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Details Title: Renr 321 Description: Plant Hormones Total Flash Cards: 33 Created: 09/27/2007 10:49:01	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term what is a hormone Definition a chemical substance which is produced in one set of cells, transported and produces a response in another set of cells only a minute quantity is required to produce a response Term Auxins were first identified by Definition Charles Darwin Term Naturally occuring auxins Definition IAA, 4-chlorol IAA, PAA, IBA Term IAA full name, synthesized from Definition indole acetic acid the best known naturally occuring auxin primarily synthesized from tryptophan (an amino acid) Term 4-chlorol IAA full name Definition 4-chlorol indole acetic acid Term PAA full name is Definition phenylacetic acid Term IBA full name is Definition indolebutyric acid Term the two synthetically synthesized auxins are... Definition NAA 2,4-D Term NAA is a..., and its full name Definition a synthetically synthesized auxin naphtaleneacetic acid Term 2,4-D is a... and its full name Definition a synthetically synthesized auxin 2,4-Dichlorophenoxyacetic acid roundup Term auxin synthesis areas Definition seeds, young leaves, flushing buds seeds generate auxins, auxins generate fruit Term auxin transport method Definition - auxin transport is basipetal, from terminal bud to base - acropetal in leaves, from node to tip Term auxins trigger... Definition stimulation of: cell elongation differentiation of vascular tissues cambial activity ethylene synthesis apical dominance signalling tropism (gravitropism, phototropism) Term cytokinins were oringinally isolated when and from what Definition in the 1960's from adenine Term the two naturally occuring cytokinins are Definition N6 adenine derivatives phenyl urea compounds Zeatin (the most common form) Term cytokinins were oringinally isolated when and from what? Definition in the 1960's from adenine Term the synthetic cytokinins are (3) Definition kinetin BAP ( 6 benzylaminopurine) isopentenyl adenine Term cytokinins area of synthesis Definition mainly the roots also in seeds, fruits, and young leaves Term cytokinin transport is through Definition the xylem, and is non-polar, Term cytokinins trigger... Definition stimulate: cell division shoot formation delay senescence in leaves release lateral buds from apical domincance Term Ethylene is a... isolated from... Definition a gas (C2H4) synthesized from amino acid Term ethylene area of synthesis Definition various cells and tissues undergoing senescence (getting old) and under stress Term ethylene transportation method Definition ethylene is a gas so transport is fast and by diffusion from the synthesis site through intracellular space highly affective of surrounding plant/leaf structures once produced Term ehtylene triggered responses Definition promotes fruit ripenins triggers leaf and flower senescence leaf and flower abscission Term Abscisic acid ABA, is synthesized from , and has what structure Definition synthesized from mevalonic acid has a complex ring structure Term abscisic acid synthesis site Definition synthesized in mature leaves,(especially in response to stress), seeds and fruits Term abscisic acid transportation method Definition primary transport occurs in the phloem, but also may occur in the xylem Term effects of abscisic acid Definition stimulates stomata closure photosynthate transport from leaves to developing seeds triggers protein storage in seeds embryogenesis maintenance of bud and seed dormancy also promotion of senescence with ethylene Term Gibberelins have over __ ? naturally forms from plants, Definition 80 Term Gibberelins are produced Definition in young shoots and developing seeds Term gibberelins transports in the Definition in both the xylem and phloem Term effects of gibberelin responses Definition stimulates shoot elongation induction of seed germination flowering (particularly in long-day plants and biennials) Term Gibberelins are synthesized from what? Definition mevalonic acid (just like abscisic acid!)