Origin and Evolution of Life Book Back Questions

10th Standard EM

    Reg.No. :
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Science

Time : 00:40:00 Hrs
Total Marks : 25
    4 x 1 = 4
  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. The ‘use and disuse theory’ was proposed by __________.

    (a)

    Charles Darwin

    (b)

    Ernst Haeckel

    (c)

    Jean Baptiste Lamarck

    (d)

    Gregor Mendel

  3. Paleontologists deal with

    (a)

    Embryological evidences

    (b)

    Fossil evidences

    (c)

    Vestigial organ evidences

    (d)

    All the above

  4. The term Ethnobotany was coined by

    (a)

    Khorana

    (b)

    J.W. Harsbberger

    (c)

    Ronald Ross

    (d)

    Hugo de Vries

  5. 3 x 1 = 3
  6. The characters developed by the animals during their life time, in response to the environmental changes are called ______________.

    ()

    adaptation

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

    ()

    homologous

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

    ()

    Charles Darwin

  9. 5 x 1 = 5
  10. Atavism

  11. (1)

    caudal vertebrae and vermiform appendix

  12. Vestigial organs

  13. (2)

    Thiruvakkarai

  14. Homologous organs

  15. (3)

    radiocarbon dating

  16. Wood park

  17. (4)

    rudimentary tail and thick hair on the body

  18. W.F. Libby

  19. (5)

    a forelimb of a cat and a bat’s wing

    1 x 2 = 2
  20. Which organism is considered to be the fossil bird?

  21. 1 x 4 = 4
  22. Define Ethnobotany and write its importance.

  23. 1 x 7 = 7
  24. How do you differentiate homologous organs from analogous organs?

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