Observe the picture given below. Name the naturalist and write the explanation given by him that evolution of life forms had occurred on the basis of this example.

Name of the Naturalist –Lamarck -Evolution of life forms driven by use and disuse of organs. -He said Giraffes in an attempt to forage leaves on tall trees had to adapt by elongation of their necks. -They passed on this acquired character of elongated neck to their succeeding generations and slowly over the years all the future generations had long necks.