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30 terms

Biology Ch. 20 Vocab (Olczyk)

biology all vocab for ch 20 (olczyk) Link to Final Exam Set: http://quizlet.com/12215948/biology-final-exam-vocab-review-olczyk-flash-cards/
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accessory pigment
compound other than chlorophyll that absorbs light at different wavelengths than chlorophyll
eyespot
Group of cells that can detect changes in the amount of light in the environment
pellicle
Cell membrane in Euglenas
phytoplankton
population of algae and other small, photosynthetic organisms found near the surface of the ocean and forming part of plankton
phycobilin
accesory pigment found in red algae that is especially good at absorbing blue light.
filament
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
gametophyte
Haploid, or gamete-producing, phase of an organism
spore
haploid reproductive cell
sporophyte
diploid, or spore-producing, phase of an organism
protist
any eukaryote that is not a plant, an animal, or a fungus
pseudopod
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
cilium
short hairlike projection similar to a flagellum; produces movement in many cells
trichocyst
small, bottle-shaped structure used for defense by paramecia
marconucleus
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
micronucleus
the smaller of a ciliate's two nuclei; contains a "reserve copy" of all of the cell's genes
gullet
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
conjugation
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
plasmodium
structure with many nuclei formed by acellular slime molds
hypha
tiny filament that makes up a multicellular fungus or a water mold
zoosporangium
Spore case
antheridium
Male reproductive structure in some algae and plants
oogonium
Specialized structure formed by hyphae that produces female Nuclei