Nyctitropism definition

Nyctitropism





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From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Nyctitropism \Nyc*tit"ro*pism\, n. [From Gr. ny`x, nykto`s,
     night + ? to turn.] (Plant Physiol.)
     The tendency of certain plant organs, as leaves, to assume
     special "sleeping" positions or make curvatures under the
     influence of darkness. It is well illustrated in the leaflets
     of clover and other leguminous plants.



















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