Entry Test MCQ :: MCAT - SAMPLE PAPER
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| 41. |
Ozone depletion occurs commonly due to |
| A. |
Carbon dioxide |
B. |
Chlorofluorocarbons |
| C. |
UV rays |
D. |
Deforestation |
Answer: Option B
Explanation:
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| 42. |
The productivity of aquatic ecosystem is basically determined by light and |
Answer: Option D
Explanation:
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| 43. |
Ecosystem not found in Pakistan is |
| A. |
Tropical rain forest |
B. |
Temperate deciduous forest |
| C. |
Grassland |
D. |
Tundra |
Answer: Option A
Explanation:
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| 44. |
Annual rainfall in grassland is about |
| A. |
More than 2500 mm |
B. |
750-1500 mm |
| C. |
250-750 mm |
D. |
Less than 250 mm |
Answer: Option C
Explanation:
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| 45. |
Which of the following is most constant abiotic component of ecosystem |
Answer: Option D
Explanation:
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| 46. |
Conversion of ammonia or ammonium ion into nitrites during nitrogen cycle occurs due to |
| A. |
Rhizobium |
B. |
Nitrosomonas |
| C. |
Nitrobacter |
D. |
Pseudomonas |
Answer: Option B
Explanation:
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| 47. |
_______ supported theory of special creation |
| A. |
Linnaeus |
B. |
Aristotle |
| C. |
Mendel |
D. |
Lamarck |
Answer: Option A
Explanation:
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| 48. |
In Hardy-Weinberg formula P2 represents frequency of |
| A. |
Recessive allele |
B. |
Dominant allele |
| C. |
Homozygous dominant individual |
D. |
Homozygous recessive individual |
Answer: Option C
Explanation:
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| 49. |
Humming bird is an example of |
| A. |
Cold blooded animal |
B. |
Ectotherm |
| C. |
Endotherm |
D. |
Heterotherm |
Answer: Option D
Explanation:
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| 50. |
In condition of high temperature, following does not occur or occurs at low level |
| A. |
Vasodilation |
B. |
Activation of sweat glands |
| C. |
Thermogenesis |
D. |
Evaporative cooling |
Answer: Option C
Explanation:
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