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12th Standard Bio-Zoology English Medium Evolution Reduced Syllabus Important Questions 2021

12th Standard

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Biology

Time : 01:00:00 Hrs
Total Marks : 100

    Multiple Choice Questions

    15 x 1 = 15
  1. Who published the book “Origin of species by Natural Selection” in 1859?

    (a)

    Charles Darwin

    (b)

    Lamarck

    (c)

    Weismann

    (d)

    Hugo de Vries

  2. Fossils are generally found in

    (a)

    igneous rocks

    (b)

    metamorphic rocks

    (c)

    volcanic rocks

    (d)

    sedimentary rocks

  3. Evolutionary history of an organism is called

    (a)

    ancestry

    (b)

    ontogeny

    (c)

    phylogeny

    (d)

    paleontology

  4. Which period was called “Age of fishes”?

    (a)

    Permian

    (b)

    Triassic

    (c)

    Devonian

    (d)

    Ordovician

  5. The Neanderthal man had the brain capacity of

    (a)

    650 – 800cc

    (b)

    1200cc

    (c)

    900cc

    (d)

    1400cc

  6. Carbon dioxide in the primitive earth is said to have been formed from ___________

    (a)

    Methane & Oxygen

    (b)

    Methane & Ammonia

    (c)

    Carbon and Oxygen

    (d)

    Carbon & Methane

  7. _____________ is called age of Invertebrates

    (a)

    Cambrian

    (b)

    Devonian

    (c)

    Pennsylvanian

    (d)

    Mississippian

  8. Choose the correct sequence

    (a)

    Ordovician, Triassic, Permian, Cretaceous

    (b)

    Devonian, Permian, Cretaceous, Cambrian

    (c)

    Devonian, Triassic, Cretaceous, Ordovician

    (d)

    Silurian, Devonian, Permian, Triassic

  9. Lamarck theory was disproved by _______________

    (a)

    Weinberg

    (b)

    August Weismann

    (c)

    Haeckel

    (d)

    Wallace

  10. All the following provided the energy for chemical reaction in the primitive earth. Except:

    (a)

    Rain

    (b)

    Lightning

    (c)

    UV radiations

    (d)

    volcanic activity

  11. According to Neo Darwinism change in the frequency of genes in population arise due to all. Except.

    (a)

    Natural selection

    (b)

    Mutation

    (c)

    Struggle for existence

    (d)

    Variation

  12. Rearrange the six periods of the Eva Paleozoic from the oldest to the youngest in correct order.
    (a) Devonian
    (b) Ordovician
    (c) Cambrian
    (d) Putman
    (e) Carboniferous
    (f) Silurian

    (a)

    Cambrian ⟶ Ordovician  ⟶ Silurian  ⟶ Devonian  ⟶ Carboniferous  ⟶ Permian

    (b)

    Ordovician  ⟶ Devonian  ⟶ Silyrian  ⟶ Permian  ⟶ Carboniferous  ⟶ Cambrian

    (c)

    Silurian  ⟶ Carboniferous  ⟶ Devonian  ⟶ Cambrian  ⟶ Ordovician  ⟶ Silurian

    (d)

    Devonian  ⟶ Ordovician ⟶ Cambrian  ⟶ Carboniferous  ⟶ Silurian  ⟶ Permian

  13. Hardy Weinberg's assumption includes all. Except:

    (a)

    No mutation

    (b)

    No natural selection

    (c)

    Random mating

    (d)

    Very small population

  14. Failure in fertilization due to differences in chromosome numbers _____________

    (a)

    Physiological isolation

    (b)

    Chromosomal mutation

    (c)

    Mechanical isolation

    (d)

    Cytological isolation

  15. Heritable changes in or more characteristics of a population of _____________ from one generation to other is called evolution.

    (a)

    Individuals

    (b)

    species

    (c)

    genus

    (d)

    organisms

  16. 2 Marks

    10 x 2 = 20
  17. List out the major gases seems to be found in the primitive earth.

  18. Differentiate between divergent evolution and convergent evolution with one example for each.

  19. Mention the main objections to Darwinism.

  20. What are molecular clocks?

  21. What is the view ofNeo Lamarckism?

  22. What is paleontology?

  23. Name the five basic factors involved is the process of organic evolution according to modern synthetic theory.

  24. Name the types of natural selection.

  25. Wing of a cockroach and the wing of parrot. What do you infer from this statement with reference to evolution?

  26. Name the scientists who propounded the following theories.
    (a) Mutation theory
    (b) Chemical theory of evolution

  27. 3 Marks

    10 x 3 = 30
  28. Darwin's finches and Australian marsupials are suitable examples of adaptive radiation – Justify the statement

  29. Who disproved Lamarck’s Theory of acquired characters? How?

  30. Differentiate between the eating habit and brain size of Australopithecus and Ramapithecus.

  31. Define evolution.

  32. How can we determine the age of fossils?

  33. Differentiate between mould and cast

  34. What is artificial selection?

  35. What is the genetic reason for evolution of Darwin's finches?

  36. What is Sewall Wright effect or Genetic drift?

  37. State Hardy Weinberg's law.

  38. 5 Marks

    7 x 5 = 35
  39. How does Neanderthal man differ from the modern man in appearance?

  40. Mention any three similarities found common in Neanderthal man and
    Homo sapiens.

  41. Explain the theory of chemical evolution.

  42. Write about the two principles of Lamarck's theory.

  43. Explain about the objections to Darwinism.

  44. Explain Oparin - Haldane hypothesis on evolution.

  45. Give a detailed account of Modern Synthetic Theory.

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