Advertisements
Advertisements
प्रश्न
Explain the importance of nitrogen of the air for plant growth.
Advertisements
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 is air pollution ? What are the harmful effects of sulphur dioxide, nitrogen dioxide and hydrogen sulphide present in the air ?
What are the two ways in which nitrogen fixation occurs?
State three uses of water vapour in the air.
Statement given below is incorrect. Write the correct statement :
Symbiotic bacteria are present in nodules of cereal plants such as wheat.
Write ‘True’ or ‘False’ in front of following statement.
Water containing dissolved carbon dioxide can dissolve marble.
What do you understand by the term polluted air?
The diagrams below represents an experiment to show the presence of a component of air.
- State why air is sucked from – outlet ‘B’ and not from outlet “A”
- State why the air is sucked ‘slowly’ from the outlet “B”
- State the observation seen after completion of the experiment.
- State the reason for the above observation seen.
- Name another component which if present in air as a pollutant would have given a similar observation
Name the following:
The product of respiration released in exhaled air, other than carbon dioxide.
What is the presence of harmful substance in the air called?
State whether the following statement is true or false. If false, correct them.
Plants consume oxygen for respiration.
