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Evolution Test - 25

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Evolution Test - 25
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  • Question 1
    1 / -0
    Earliest reptiles evolved in the ............... period.
    Solution
    Palaeozoic era is also called as “era of ancient life”. It is divided into six periods, which are namely cambrian (520-505 million years ago), ordovician (505-430 million years ago), silurian (430-410 million years ago), devonian (410-360 million years ago), carboniferous (360-285 million years ago) and permian period (285-250 million years ago). 
    Carboniferous period (360-285 million years ago) of palaeozoic era is marked by origin of first reptiles that resembled lizards. 
  • Question 2
    1 / -0
    Evolution of unicellular organism was in the ....................... era.
    Solution
    Archaeozoic era occured before 2.5 billion years ago, when the only life forms were blue-green algae and bacteria. Evolution of unicellular organisms occurred during this era.
  • Question 3
    1 / -0
    Man evolved in
    Solution
    The Pliocene epoch  extends from 5.332 million to 2.588 million years before present. Man evolved in this era.
    So, the correct answer is 'Pliocene'

  • Question 4
    1 / -0
    Ancestral amphibians were tetrapods that evolved during
    Solution
    Upper (i.e. more recent) Devonian sediments contain fossil remains of salamander-like amphibians (or labyrinthodonts) that were often quite large, with short necks and heavy, muscular tails.
    So, the correct answer is 'devonian period'
  • Question 5
    1 / -0
    Similarity developed in distantly related groups as an adaptation to the same function is called as
    Solution
    Convergent evolution means distantly related groups have different forms of structures or adaptation for performing similar functions. 
    So, the correct answer is 'convergent evolution'.
  • Question 6
    1 / -0
    First mammals appeared in the period
    Solution
    Triassic period, in geologic time, the first period of the Mesozoic era. It began 252 million years ago. Reptiles increased in diversity and number, and the first dinosaurs appeared during this period along with the appearance of first mammals. Thus the correct answer is option A.
  • Question 7
    1 / -0
    Which one of the following period is largely associated with extinction of dinosaurs and the increase in flowering plants and reptiles?
    Solution
    Cretaceous period of Mesozoic era occurred on earth about 65-146 million years ago. During this period, the flowering plants appeared and became dominant, mass extinctions of marine life and some terrestrial life, including dinosaurs occurred and modern continents became well separated
    So, the correct answer is 'cretaceous'
  • Question 8
    1 / -0
    Being all mammals, whale, dolphins, bat, monkey and horse have some common characters but they also show conspicuous differences. This is due to phenomenon of
  • Question 9
    1 / -0
    What is ethnobotany?
  • Question 10
    1 / -0
    Who called birds as glorified reptiles?
    Solution
    It is generally believed that both mammals and birds are derived from reptiles. Archaeopteryx is a fossil bird showing both reptile and bird features. Hence birds were called glorified reptiles by Huxley. He was known as "Darwin's Bulldog" for his advocacy of Charles Darwin's theory of evolution.
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