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Human evolution began approximately 7 co...

Human evolution began approximately 7 corre years. Ago.

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(i) Last dinosaurs disappeared approximately seven crore years ago.
(ii) At that time, monkey like animals were said to be evolved from some ancestors who were more or less similar to the modern lemurs.
(iii) Thus, human evolution began approximately seven crore years ago.
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Knowledge Check

  • Human evolution occurred in ____era

    A
    Paleozoic
    B
    Cenozoic
    C
    Mesozoic
    D
    Precambrain
  • (i) According to theory of chemical evolution the perimitive atmosphere was oxygen (ii) Protista was the ancestral forms of modern bacteria. (iii) Woolly mammoth which lived years ago was available in petrified remains. (iv) Four chambered heart is found in crocodiles.

    A
    i and iv
    B
    ii and iv
    C
    i and iii
    D
    iii and iv
  • Human genome is approximately said to have "_________" base pairs.

    A
    3 `xx10^(8)`bp
    B
    3.4 `xx10^(9)`bp
    C
    3.2 `xx10^(7)` bp
    D
    3 .3 `xx 10^(9)` bp
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