12 Questions
Why do farmers have to add manure to their fields?
To provide essential nutrients for plant growth
What is the purpose of adding urea to the soil in glass B in the activity described?
To provide nitrogen to the plants
What impact does continuous cultivation of crops have on the soil?
Makes the soil poor in nutrients
What is the source of manure used by farmers?
Decomposed plant or animal waste
What is the main difference between fertilisers and manure?
Fertilisers are man-made inorganic salts, while manure is a natural substance obtained by the decomposition of cattle dung and plant residues.
How does organic manure benefit soil compared to fertilisers?
Organic manure makes the soil porous due to which exchange of gases becomes easy and improves the texture of the soil.
Why is water essential for plants?
Water is important for proper growth and development of plants.
Where are nitrogen-fixing nodules commonly found?
In the roots of leguminous plants.
What is one key difference between manure and fertilisers?
Manure is organic, while fertilisers are chemical-based
Why is excessive use of fertilisers harmful to the soil?
It makes the soil less fertile and can lead to water pollution
How does the use of manure benefit the soil?
Improves soil texture, water retaining capacity, and replenishes nutrients
What is a method suggested in the text to replenish soil nutrients besides using manure?
Crop rotation by alternating different crops
Learn about the structures present in the nodules of roots of leguminous plants that have the ability to fix atmospheric nitrogen. Explore the differences between fertilizers and manure in terms of their composition and preparation methods.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
