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Evolution Test - 39

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Evolution Test - 39
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Weekly Quiz Competition
  • Question 1
    1 / -0
    The dominant plant groups of coenozoic era is
    Solution
    Flowering plants angiosperms were dominant in the Cenozoic era. It saw a lot of plants like ferns, conifers, plants, etc. it also witnessed the extinction of dinosaurs and the rise of mankind.
    So, option D is the correct answer.
  • Question 2
    1 / -0
    Panspermia are ________.
    Solution
    • The theory of panspermia states that protoplasm comes to the Earth's surface from the universe in the form of spores (panspermia) with cosmic dust and evolves into various life forms. 
    • This theory was proposed by Richter in 1865. Thus, panspermia are spores.
    • This theory was later rejected.

    Hence, the correct answer is option B, i.e., Life spores.
  • Question 3
    1 / -0
    T. R. Malthus wrote
  • Question 4
    1 / -0
    Which were dominant in mesozoic?
    Solution
    Dinosaurs were seen in the Mesozoic era in the Cretaceous period. The Mesozoic era lasted for more than 180 million years. During this period, dinosaurs dominated the land. The entire Mesozoic era is divided into 3 periods:
    1. Triassic
    2. Jurassic and
    3. Cretaceous age.
    So, option A "Dinosaurs" is the correct answer.
  • Question 5
    1 / -0
    Darwin's finches show
    Solution
    Darwin's finches are a classic example of adaptive radiation. An adaptive radiation is defined as an event in which lineage rapidly diversifies, with the newly formed lineages evolving different adaptation.
  • Question 6
    1 / -0
    Dinosaurs were abundant in
    Solution
    Dinosaurs appeared during the Triassic period (225 million yrs ago) of Mesozoic era and Jurassic period (180 million yrs ago) is marked by diversification of dinosaurs, large dinosaurs dominated the earth. Permian (285-250 million yrs ago) and Devonian (395 million yrs ago) periods of Palaeozoic era occurred much before Triassic period when dinosaurs appeared. Pleistocene epoch of Cenozoic era started 2.6 million years ago and ended 0.1 million years ago.
    So, the correct answer is option A.
  • Question 7
    1 / -0
    According to studies, the humans first originated in _____________
    Solution
    According to the studies done, regardless of where we have lived thousand years ago, we all come from Africa. Hence, Africa is considered as the origin of humans thousands of years of ago. Therefore, (d) is the correct answer.
  • Question 8
    1 / -0
    Biological concept of species is mainly based on
    Solution
    The biological species concept groups the members of the same species organisms that can potentially interbreed to produce fertile offspring. It groups the individuals on the basis of their reproductive isolation, which in turn maintain the morphological differences among the reproductively isolated individuals of the same habitat. It is not based on methods of reproduction. 
  • Question 9
    1 / -0
    The reptiles, like dinosaurs were dominant in ________ period.
    Solution
    The Jurassic period started 213 million years ago and lasted until 240 million years ago. This was the first period to have birds. Turtles and crocodiles increased in numbers and variety. New species of plesiosaur and ichthyosaur arose. On land, insects were thriving including ancestors of modern ants, bees, earwigs, flies and wasps. The first bird appeared and Dinosaurs ruled the land.
  • Question 10
    1 / -0
    Origin of life occurred in
    Solution
    Precambrian is the period of time that extends from about 4.6 billion years ago (the point at which Earth began to form) to the beginning of the Cambrian period, 541 million years ago. Origin of life occured in Precambrian. The earliest evidence for the advent of life includes Precambrian microfossils that resemble algae, cysts of flagellates. Hence, option A is correct.
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