CSS :: Zoology Scope and Origin Of Life
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51. |
Carbondioxide of the present atmosphere is entirely produced by: |
A. |
Forest fire |
B. |
Respiration of animals and plants |
C. |
Industrial smoke |
D. |
Microbial activity |
Answer: Option B
Explanation:
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52. |
Miller synthesized simple amino acids from: |
A. |
Hydrogen, Ammonia, Methane and Water Vapours |
B. |
Ammonia, Methane, Cyanide and Oxygen |
C. |
Methane, Cyanide, Hydrogen and Oxygen |
D. |
Hydrogen, Oxygen Nitrogen and water |
Answer: Option A
Explanation:
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53. |
Nucleoproteins most probably gave the first sign of: |
A. |
Life |
B. |
Evolution |
C. |
Matation |
D. |
Speciation |
Answer: Option D
Explanation:
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54. |
Oxygen present in the atmosphere has been formed by: |
A. |
Evaporation of sea water |
B. |
Photosynthesis by plants |
C. |
Putrefaction of animals and plants |
D. |
Metabolism of micro-organisms |
Answer: Option B
Explanation:
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55. |
It can be concluded on the basis of Miller's experiment that: |
A. |
Organic compounds contain hydrogen, oxygen and carbon |
B. |
Complex organic compound were first formed on the primitive earth |
C. |
Life originated in form of amino acid |
D. |
The organic compound can be synthesized in the laboratory |
Answer: Option C
Explanation:
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56. |
Most important condition for the origin of life is presence of: |
A. |
Oxygen |
B. |
Nittogen |
C. |
Water |
D. |
Carbon |
Answer: Option B
Explanation:
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57. |
Life originated about: |
A. |
One billion years ago |
B. |
Three billion years ago |
C. |
Six billion years ago |
D. |
Nine billion years ago |
Answer: Option B
Explanation:
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58. |
Louis Pasteur is known for: |
A. |
Germ Theory of disease |
B. |
Germ Plasm Theory |
C. |
Recapitulation Theory |
D. |
Cell Theory |
Answer: Option A
Explanation:
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59. |
Life originated: |
A. |
In air |
B. |
On land |
C. |
In water |
D. |
In all of these |
Answer: Option C
Explanation:
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60. |
Which of the following must have evolved in the direction of "Origin of Life": |
A. |
Proteins and amino acids |
B. |
Proteins and nucleic acids |
C. |
Urea and proteins |
D. |
None of these |
Answer: Option A
Explanation:
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