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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 |
Answer: Option C
Explanation:
|
82. |
Palaeozoic era does not include: |
A. |
Cambrian period |
B. |
Ordovician period |
C. |
Triassic period |
D. |
Silurian period |
Answer: Option C
Explanation:
|
83. |
Dominant protozoans during proterozoic era were: |
A. |
Radiolarians |
B. |
Mastigophores |
C. |
Ciliates |
D. |
Sarcodines |
Answer: Option A
Explanation:
|
84. |
Trilobites and Brachiopods were dominant during: |
A. |
Cambrian period |
B. |
Silurian period |
C. |
Devonian period |
D. |
Permian period |
Answer: Option A
Explanation:
|
85. |
Cephalopod Molluscs were dominant during: |
A. |
Cambrian period |
B. |
Ordovician period |
C. |
Silurian period |
D. |
Permian period |
Answer: Option B
Explanation:
|
86. |
Chordates as lower fishes in fresh water appeared in: |
A. |
Cambrian period |
B. |
Silurian period |
C. |
Ordovician period |
D. |
Permian period |
Answer: Option C
Explanation:
|
87. |
Terrestrial Colonization started during: |
A. |
Ordovician period |
B. |
Silurian period |
C. |
Permian period |
D. |
Cambrian |
Answer: Option B
Explanation:
|
88. |
The fishes dominated during: |
A. |
Ordovician period |
B. |
Silurian period |
C. |
Permian period |
D. |
Devonian period |
Answer: Option D
Explanation:
|
89. |
Amphibians were at climax during: |
A. |
Silurian period |
B. |
Devonian period |
C. |
Carboniferous period |
D. |
Permian period |
Answer: Option C
Explanation:
|
90. |
Reptiles dominated during: |
A. |
Mesozoic era |
B. |
Cenozoic era |
C. |
Paleozoic era |
D. |
Proterozoic era |
Answer: Option A
Explanation:
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