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Statement (S): Species are groups of pot...

Statement (S): Species are groups of potentially interbreeding natural populations that are isolated from other such groups
Reason (R): Reproductive isolation brings about distinctive morphological characters

A

Both (A ) and (R ) are true and (R ) is the correct explanation of (A).

B

Both (A ) and (R ) are true but (R ) is not the correct explanation of (A)

C

(A ) is true statement but (R ) is false

D

Both (A ) and (R ) are false

Text Solution

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The correct Answer is:
B
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GRB PUBLICATION-ORGANIC EVOLUTION -REPRODUCTIVE ISOLATION
  1. In evolution, the resemblance between widely different animals due to ...

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  2. Which is not explained by Lamarckism ?

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  3. Statement (S): Species are groups of potentially interbreeding natural...

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  4. Assertion (A ) : The long neck of giraffe is due to centripetal select...

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  5. Arrange the periods of palaeozoic era in ascending order in a geologic...

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  6. The natural selection that acts against change in form and keeps the p...

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  7. The formation of two species from one ancestral species is known as

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  8. Which of the following have not left any evidence of organic evolution...

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  9. The presence of recessive trait in a large population is be 16% the fr...

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  10. Frequencyof an autosomal recessive lethal gene is 0.4 Frequency of car...

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  11. Where there is sustained directional change in the average characters ...

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  12. Plants fo the Galapagos Islands resembles most closedly to the plants ...

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  13. Inclusive fitness theory is proposed by

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  14. Prototherians are connecting link between :

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  15. Darwin finches are related to which of the following evidences ?

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  16. Allopatric speciation is due to

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  17. Which one is linked to evolution ?

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  18. Which of the following is not a concept of Lamarck ?

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  19. Competition of species leads to :

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  20. The idea of ''survival of the fittest'' was given by

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