How plants get nutrients?

Important Questions on Improvements in Food Resources

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth Class (Part-3) Biology>Chapter 1 - Improvements in Food Resources>REVISION QUESTIONS>Q 4

Name the three most important nutrients required for plant growth.

EASY

9th CBSE

IMPORTANT

Science for Ninth Class (Part-3) Biology>Chapter 1 - Improvements in Food Resources>REVISION QUESTIONS>Q 5

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

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.