Origin and Evolution of Life Model Question Paper

10th Standard EM

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Science

Time : 02:30:00 Hrs
Total Marks : 60
    6 x 1 = 6
  1. Biogenetic law states that ___________

    (a)

    Ontogeny and phylogeny go together

    (b)

    Ontogeny recapitulates phylogeny

    (c)

    Phylogeny recapitulates ontogeny

    (d)

    There is no relationship between phylogeny and ontogeny

  2. Paleontologists deal with

    (a)

    Embryological evidences

    (b)

    Fossil evidences

    (c)

    Vestigial organ evidences

    (d)

    All the above

  3. The term Ethnobotany was coined by

    (a)

    Khorana

    (b)

    J.W. Harsbberger

    (c)

    Ronald Ross

    (d)

    Hugo de Vries

  4. ________ is not an example of vestigial organ.

    (a)

    Coccyx

    (b)

    Appendix

    (c)

    Thick hair

    (d)

    Nictitating membrane

  5. _______ is the only planet in the Goldilock. zone.

    (a)

    Jupiter

    (b)

    Mars

    (c)

    Earth

    (d)

    Venus

  6. Paleobotany is derived from Greek words Paleon that means _________.

    (a)

    old

    (b)

    new

    (c)

    past

    (d)

    aged

  7. 5 x 1 = 5
  8. The characters developed by the animals during their life time, in response to the environmental changes are called ______________.

    ()

    adaptation

  9. The forelimb of bat and human are examples of ______________ organs.

    ()

    homologous

  10. The theory of natural selection for evolution was proposed by ____________

    ()

    Charles Darwin

  11. _______is a fossil bird.

    ()

    Archaeopteryx

  12. _______ is a living fossil.

    ()

    Ginko biloba

  13. 5 x 1 = 5
  14. Atavism

  15. (1)

    radiocarbon dating

  16. Analogous organs

  17. (2)

    Lamarck

  18. Wood park

  19. (3)

    Thiruvakkarai

  20. W.F. Libby

  21. (4)

    rudimentary tail and thick hair on the body

  22. Giraffe

  23. (5)

    a wing of a bat and a wing of an insect

    2 x 1 = 2
  24. What is the name of Study of fossils?

    ()

    Palaeontology.

  25. A connecting link between" reptiles and birds.

    ()

    Archaeopteryx.

  26. 6 x 2 = 12
  27. Which organism is considered to be the fossil bird?

  28. What is the study of fossils called?

  29. Explain Biogenesis.

  30. Explain Atavism?

  31. What is Paleobotany?

  32. Define a fossil

  33. 4 x 4 = 16
  34. Why is Archaeopteryx considered to be a connecting link?

  35. Define Ethnobotany and write its importance.

  36. How can you determine the age of the fossils?

  37. Explain Use and Disuse theory.

  38. 2 x 7 = 14
  39. Natural selection is a driving force for evolution-How?

  40. How does fossilization occur in plants?

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