geotropism
Related Words
gravitropismgravityplantrootshootstemauxinhormonetropismphototropismthigmotropismchemotropismgrowthdirectionorientationstatolithamyloplastcytoplasmcelltissuemeristemelongationpositivenegativedownwardupwardverticalsoilsubstrateseedgerminationradicleplumulebotanybiologyphysiologyorganismresponsestimulussensorperceptiongradientconcentrationtransportdiffusionturgorpressureexpansioncurvaturebendingangleaxispolarityhomeostasisadaptationevolutionecologybiomechanicscolumellaplastidstarchgranulesignaltransductionproteinreceptormembranevacuolecytoskeletonmicrotubuleactincytokiningibberellinethylene