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30 Cards in this Set

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  • Back
eukaryotic organisms that convert the sun’s energy into food through photosynthesis but that do not have roots, stems, or leaves
algae
the alternation of sexual reproduction and asexual reproduction in certain plants and animals
alternation of generations
a reproductive structure that produces male sex cells in flowerless and seedless plants
antheridium
a cell or an organ that produces gametes
gametangeium
in alternation of generations, the phase in which gametes are formed; a haploid individual that produces gametes
gametophyte
a single-celled gametangium (female sex organ) in some algae and fungi
oogonium
the microscopic, photosynthetic organisms that float near the surface of marine or fresh water and that are the basic source of food in many aquatic ecosystems; examples include algae and cyanobacteria
phytoplankton
a small, protein structure that is found within the chloroplasts of algae and some liverworts and that plays a part in the synthesis of starch
pyrenoid
a specialized sac, case, capsule, or other structure that produces spores
sporangium
in plants and algae that have alternation of generations, the diploid individual or generation that produces haploid spores
sporophyte
the body type of an algae, fungus, or plant that is not differentiated into roots, stems, or leaves
thallus
a flagellated, motile spore produced by algae and some protozoans
zoospore
in some algae, a thick-walled protective structure that contains a zygote that resulted from the fusion of two gametes
zygospore
a gel-like base for culturing microbes; extracted from certain red algae
agar
a salt of alginic acid
alginate
the production of light by means of a chemical reaction in an organism
bioluminescence
a plant disease characterized by the browning of leaves, stems, and flowers
blight
the broad, flat portion of a typical leaf
blade
aquatic protists
chytrid
a substance that is found in the cell walls of red algae and that is used commercially as a smoothing agent in foods
carageenan
a unicellular alga that has a double shell that contains silica
diatom
a soft, fine, porous deposit that is composed mainly of the skeletons of diatoms
diatonaceous earth
unicellular algae that show both plant and animal-like characteristics
euglenoid
brown pigment in brown algae
fucoxanthin
a carbohydrate made by brown algae
lamanarin
a pigment in red algae that can absorb the wavelengths of extremely dim light, which allows red algae to exist in very deep water
phycoblin
a population explosion of certain marine dinoflagellates that causes the water to turn a red or red-brown color and to contain poisonous alkaloids produced by the dinoflagellates
red tide
stem-like portion of the alga
stipe
half of a diatom
valve
the multinucleate cytoplasm of a slime mold that is surrounded by a membrane and that moves as a mass
plasmodium