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प्रश्न
Explain the importance of nitrogen of the air for plant growth.
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उत्तर
Nitrogen of air is converted to soluble nitrogenous compounds in the soil in the presence of air and moisture. These are absorbed by plants and converted to plant proteins.
संबंधित प्रश्न
What are the causes of air pollution?
Write ‘True’ or ‘False’ in front of following statement.
The trapping of solar heat energy in the earth’s atmosphere is called greenhouse effect.
Tick (√) the most appropriate answer.
The presence of water vapour in air is essential for :
Give reason:
A burning candle stops burning if covered with a glass tumbler
Fill in the blanks
Plants and animals maintain the balance of carbon ___________and _________ in the air.
Complete the statement given below by filling in the blank with the correct word from the words given:
The product formed which is common to both combustion and respiration is ______.
How will you prove that soil contains air in it?
List uses of oxygen.
Can you guess why fire extinguishers throw a stream of carbon-di-oxide while putting - off the fire?
Why does a lump of cotton wool shrink in water?
