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A-B-C-D-E-F-G-H-I-J-K-L-M-N-O-P-Q-R-S-T-U-V-W-X-Y-Z
P
- paramylon - a glucose polymer which serves a food reserve in Euglenophyta
- paraphysis - a sterile hairlike structure among sporangia or gametangia,
as those in the brown algal order Fucales
- parenchyma - tissue composed of living thin-walled cells of equal
diameter that usually function in photosynthesis or storage
- parthenogenetic - production of new individual from single, unfertilized
gamete, usually the egg
- pelagic - living in the open ocean, offshore
- pericarp - sterile jacket of cells surrounding the carposporophyte
in the Florideophycidae
- phagotrophy - endocytosis or engulfing particles of food as a mode
of nutrition
- phragmoplast - microfibrils parallel to the spindle axis at telophase
across which a cell plate is deposited in cell division
- phycobilin - biliprotein pigments of Cyanobacteria and Rhodophyta
- phycobilisome - organelle on surface of thylakoids in which biliprotein
pigments are present in Cyanobacteria and Rhodophyta
- phycocyanin - blue water-soluble biliprotein pigment of Cyanobacteria
and Rhodophyta
- phycoerythrin - red water-soluble biliprotein pigment of cyanobacteria
and Rhodophyta
- phycoplast - assemblage of microtubules perpendicular to the spindle
and at the equator of the cell at telophase in cell division
- phylum - primary taxonomic grouping, division
- pinnate - feather shaped, with lateral branches on either side of
a central axis
- pit connection - discrete
len-shaped plug of cytoplasm held between two adjacent cell walls in
the Rhodophyta
- plankton - drifting organisms
- planozygote - a motile zygote
- plurilocular - having many small chambers or locules
- pneumatocyst - gas bladder or float as in the brown alga Macrocystis
- polyglucan granules - polymers of glucose somewhat like glycogen
in animals
- polysiphonous - having many filaments or pericentral cells as in
the red alga Polysiphonia
- polysporangium - a sporangium producing many spores, homologous with
a tetrasporangium
- polystichous - type of thallus constructed of true parenchyma as
in some brown algal orders
- polystromatic - blade of many cell layers
- procarp - carpogonial
branch adjacent to one or more auxiliary cells in Rhodophyta
- procumbent - trailing, lying flat along substratum, prostrate
- propagule - multicellular structure for asexual reproduction
- protuberant - bulging outward
- proximal - toward the base, distal
- pseudoparenchyma - tissue resembling parenchyma with large, thin-walled
cells, but developmentally filamentous
- pyrenoid - organelle
usually within a plastid, usually associated with starch food reserves
A-B-C-D-E-F-G-H-I-J-K-L-M-N-O-P-Q-R-S-T-U-V-W-X-Y-Z
Last updated: Jan. 06, 2005
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