9th – Biology :Topic: Improvement in food resources:Revision assignment

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A. Very short answer questions:

Q1. Define the following terms:

a) Photoperiod b) green manure c) organic farming d) concentrates e) roughage

Q2. Mention one advantage and one disadvantage of green revolution.

Q3. What nutrients do we get from: cereals and pulses?

Q4. How many nutrients are required in lesser quantities and what are they commonly called?

Q5. Why even excess application of manure does not cause pollution?

Q6. Give one disadvantage of fertilizer.

Q7. Name one crop which can tolerate water logging in field and one which cannot?

Q8. What happens when a matured wheat crop is irrigated?

Q9. A farmer grows gram crop between two cereal crops. What agricultural practice is being followed?

Q10. Give one word:

1) A toxic substance effective against insects.

2) A fungal disease of wheat crop 3) A common weed

4) A weedicide 5) One natural insecticide

Q11. Name one HYV of cow and one of buffalo.

Q12. Name two exotic varieties of cow.

Q13. What are the indications for diseased cattle?

Q14. Why special care of broiler is taken?

Q15. During heavy rains in a village, the rain water carried excess of nitrogen into the river. What can be the

consequence of this process.?

Q16. Name two indigenous breeds of poultry.

Q17. Define inland fishery.

Q18. How is pisciculture different from apiculture?

Q19. Name two fresh water fishes.

Q20.What two products do we obtain from honey bees?

B. Short answer questions:

Q1. How are HYV of poultry advantageous over local breeds?

Q2. What is pasturage and how is it related to honey production?

Q3. How will you distinguish between capture fishery, inland fishery and aquaculture?

Q4. Name the Italian bee variety used for honey production and mention two reasons for why its preferred

over other varieties?

Q5. Define composite fish culture and mention its advantage.

Q6. How are broilers and layers different from each other?

Q7. Mention four main features of a good cattle shelter.

Q8. Pick the odd one out and give reason:

a) Gir ,sahiwal, red sindhi, jersey

b) Aseel, basra, chattisgarh, white leghorn.

Q9. Suppose you are in charge of a grain store. Mention two indications to find out the presence of pests in

the godown.

Q10. Give reason:

a) legumes are desirable during crop rotation

b) Excessive irrigation of crops should be avoided.

Q11. Classify the various plant nutrients according to their sources.

Q12. Crop variety improvement is a must. Justify by giving three reasons.

Q13.How is a compost different from vermicompost?

Q14. Pick the odd one out with reason:

a) mullets, pearl spots, oyster, bhetki

b) sardine, rohu, Bombay duck, tuna

Q15. Name the surface , middle zone and bottom feeders in composite fish culture.

C. Long answer questions:

Q1. Green revolution is like two faces of a coin . Explain in detail.

Q2. Write a note on prevention of animal diseases.

Q3.Mention the various preventive measures to be taken in account during grain storage.

Q4. Biological control methods should be preferred for protecting crops. Why?

Q5. Compare mixed and intercropping . also mention their advantages.

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IX Biology : Improvement in Food Resources [excel in Exam]

CBSE solved ,unsolved test papers,Notes, Assignments and Guess Papers : First Term: Improvement in Food Resources. Plant and animal breeding and selection for quality improvement and management; use of fertilizers, manures; protection from pests and diseases; organic farming.

IX- Improvement in Food Res Solved Questions IX- Imp. Food Resources:Revision assignment IX- Food Resources Solved Questions Bank Visit to Download files

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