Protists, Fungi, and Plants Flashcards
(23 cards)
any of a diverse taxonomic group and especially a kingdom (Protista syn. Protoctista) of eukaryotic organisms that are unicellular and sometimes colonial or less often multicellular and that typically include the protozoans, most algae, and often some fungi (as slime molds)
Protist
an organism deriving its nutritional requirements from complex organic substances.
Heterotroph
an organism consisting of a cell or cells in which the genetic material is DNA in the form of chromosomes contained within a distinct nucleus
Eukaryote
an organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material.
Decomposer
an organism that lives in or on another organism (its host) and benefits by deriving nutrients at the host’s expense
Parasite
an animal or plant on or in which a parasite or commensal organism lives
Host
any of a group of unicellular, multicellular, or syncytial spore-producing organisms feeding on organic matter, including molds, yeast, mushrooms, and toadstools.
Fungi
a minute, typically one-celled, reproductive unit capable of giving rise to a new individual without sexual fusion, characteristic of lower plants, fungi, and protozoans.
Spore
a simple slow-growing plant that typically forms a low crustlike, leaflike, or branching growth on rocks, walls, and trees.
Lichen
a plant that is characterized by the presence of conducting tissue.
Vascular plant
plants without a vascular system (xylem and phloem)
Nonvascular plant
a plant that has seeds unprotected by an ovary or fruit. Gymnosperms include the conifers, cycads, and ginkgo.
Gymnosperm
a plant that has flowers and produces seeds enclosed within a carpel. The angiosperms are a large group and include herbaceous plants, shrubs, grasses, and most trees.
Angiosperm
he process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water
Photosynthesis
what cells do to break up sugars into a form that the cell can use as energy
Cellular respiration
the process where plants absorb water through the roots and then give off water vapor through pores in their leaves
Transpiration
the turning of all or part of an organism in a particular direction in response to an external stimulus
Tropism
a turning or growth movement by a plant or fungus in response to gravity
Gravitropism
the orientation of a plant or other organism in response to light, either toward the source of light or away from it
Phototropism
a type of reproduction by which offspring arise from a single organism, and inherit the genes of that parent only
Asexual Reproduction
a disease caused by toxoplasmas, transmitted chiefly through undercooked meat, or in soil or cat feces
Toxoplasmosis
an intermittent and remittent fever caused by a protozoan parasite that invades the red blood cells. The parasite is transmitted by mosquitoes in many tropical and subtropical regions.
Malaria
an intestinal infection marked by abdominal cramps, bloating, nausea and bouts of watery diarrhea
Giardia