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BJU Biology Ch 11

BJU Biology 4th Edition - Chapter 11

TermDefinition
algae An organism in one of the seven primarily photosynthetic phyla of kingdom Protista.
amoeboid movement A constant change in shape by an amoeba or similar cell by the formation of pseudopodia.
antheridium The reproductive structure that produces sperm in certain algae and nonvascular plants.
bloom condition A rapid, seasonal reproduction of a particular organism in an optimal environment.
cellular slime mold A slime mold of the phylum Acrasiomycota in which cells maintain their individual membranes but appear to be one single organism.
ciliate A protozoan that possesses cilia.
conjugation A temporary union of two organisms or cells for the one-way transfer of genetic material; type of sexual reproduction.
contractile vacuole A vacuole, found in some cells, that collects water and expels it from the cell.
cyst A structure similar to a spore that is formed as part of the life cycle of some organisms or when conditions become unfavorable.
diatom One of the unicellular algae of phylum Bacillariophyta; has silicon in its cell walls.
dinoflagellate A member of the phylum Dinoflagellata; a unicellular alga usually possessing two flagella of unequal length and having cell walls made of cellulose plates.
euglenoid movement A modified type of amoeboid movement seen in euglena.
eyespot A light-sensitive area of some organisms.
fragmentation A form of reproduction caused by the breaking of a colonial organism by a physical disturbance.
fruiting body The spore-producing reproductive structure of a slime mold.
gullet A food passageway into the digestive tract of an animal.
macronucleus An organelle found in certain protozoans; contains multiple copies of the cell's genetic material.
micronucleus The small reproductive nucleus in some protozoans.
oogonium The structure that produces the ovum.
pellicle A firm yet flexible covering outside the cell membrane of certain protozoans.
phytoplankton Plankton that are photosynthetic organisms.
plankton A tiny floating aquatic organism.
plasmodial slime mold An acellular slime mold of the phylum Myxomycota.
protist A member of the kingdom Protista; eukaryotic but not a true animal, plant, or fungus.
protozoan A member of the kingdom Protista that exhibits animal-like characteristics; most are motile and non-photosynthetic.
pseudopodium A cytoplasmic extension of a cell; used for locomotion or engulfing substances.
pyrenoid A protein-containing structure present in in the chloroplasts of algae; center for starch storage.
seaweed A term often applied to the larger multicellular types of algae.
sessile In organisms, growing while attached to something else; nonmotile. In leaves, lacking a petiole.
slime mold A fungus-like protist that is classified as either a cellular or plasmodial species.
sporangium A structure in which spores are produced.
taxis An organism's response to a single stimulus.
thallus A leaflike or plantlike structure in algae, fungi, and plants; not differentiated into true leaves, roots, or stems.
trichocyst An organelle in a paramecium that discharges a thread-like filament in response to stimuli.
water mold A fungus-like protist that reproduces both asexually and sexually through cells called sporangia; blights are common examples.
zooflagellate A protozoan that possesses one or more flagella for propulsion; found in phylum Zoomastigina.
zooplankton Plankton that are tiny animals or protozoans.
zoospore A motile, swimming spore; possesses cilia or flagella.
zygospore A zygote surrounded by a hard, protective covering to survive unfavorable conditions.
Created by: marchscience
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