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LTL C12 BIO Test Series
LTL C12 Bio T5 FP EVOLUTION
Greetings from LEARN TO LEAD ACDEMY !!!
The number of attempts remaining is 2
Greetings from LEARN TO LEAD ACADEMY !!! All the best !!!
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2. According to one of the most widely accepted theories, earth's atmosphere before origin of life was
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3. According to Oparin, which one of the following was not present in the primitive atmosphere of the earth ?
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4. The first non-cellular form of life could have originated __________ billion years back.
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5. The ship used by Charles Darwin during his sea voyages was
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6. Fitness according to Darwin refers to
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7. Alfred Wallace worked in
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8. Which one of the following correctly describes the homologous structures ?
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9. Which of the following statements is true?
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10. Which one of the following options gives one correct example each of convergent evolution and divergent evolution?
Convergent evolution Divergent evolution
(a) Eyes of octopus and mammals Bones of forelimbs of vertebrates
(b) Thorns of Bougainvillea and
tendrils of Cucurbita Wings of butterfly and birds
(c) Bones of forelimbs of vertebrates Wings of butterfly and birds
(d) Thorns of Bougainvillea and
tendrils of Cucurbita Eyes of octopus and mammals
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11. Following diagram provides an example of
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12. Read the following statements carefully and select the correct ones.
(i) Alfred Wallace, a naturalist who worked in Malay Archipelago had also come to similar conclusions as Darwin around the same time.
(ii) August Weismann by careful experimentation demonstrated that life comes only from pre-existing life.
(iii) The organs which have the same fundamental structure but are different in functions are called homologous organs.
(iv) Rate of appearance of new form is inversely proportional to life span of organism.
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13. Which of the following are the two key concepts of Darwinian theory of evolution?
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14. "Human population grows in geometric ratio while food materials increase in arithmetic proportion." It is a statement from
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15. Single step large mutation leading to speciation is also called
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16. Match column I with column II and select the correct option from the given codes.
Column I Column II
A. Saltation (i) Darwin
B. Formation of life was preceded
by chemical evolution (ii) Louis Pasteur
C. Reproductive fitness (iii) de Vries
D. Life comes from pre-existing life (iv) Oparin and Haldane
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17. Match column I with column II and select the correct option from the given codes.
A. Wallace (i) Essay on population
B. Malthus (ii) Biston
C. Hardy-Weinberg law (iii) p² + q² + 2pq = 1
D. Industrial melanism (iv) Co-proposer of Natural selection
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18. Hardy-Weinberg equilibrium is known to be essentially affected by factors like, gene flow, genetic drift, mutation, genetic recombination and
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19. Match column I with column II and select the correct option from the codes given below.
A. Mutation (i) Changes in population's frequencies due to chance alone
B. Gene flow (ii) Differences in survival and reproduction among variant individuals
C. Natural selection (iii) Immigration, emigration change allele frequencies
D. Genetic drift (iv) Source of new alleles
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20. Which of the following statements is correct?
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21. Identify the correct arrangement of periods of Palaeozoic era in ascending order in geological time scale.
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22. Golden age of reptiles was
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23. The primate which existed 15 mya was
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24. Which of the following statements is incorrect?
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25. Which of the following appeared during ice age between 75,000-10,000 years ago?
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26. Abiogenesis theory of origin supports
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27. The first life originated
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28. The theory of natural selection was given by
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29. Phenomenon of 'industrial melanism' demonstrates
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30. The diversity in the type of beaks of finches adapted to different feeding habits on the Galapagos Islands, as observed by Darwin, provides evidence for
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31. Which is the correct order of increasing geological time scale for a hypothetical vertebrate evolution?
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32. Amphibians were dominant during------------ period.
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33. One of the possible early sources of energy was/were
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34. The effects of genetic drift are more marked in
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35. Animal husbandry and plant breeding programmes are the examples of
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36. Evolution of life shows that life forms had a trend of moving from
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37. Fossils are generally found in
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38. For the MN-blood group system, the frequencies of M and N alleles are 0.7 and 0.3, respectively. The expected frequency of MN-blood group bearing organisms is likely to be
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39. The most accepted line of descent in human evolution is
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40. Which of the following is an example for link species?
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Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
41. Assertion : Louis Pasteur showed that in flask open to air, new living organisms appeared in the heat killed yeast culture.
Reason: Life arise from pre-existing life.
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42. Assertion : Thorns and tendrils of Bougainvillea and Cucurbita represent homology.
Reason: Homologous organs have similar functions but are different in their structural details and origin.
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43. Assertion : Evolution is not a directed process in sense of determinism.
Reason: Evolution is a stochastic process based on chance events in nature and chance mutation in the organisms.
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44. Assertion : Darwin's finches of Galapagos islands have different types of modified beaks according to their food habits.
Reason: Adaptive radiation, leads to development of different functional structures from a common ancestral form
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45. Assertion: Neanderthal man is the intermediate between Ramapithecus and Homo erectus.
Reason: Neanderthal man, with brain size of about 1400 c.c., used hides to protect their body.
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The average score is 53%
