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biology all vocab for ch 20 (olczyk) Link to Final Exam Set:

accessory pigment

compound other than chlorophyll that absorbs light at different wavelengths than chlorophyll


Group of cells that can detect changes in the amount of light in the environment


Cell membrane in Euglenas


population of algae and other small, photosynthetic organisms found near the surface of the ocean and forming part of plankton


accesory pigment found in red algae that is especially good at absorbing blue light.


In algae, a long threadlike colony formed by many green algae; in plants, a long, thin structure that supports an anther

alternation of generations

process in which many algae switch back and forth between haploid and diploid stages of their life cycles


Haploid, or gamete-producing, phase of an organism


haploid reproductive cell


diploid, or spore-producing, phase of an organism


any eukaryote that is not a plant, an animal, or a fungus


temporary projection of cytoplasm, or a "false foot," used by some protists for feeding or movement

amoeboid movement

Type of locomotion used by amoebas

food vacuole

small cavity in the cytoplasm of protists that temporarily stores food


short hairlike projection similar to a flagellum; produces movement in many cells


small, bottle-shaped structure used for defense by paramecia


the larger of a ciliate's two nuclei, contains multiple copies of most of the genes that the cell needs in its day-to-day existence


the smaller of a ciliate's two nuclei; contains a "reserve copy" of all of the cell's genes


indentation in one side of a ciliate that allows food to enter the cell

anal pore

region of the cell membrane of a ciliate where waste-containing food vacuoles fuse and are then emptied into the environment

contractile vacuole

Cavity in the cytoplasm of some protists that collects water and discharges it from the cell


form of sexual reproduction in which paramecia and some prokaryotes exchange genetic information

cellular slime mold

slime mold whose individual cells remain separated during every phase of the mold's life cycle

acellular slime mold

slime mold that passes through a stage in which its cells fuse to form large cells with many nuclei

fruiting body

slender reproductive structure that produces spores and is found in some funguslike protists; reproductive structure of fungus that develops from a mycelium


structure with many nuclei formed by acellular slime molds


tiny filament that makes up a multicellular fungus or a water mold


Spore case


Male reproductive structure in some algae and plants


Specialized structure formed by hyphae that produces female Nuclei

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