$A$ : During evolution pouched mammals of Australia survived.
$R$ : Due to lack of competition from any other mammal due to continental drift
Assertion and Reason both are correct and also correct explanation.
Assertion and Reason both are correct but not explanation of assertion.
Assertion is correct, but Reason is incorrect.
Both Assertion and Reason are incorrect.
The three natural processes that form the basis for evolution are
Match List $- I$ with List $- II.$
List $- I$ | List $- II$ |
$(a)$ Adaptive radiation | $(i)$ Selection of resistant varieties due to excessive use of herbicides and pesticides |
$(b)$ Convergent evolution | $(ii)$ Bones of forelimbs in Man and Whale |
$(c)$ Divergent evolution | $(iii)$ Wings of Butterfly and Bird |
$(d)$ Evolution by anthropogenic action | $(iv)$ Darwin Finches |
Choose the correct answer from the options given below.
$(a)- (b)- (c)- (d)$
Which of the following refer to correct example(s) of organisms which have evolved due to changes in environment brought about by anthropogentc action$?$
$(a)$ Darwin's Finches of Galapagos islands.
$(b)$ Herbicide resistant weeds.
$(c)$ Drug resistant eukaryotes.
$(d)$ Man$-$created breeds of domesticated animals like dogs.
Evolution is
Assertion : Natural selection is the outcome of difference in survival and reproduction among individuals that show variation in one or more traits.
Reason : Adaptive forms of a given trait tend to become more common; less adaptive ones become less common or disappear.