurs
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colonial organism
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a temporary collection of cells that comes together for a period of time and then separates
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aggregation
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an organism that consists of many cells that are permanently associated and integrated in their activities
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multicellular organism
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process in which the cells of a multicellular individual become specialized during development
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differentiation
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a member of the kingdom Protista
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Protist
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slender filament that is part of the body of a multicellular fungus
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hypha
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in fungi, a wall-like division between cells witin a hypha; a wall that internally divides body segments in annelids; thick wall that divides the heart's atrium or ventricle into right and left halves
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septum
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a group of cells within a common structure and function
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tissue
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collection of tissues that work together to perform a particular function
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organ
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group of organs that function together to carry out a major activity of the body
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organ system
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type of plant tissue that contains specialized cells that distribute water and other nutrients within the body of a plant
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vascular tissue
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animal that lacks a backbone
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invertebrate
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animal with a backbone
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vertebrate
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historic term for heterotrophic protist
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protozoan
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historical term for photosynthetic protists--not accepted by all scientists
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alga
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diploid zygote that results from the pairing of gametes of opposite mating types
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zygospore
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life cycle in which a haploid gamete-producing individual gametophyte alternates with a diploid spore-producing individual (sporophyte)
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alternation of generations
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spore capsule in which haploid spores are produced by meiosis
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sporangium
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a protist that moves using flexible, cytoplasmic extensions
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amoeba
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extension of cytoplasm of the amoeba that enables it to move
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pseudopodium
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photosynthetic unicellular protist of the phylum Bacillariohyta
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diatom
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unicellular, heterotrophic protist that is a member of the phylum Zoomastigina
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Zoomastigote
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member of the phylum Euglenophyta
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Euglenoid
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in cells, one hairlike strucure in tightly packed rows that are used for movement
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cilium
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protist of the phylum myxomycota; characterized by multinucleate, amoeboid appearance
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plasmodium
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one of three stages of Plasmodium that lives in mosquitoes and is injected into humans
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Sporozite
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stage of the life cycle of the protist Plasmodium i which the protist divides rapidly in red blood cells and produces many more merozoites
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Merozoite
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