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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
Photosynthesis is a process in which plants
विकल्प
take in oxygen and give out carbon dioxide
take in carbon dioxide and give out oxygen
take in nitrogen and give out oxygen
none of the above
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उत्तर
take in carbon dioxide and give out oxygen
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संबंधित प्रश्न
What was the ancient belief regarding the nature of matter ?
Write ‘True’ or ‘False’ in front of following statement.
Atmospheric nitrogen is directly absorbed by the plants to form plant proteins.
How is greenhouse effect produced?
What is wind?
Name two important processes supported by oxygen present in air.
Give two uses of the following component present in air:
oxygen
What is meant by the term ‘atmosphere’? State the role played by the atmosphere for the survival of mankind.
Answer in your own words.
What are the various constituents of air? Write their uses.
How is light scattered by the air?
Match the following:
| 1. | Layer of air | a. | Hand fan |
| 2. | Electrical energy | b. | 21% |
| 3. | Nitrogen | c. | Windmill |
| 4. | Oxygen | d. | Atmosphere |
| 5. | Palm Trees | e. | 78% |
