| 1 |
The energy of the Sun in traped as chemical energy by. |
- A. Tertiary consumers
- B. Primary consumers
- C. Producers
- D. Secondary consumers
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| 2 |
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
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| 3 |
A symbiotic relationship in whihc both speciesl get benefit is called. |
- A. Commensalism
- B. Hebitate
- C. Mutualism
- D. Symbiosis
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| 4 |
Which factor is responsible for ecological imbalance. |
- A. Over hunting
- B. Change in water supply
- C. Migration
- D. All these
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| 5 |
During respiration by the animals, whihc gas is released into the atmosphere. |
- A. Nitrogen
- B. Oxygen
- C. Carbon Di oxide
- D. Hydrogen
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| 6 |
All the food chains are joined together to form ..... |
- A. Food web
- B. Ecologicla pyramid
- C. Tropicla level
- D. None of these
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| 7 |
A relationship where two species live togetehr closely is called. |
- A. Mutualism
- B. Commensalism
- C. Symbiosis
- D. Hebitate
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| 8 |
--------occupy the b ase of pyramid. |
- A. Producers
- B. Primary canivores
- C. Herbivores
- D. Top carnivores
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| 9 |
The feeding level of an organism in an ecosystem is called. |
- A. Food Web
- B. Food chain
- C. Trophical level
- D. Secession level
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| 10 |
Organism in ecologicla communits interact with one anothe rin....... major ways. |
- A. Two
- B. three
- C. Four
- D. Five
|