Biology Ch. 20 Vocab (Olczyk)

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30 terms · biology all vocab for ch 20 (olczyk) Link to Final Exam Set: http://quizlet.com/12215948/biology-final-exam-vocab-review-olczyk-flash-cards/

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

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