| 1 |
The average rain fall in temperate deciduous forest is between |
- A. 600-1500 mm
- B. 650 -1500 mm
- C. 750-1500 mm
- D. 700 -1500 mm
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| 2 |
Clearance of vast areas of forest for lumber planting subsistence crops or grazing cattle is called as |
- A. Deforestation
- B. A-forestation
- C. Forestation
- D. Both a & b
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| 3 |
Which statement defines the net primary production in an ecosystem over a given time period? |
- A. The total amount of organic matter in the plants in excess of that used in respiration
- B. The total amount of organic matter used in respiration by all the organisms present
- C. The total amount of photosynthesis product from all plants
- D. The total amount of organic matter in all organisms present
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| 4 |
Which of the following is NOT recycled in ecosystem? |
- A. Carbon
- B. Sulphur
- C. Energy
- D. Water
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| 5 |
Ecosystem present on land or soil is called. |
- A. Terrestrial
- B. Atmosphere
- C. Lithosphere
- D. Both a and c
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| 6 |
Air is being polluted rapidly due to |
- A. Industrialization
- B. Automobiles
- C. Sewage
- D. Both a & b
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| 7 |
The producers in limnetic zone are |
- A. Amoebae
- B. Cyanobacteria
- C. Crustaceans
- D. Hydrilla
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| 8 |
The zone, rich in life, in a fresh water lake is called. |
- A. Littoral zone
- B. Profundal zone
- C. Limnetic zone
- D. Deseret
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| 9 |
Fresh water ecosystem covers less than. |
|
| 10 |
Northern coniferous forest are called. |
- A. Alpine
- B. Boreal
- C. Taiqa
- D. Prairles
|