1.

Darwin in his 'Natural Selection Theory' did not believe in any role of which one of the following in organic evolution                                                                                  [CBSE PMT 2003]

A.            Discontinuous variations
B.            Parasites, predators and natural enemies
C.            Survival of the fittest
D.            Struggle for existence
Answer» B.            Parasites, predators and natural enemies


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