question_answer 26)

  Match the scientists listed under column I with ideas listed column II.  

Column I	Column II
A. Darwin B. Oparin C. Lamarck D. Wagner	1. Abiogenesis 2. Use and disuse of organs 3. continental drift theory 4. Evolution by natural selection

  Codes A             B             C             D (a)          1              4              2              3 (b)          4              1              2              3 (c)           2              4              3              1 (d)          4              3              2              1

Answer:

   (b) Darwin is related with evolution by natural selection. According to the theory in the struggle for existence, the individuals which have more favourable variations will survive and reproduce, while others, which have less favourable or unfavorable variations will not puripetuate. Oparin Put forth abiogenesis theory. According to abiogenesis Life is originated from the non-living things spontaneously. Lamarck Use and disuse of organs is one of the important principle of Lamarckism. Wagner proposed continental drift theory. It states that part of the Earth's crust slowly drift atop a liquid core forming different .continents. As these continents had different environmental conditions, so plants-and animals evolved.