| 1 |
Ozone is a layer of gases in ............. atmosphere of the Earth. |
- A. Upper
- B. Lower
- C. Middle
- D. Inner
|
| 2 |
Carbon cycle and ............. cycle are teh processes in whihc these minerals circulate between the organisms and the environment. |
- A. Hydrogen
- B. Iodine
- C. Oxygen
- D. Nitrogen
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| 3 |
--------occupy the b ase of pyramid. |
- A. Producers
- B. Primary canivores
- C. Herbivores
- D. Top carnivores
|
| 4 |
Consumers that actively hunt other organism are called. |
- A. Prey
- B. Competitor
- C. Predator
- D. Symbiont
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| 5 |
A food chain starts from the.......... |
- A. Primary carnivores
- B. Herbivores
- C. Producers
- D. Top carnivores
|
| 6 |
The phenomenon which doe snot lead to global warming. |
- A. Green hous effect
- B. Ozone depletion
- C. Deforestation
- D. Photosynthesis
|
| 7 |
A relationship where two species live togetehr closely is called. |
- A. Mutualism
- B. Commensalism
- C. Symbiosis
- D. Hebitate
|
| 8 |
Green house gases is |
- A. Carbon di oxide
- B. Methane
- C. Oxides of nitrogen
- D. All these
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| 9 |
A relationship where two species live together closely is called |
- A. Symbiosis
- B. Predation
- C. Competitor
- D. None of these
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| 10 |
Half of the increase in atmospheric carbon dioxide concentrations in the last.............. years has occured since 1980 |
- A. 100
- B. 200
- C. 300
- D. 400
|