EASY
9th CBSE
IMPORTANT
Earn 100

Choose the plant’s micronutrients and macronutrients from the following: Iron, Chlorine, Sulphur, Copper, Nitrogen, Calcium, Manganese, Potassium, Zinc, Magnesium, Molybdenum, Phosphorus.

Important Questions on Improvements in Food Resources

EASY
9th CBSE
IMPORTANT
Science for Ninth Class (Part-3) Biology>Chapter 1 - Improvements in Food Resources>REVISION QUESTIONS>Q 6
What are advantages of using manure?
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class (Part-3) Biology>Chapter 1 - Improvements in Food Resources>REVISION QUESTIONS>Q 7
Give two limitations of using manure.
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class (Part-3) Biology>Chapter 1 - Improvements in Food Resources>REVISION QUESTIONS>Q 8
Compare the use of manures and fertilizers in maintaining soil fertility.
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class (Part-3) Biology>Chapter 1 - Improvements in Food Resources>REVISION QUESTIONS>Q 9
Write down two advantages of fertilizer over manure.
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class (Part-3) Biology>Chapter 1 - Improvements in Food Resources>REVISION QUESTIONS>Q 10
During the downpour in a village, the rainwater carried away excess of nitrogenous and other compounds present in the soil to a pond. How will they affect the growth of algae and phytoplankton in the pond?
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class (Part-3) Biology>Chapter 1 - Improvements in Food Resources>REVISION QUESTIONS>Q 11
Explain the term eutrophication with suitable example.
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class (Part-3) Biology>Chapter 1 - Improvements in Food Resources>REVISION QUESTIONS>Q 12
How does chemical nature of the soil change due to continue use of chemical fertilizers?
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class (Part-3) Biology>Chapter 1 - Improvements in Food Resources>REVISION QUESTIONS>Q 13
Explain various methods of fertilizer application.