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Louis Pasteur's experiments, if you rec...

Louis Pasteur's experiments, if you recall, proved that life can arise from only pre-existing life. Can we correct this as life evolves from pre-esistent life or otherwise we will never answer the question as to how the first forms of life arose ? Comment.

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Yes, we correct this as life evolves from pre-esistent life. The first life that appeared on earth was apparently the result of chemical evolution , i.e, the life originated from inorganic molecules which formed organic molecules, further forming complex compounds.
This finally resulted into simple cells and then simple organisms, wherein complexity development with time. However once life originated , abiogenesis could not follow , and hence, life evolved further only through biogenesis, i.e., pre-existent life gave rise to new life.
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Knowledge Check

  • Read the given statements and select the correct ones. (i) Swan-necked flask experiment was done by Louis Pasteur. (ii) The early belief of the spontaneous origin of life was disproved by Louis paseteur. (iii) Louis Pasteur is famour for germ theory of dieseases. (iv) The idea that life originates from pre-existing life is referred to as biogenesis theory. (v) Father Suarez was one of the greatest supporter of theory of special creation. (vi) Cosmozoic theory of the origin of life was proposed by Richter. (vii) The founder of 'theory of catastrophism' is Georges Cuvier.

    A
    i,ii,iv and vi
    B
    ii,v and vii
    C
    iii,iv,v and vii
    D
    i,ii,iii,iv,v,vi,vii
  • Read the following statements carefully and select the correct ones. () Alfred wallace, a naturalist who worked in Malay Archipelago had also come to similar conclusions as Darwin around the same time. (ii) August Weismann by carefull experimentation demonstrated that life comes only from pre-existing life. (iii) The organs which have the same fundamental structure but are different in functions are called homologous organs. (iv) Rate of appearance of new form is inversely proportional to life spain of organism.

    A
    i and iii
    B
    i and ii
    C
    ii and iv
    D
    iii and iv
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