... The behaviour of trapping leaves of Drosera species while prey catching was carefully studied in laboratory more then a hundred years ago (Darwin, 1875; Hooker, 1916). The leaves of Drosera species have short tentacles in the central part of the leaf blade and long (marginal) tentacles on its periphery. ... The fact of co-ordinated behaviour of leaf blades of different plants also indirectly shows the absence of clear dependence of trapping leaves behaviour on presence of prey on them. ...