geotropic response

См. также в других словарях:

• geotropic — adj. (Biology) pertaining to geotropism, pertaining to growth or movement of an organism in response to gravity …   English contemporary dictionary

• hormone — hormonal, hormonic /hawr mon ik, moh nik/, adj. /hawr mohn/, n. 1. Biochem. any of various internally secreted compounds, as insulin or thyroxine, formed in endocrine glands, that affect the functions of specifically receptive organs or tissues… …   Universalium

• Plant hormone — Plant hormones (also known as phytohormones) are chemicals that regulate plant growth. Plant hormones are signal molecules produced within the plant, and occur in extremely low concentrations. Hormones regulate cellular processes in targeted… …   Wikipedia

• Clinostat — Other names Klinostat, horizontal clinostat, single axis clinostat Uses reduces the effect of gravity on organisms, chiefly used with plants Inventor Julius von Sachs Related items random positioning machine A clinostat is a device which uses… …   Wikipedia

• Clinostat — Un clinostat (ou Klinostat) est un appareil de laboratoire qui utilise la rotation pour réduire les effets de la gravité sur la croissance de végétaux (étude du forçage du développement cellulaire gravitropisme) ou embryonnaire (gravimorphisme)… …   Wikipédia en Français

• Klinostat — Clinostat Un clinostat (ou Klinostat) est un appareil de laboratoire qui utilise la rotation pour réduire les effets de la gravité sur la croissance de végétaux (étude du forcage du développement cellulairegravitropisme) ou embryonnaire… …   Wikipédia en Français

• plant development — Introduction       a multiphasic process in which two distinct forms succeed each other in alternating generations. One form, created by the union of sexual cells (gametes (gamete)), contains two sets of similar chromosomes (diploid). At sexual… …   Universalium

• -tropic — comb. form 1 = TROPHIC. 2 turning towards (heliotropic). * * * .|träpik, pēk, in some words rōp adjective combining form Etymology: French tropique, from trope (I) + ique ic 1. : turning, changing, or tending to turn or change especially in a ( …   Useful english dictionary

• Gravitropism — [or geotropism ] is a turning or growth movement by a plant or fungus in response to gravity. Charles Darwin was one of the first Europeans to document that roots show positive gravitropism and stems show negative gravitropism . That is, roots… …   Wikipedia

• angiosperm — /an jee euh sperrm /, n. Bot. a plant having its seeds enclosed in an ovary; a flowering plant. Cf. gymnosperm. [ANGIO + SPERM] * * * ▪ plant Introduction       any member of the more than 300,000 species of flowering plants (division Anthophyta) …   Universalium

• -tropic — adjective combining form Etymology: French tropique, from Greek tropos tropous 1. turning, changing, or tending to turn or change in a (specified) manner or in response to a (specified) stimulus < geotropic > 2. attracted to or acting upon… …   New Collegiate Dictionary