| 1 |
During the combustion of fossil fuel. Which gas is ener the atmosphere. |
- A. Nitrogen
- B. Oxygen
- C. Carbon di oxide
- D. Hydrogen
|
| 2 |
Which is the solution of environmental problems. |
- A. Reducing pollution
- B. Plantation
- C. Protection of endangered
- D. All these
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| 3 |
Th graphical epresentation of tropihic relationship oforaganisms in an ecosystem is called. |
- A. Food Chian
- B. Ecological pyramid
- C. Trophic level
- D. Predation
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| 4 |
Green house gases is |
- A. Carbon di oxide
- B. Methane
- C. Oxides of nitrogen
- D. All these
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| 5 |
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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| 6 |
A relationship where two species live togetehr closely is called. |
- A. Mutualism
- B. Commensalism
- C. Symbiosis
- D. Hebitate
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| 7 |
The poisonous and harmsful substances which make the air unfavorable for life are called. |
- A. Solid pollutant
- B. Air pollutant
- C. Water pollutant
- D. Acid Rain
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| 8 |
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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| 9 |
------------- through the food chain is one of the most important functionsof an ecosystem in maintaining balance of nature. |
- A. Waisting of energy
- B. Destroy fo energy
- C. Transfer of energy
- D. Produce of energy
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| 10 |
Energy of ............ is trapped as chemicla energy by producers. |
- A. Moon
- B. Atom
- C. Sun
- D. Earth
|