Entry Test MCQ :: Major Ecosystems

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

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

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

4.  In which zone plant community is most diverse
A. Limnetic zone B. Littoral zone
C. Profundal zone D. All of these

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

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

7.  In polluted lake which organisms dominate the community
A. Fish B. Crustaceans
C. Phytoplanktons D. Blue green algae

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

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

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

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