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Zoology - Evolution Two Marks Question

12th Standard

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Biology

Time : 00:45:00 Hrs
Total Marks : 30
    15 x 2 = 30
  1. List out the major gases seems to be found in the primitive earth.

  2. Explain the three major categories in which fossilization occur?

  3. Explain how mutations, natural selection and genetic drift affect Hardy Weinberg equilibrium.

  4. How did Darwin explain fitness of organisms?

  5. Mention the main objections to Darwinism.

  6. What are atavistic organs?

  7. State the Biogenetic law.

  8. What is the view of Neo Lamarckism?

  9. What are coprolites? (or) Write a short note on Coprolites.

  10. What is paleontology?

  11. Name the periods of Mesozoic era. Also mention the flora and fauna dominates during that periods.

  12. Compare relative dating with absolute dating

  13. What is meant by petrifaction?

  14. Thorn of Bougainvillea and tendrils of Pisum sativum represent homology. How?

  15. Human appendix is a vestige. Give reason

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