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Evolution Test - 21

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Evolution Test - 21
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Which era is dubbed as the age of prokaryotic microbes?
    Solution
    The geological time scale of life on earth is divided into four major units: Eons, Eras, Periods, and Epochs. The first three Eons are collectively called Precambrian. It is the stretch of time that involves the formation of the earth and the appearance of life on earth. Precambrian is divided into Hadean eon (formation of the earth), Archaean eon (appearance of prokaryotes), Proterozoic eon (stable continents with eukaryotes). The final eon is Phanerozoic, which means revealed or visible life and constitutes the age of multicellular organisms.
    So, option C is correct.
  • Question 2
    1 / -0
    The cenozoic era is known as
    Solution
    The Cenozoic Era is the most recent and advanced era. It extends from 65 million years ago to the present. It is also known as the age of mammals because the mammals were the largest existing land animals in the era. It also had the most advanced and the diverse group of flora so it is also considered as an era of modern flora. Grasses also evolved during the Cenozoic.
    So, the correct answer is option A.
  • Question 3
    1 / -0
    Evolution of different species in a given area starting from a point and spreading to other geographical area is known as
    Solution
    Process of evolution of different species in a given area starting from a point and radiating to other area of geography (habitats) is called adaptive radiations.  Example : Darwinian finches and Australian marsupials.
  • Question 4
    1 / -0
    Evolutionary convergence is characterized by
    Solution
    Convergent evolution describes the independent evolution of similar features in species of different lineages.
  • Question 5
    1 / -0
    Development of unrelated groups of animals along parallel lines in adaptation to a similar environment is called
    Solution
    When different groups of animals show similar adaptations due to similar environmental conditions, it is called convergent evolution, which is caused by adaptive convergence.
    So, the correct answer is 'Adaptive convergence'
  • Question 6
    1 / -0
    The brain capacity of Homo erectus was
    Solution
    Homo erectus is an extinct species of hominin that lived throughout most of the Pleistocene. The brain capacity of Homo erectus was 800 to 1300 cc.
    So, the correct answer is '800 to 1300 cc'
  • Question 7
    1 / -0
    Evolution in which the animals of two different gene ecology show too much similarity with one another, as a result of adaptation is termed as

    Solution
    When two animals/plants belonging to two distinct lineages of evolution, exhibit similarities with respect to adaptation to a certain environmental condition is called convergent evolution.
    Example, wings of birds and insects, they have different structures internally but perform the same function, that is adaptation to aerial habitat.
    So, the correct answer is 'convergent evolution'
  • Question 8
    1 / -0
    Radiations with successful adaptations in case of insects is a result of
    Solution
    Macro evolution is a major evolutionary change, especially with regard to the evolution of whole taxonomic groups over long periods of time.
    Eg: beetle genus Blepharida and beetle genus Bursera

  • Question 9
    1 / -0
    Which primitive man resembles with modern man?
    Solution
    Cro-Magnon man was the direct ancestor of modern man and were physically indistinguishable from modern races of human.

  • Question 10
    1 / -0
    Cro-Magnon man was
    Solution
    The Cro-Magnon man was considered as carnivorous. The fossil evidences in the form of skull and other bones indicate that the early humans were hunters and gatherers who relied on what was available in their immediate environment. So, they made use of the animals for food, clothing and the bones were used for making ornaments, weapons, tools, etc. Thus, the correct answer is option D.
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