SSC Worksheet for chapter-11 Improvement in Food Resources class 9

Worksheet For class 9

Find SSC Worksheet for chapter-11 Improvement in Food Resources class 9

CLASS-9

BOARD: SSC

BIOLOGY Worksheet - 11

TOPIC: Improvement in Food Resources

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1. Which of these is a macro nutrient?
   1. Copper
   2. Iron
   3. Chlorine
   4. Magnesium
2. Choose the abiotic factor.
   1. Moisture content
   2. Insects
   3. Birds
   4. Fungi
3. The chief cereal crop of India is
   1. Wheat
   2. Sorghum
   3. Maize
   4. Rice
4. What do we get from cereals, pulses, fruits and vegetables?
5. How do biotic and abiotic factors affect crop production?
6. What are the desirable agronomic characteristics for crop improvements?
7. What are macro-nutrients and why are they called macronutrients?
8. Explain any one method of crop production which ensures high yield.
9. Why are manure and fertilizers used in fields?
10. Explain any two methods of irrigation.