Identify the incorrect statement:
(1) The earliest systems of classification used only gross superficial morphological characters.
(2) Linnaeus classification of plants was a natural classification as it was based on the androecium structure.
(3) Artificial systems gave equal weightage to vegetative and sexual characteristics.
(4) Natural classification systems are based on natural affinities among the organisms
(2) Linnaeus classification of plants was an artificial system.