Entry Test MCQ :: Major Ecosystems
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1. |
Weather refers to |
A. |
Short-term fluctuations in temperature, cloud cover, wind and precipitation |
B. |
It prevails over periods of hrs or days |
C. |
Overall patterns of weather that prevail from year to year |
D. |
Both a and b |
Answer: Option D
Explanation:
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2. |
Which statement about hydrospheric ecosystem is incorrect? |
A. |
Salt water ocean and sea are the largest ecosystems on earth |
B. |
Salt water ecosystem covers about 75% earth surface |
C. |
Fresh water ecosystem covers less than 1% of earth surface |
D. |
It temperature is more moderate to support life |
Answer: Option B
Explanation:
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3. |
Productivity of an ecosystem is indicated by |
A. |
Number of plants in that ecosystem |
B. |
The density of that ecosystem |
C. |
Consumption of carbon dioxide and evolve of oxygen |
D. |
Both a and b |
Answer: Option D
Explanation:
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4. |
In which zone plant community is most diverse |
A. |
Limnetic zone |
B. |
Littoral zone |
C. |
Profundal zone |
D. |
All of these |
Answer: Option B
Explanation:
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5. |
Which statement about profundal zone is correct? |
A. |
Plants are unable to anchor but enough light penetrates to support photosynthesis |
B. |
Phytoplanktons in this region are cyanobacteria |
C. |
Decomposers and detritus feeders inhabit it |
D. |
Water lilies are abundant |
Answer: Option C
Explanation:
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6. |
Eutrophication is |
A. |
Process of decreasing nutrients by human activities |
B. |
Adequate nutrition accelerated by human activities |
C. |
Changing the trophic levels of an ecosystem by human activities |
D. |
Addition of more predators in an ecosystem |
Answer: Option B
Explanation:
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7. |
In polluted lake which organisms dominate the community |
A. |
Fish |
B. |
Crustaceans |
C. |
Phytoplanktons |
D. |
Blue green algae |
Answer: Option D
Explanation:
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8. |
Evolution of vascular bundles in plants and skeleton in animals is an adaptation for |
A. |
Hdrospheric ecosystem |
B. |
Aquatic ecosystem |
C. |
Terrestrial ecosystem |
D. |
All of these |
Answer: Option C
Explanation:
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9. |
Development of bark in plants and skin in animals is a method for |
A. |
Providing support |
B. |
Protection from enemies |
C. |
Reducing water loss |
D. |
Helping in food production |
Answer: Option C
Explanation:
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10. |
Which statement is incorrect? |
A. |
Average rainfall in temperate deciduous forests is 750-1500mm |
B. |
Temperature of coniferous alpine and boreal forests is upto 10 degrees |
C. |
Northern coniferous forests are called Taiga |
D. |
Coniferous forests located at high latitude are alpine |
Answer: Option D
Explanation:
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