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According to the evolutionary theory, fo...

According to the evolutionary theory, formation of a new species is generally due to

A

sudden creation by nature

B

accumulation of variations over several generations

C

clones formed during asexual reproduction

D

movement of individuals from one habitat to another.

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The correct Answer is:
B
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ZEN PUBLICATION-HEREDITY AND EVOLUTION -ZEN ADDITIONAL QUESTIONS SECTION (MULTIPLE CHOICE QUESTIONS)(NCERT Exemplar Questions )
  1. A cross between a tall plant (TT) and short pea plant (tt) resulted in...

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  2. Which of the following statements is incorrect?

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  3. If a round, green seeded pea plant (RR yy) is crossed with wrinkled, y...

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  4. The maleness of a child is determined by

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  5. A zygote which has an X-chromosome inherited from the father will deve...

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  6. Select the incorrect statement:

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  7. The following vegetables are kept in a basket: Potato, Tomato, Radish,...

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  8. Select the correct statement:

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  9. If the fossil of an organism is found in the deeper layers of earth, t...

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  10. Which of the following statements is not true with respect to variatio...

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  11. A trait in a offspring in influenced by the DNA of

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  12. Select the group which shares maximum number of common characters

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  13. According to the evolutionary theory, formation of a new species is g...

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  14. From the list given below, select the character which can be acquired ...

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  15. The two versions of a trait (character) which are brought in by the ma...

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  16. In peas, a pure tall plant (TT) is crossed with a short plant(tt). The...

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  17. The numberof pair (s) of sex chromosomes in the zygote of humans is

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  18. The theory of evolution of species by natural selection was given by

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  19. Some dinosaurs had fathers althought they could not fly but birds have...

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  20. Which of the following is analogous to the wing of a parrot?

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