Question 1 :
The diversity in the type of beaks of finches adapted of different feeding habits on the Galapagos islands as observed by Darwin, provides evidence for

Question 2 :
Light coloured peppered moth, <i>Biston betularia</i> gets changed to its darker variety <i>Biston carbonaria</i>, due to

Question 3 :
In which of the following, Darwin (based on his theory) did not believe in having any role in organic evolution?<br>

Question 6 :
Darwin in his 'Natural Selection Theory' did not believe in one of the following in organic evolution?

Question 10 :
<b><span>Which of the following is/are true about natural<br><br>selection?<br><br><br><br><br><br>i. It occurs in an expanding population<br><br><br>ii. Recessive genes are naturally eliminated<br><br><br>iii. Weaker species are naturally eliminated<br><br><br>iv. It paves way for the survival of the fittest</span></b><br><br><br><br>

Question 11 :
Assertion: A sickle-cell anaemia is an example of natural selection in human population in Africa. Reason: It saves Africans from fatal disease of malaria in heterozygous condition.

Question 14 :
Which one of the following phenomena supports Darwin's concept of natural selection in organic evolution?

Question 17 :
The evidence in support of evolution is not provided by which one of the following?

Question 18 :
Given are the following options:<div>1- natural selection, 2- variations and their inheritance, 3- survival of the fittest, 4- struggle for existence. <div>According to Darwinism, which of the following represents the correct sequence of events in the origin of new species?</div></div>

Question 22 :
The process of change by which an organism or species becomes better suited to its environment is known

Question 23 :
Which of the following did Darwin not include as evidence of evolution in origin of species?