Hardy-Weinberg's Principles Test

Hardy-Weinberg's Principles

This is online test 02 for CBSE class 12 Biology Evolution (Hardy-Weinberg's principles).. There are 10 questions in this test with each question having around four answer choices.

Questions & Answers

1
Founder effect is the
  • A
    Small change in the allele frequency to become different species.
  • B
    All of the above
  • C
    Large scale change in allele frequency to become different species.
    Correct
  • D
    Stabilization of gene of a population
2
Which of the following are difficult to explain in terms of natural selection?
  • A
    A bird issues a warning cry that puts it at greater risk of being noticed by a predator
  • B
    Some traits appear to have no adaptive value
    Correct
  • C
    Male deer evolve antlers that are not used to defend themselves against predators
  • D
    Male peacocks evolve tail feathers that would appear to make them more rather than less vulnerable to predators
3
The process in which heritable variations enabling better survival are enabled to reproduce and leave greater number of progeny is called
  • A
    Natural selection
    Correct
  • B
    Mutation
  • C
    Genetic drift
  • D
    Founder effect
4
Assertion- Evolution is a continuous process that takes millions of years for speciation. Reason- During evolution small variation accumulates guided by natural selection that leads to speciation.
  • A
    Both assertion and reason are incorrect
  • B
    Assertion is correct but explanation is wrong
  • C
    Assertion is correct but reason does not explain assertion
  • D
    Both assertion and reason are correct
    Correct
5
Genetic drift
  • A
    Is random change in gene frequency
    Correct
  • B
    Has nothing in common with inbreeding
  • C
    Is an orderly change in gene frequency
  • D
    Produces greatest fluctuations in large population
6
Presence of different types of beaks in finches of Galapgos islands adapted to different feeding habits provides evidence of
  • A
    Natural selection
    Correct
  • B
    Intraspecific competition
  • C
    Interspecific variations
  • D
    Interspecific competition
7
Which of the following is the example of adaptive radiation?
  • A
    Light and dark winged moths
  • B
    Only Australian marsupials
  • C
    Darwin finches and Australian marsupials
    Correct
  • D
    Only Darwin finches
8
Picture shown below is example of:-
Question 8 figure 1
  • A
    Convergent evolution of Australian marsupials and placental mammals
    Correct
  • B
    Homologous organs of both animals
  • C
    Analogous organs of both animals
  • D
    Divergent evolution of Australian marsupials and placental mammals
9
Statement I: When more than one adaptive radiation appeared in isolated geographical area it called a convergent evolution. Statement II: Bats and birds are example of adaptive radiation. Statement III: Tiger cat, kangaroo, wombat and sugar gliders are example of Australian marsupials.
  • A
    Statement I and III is correct
    Correct
  • B
    Statement II and III is correct
  • C
    All statements are correct
  • D
    Statement I and II is correct
10
Assertion: When migration of a section of population to another occurs, gene frequencies change in the original as well as in the population. Reason: There would be a gene flow if this gene migration happens multiple times.
  • A
    Both assertion and reason are incorrect
  • B
    Both assertion and reason are correct
    Correct
  • C
    Assertion is incorrect but reason is correct
  • D
    Assertion is correct but reason is incorrect