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CSS :: Organic Evolution


81.  Mutations in a population:
A. Always led to evolution B. Never led to evolution
C. Often led to evolution D. Led to none of these

82.  Palaeozoic era does not include:
A. Cambrian period B. Ordovician period
C. Triassic period D. Silurian period

83.  Dominant protozoans during proterozoic era were:
A. Radiolarians B. Mastigophores
C. Ciliates D. Sarcodines

84.  Trilobites and Brachiopods were dominant during:
A. Cambrian period B. Silurian period
C. Devonian period D. Permian period

85.  Cephalopod Molluscs were dominant during:
A. Cambrian period B. Ordovician period
C. Silurian period D. Permian period

86.  Chordates as lower fishes in fresh water appeared in:
A. Cambrian period B. Silurian period
C. Ordovician period D. Permian period

87.  Terrestrial Colonization started during:
A. Ordovician period B. Silurian period
C. Permian period D. Cambrian

88.  The fishes dominated during:
A. Ordovician period B. Silurian period
C. Permian period D. Devonian period

89.  Amphibians were at climax during:
A. Silurian period B. Devonian period
C. Carboniferous period D. Permian period

90.  Reptiles dominated during:
A. Mesozoic era B. Cenozoic era
C. Paleozoic era D. Proterozoic era




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