Free Ncert Solutions for 9th Class Science Improvement in food resources - Studyadda.com

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9th Science Improvement in food resources

1)

Explain any one method of crop production which ensures high yield.
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2)

Why are manure and fertilizers used in fields ?
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3)

What are the advantages of intercropping and crop rotation ?
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4)

What is genetic manipulation ? How is it useful in agricultural practices ?
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5)

How do storage grain losses occur ?
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6)

How do animal husbandry practices benefit farmers ?
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7)

What are the benefits of cattle farming ?
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8)

For increasing production, what is common in poultry, fisheries and bee-keeping ?
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9)

How do you differentiate between capture fishing, mariculture, and aquaculture ?
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10)

What do we get from cereals, pulses, fruits and vegetables?
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11)

How do biotic and abiotic factors affect crop production?
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12)

What are the desirable agronomic characteristics for crop improvement?
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13)

What are the macronutrients and why are they called macronutrients?
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14)

How do plants get nutrients?
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15)

Compare the use of manure and fertilisers in maintaining soil fertility.
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16)

Which of the following conditions will give the most benefits? Why? (i) Farmers use high-quality seeds, do not adopt irrigation or use fertilizers. (ii) Farmers use ordinary seeds, adopt irrigation, use fertilizers and use crop protection measures. (iii) Farmers use quality seeds, adopt irrigation use fertilizer and use crop protection measures.
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17)

Why should preventing measures and biological control methods be preferred for protecting crops?
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18)

What factors may be responsible for the losses of grains during storage?
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19)

Which method is commonly used for improving cattle breeds and why? How is cross breeding useful in animals?
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20)

What management practices are common in dairy and poultry farming?
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21)

What are the differences between broilers and layers and in their management?
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22)

How are fish obtained?
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23)

What are the advantage of composite fish culture?
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24)

What are the desirable characters of the varieties suitable for honey production?
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25)

What is pasturage and how is it related to honey production?
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26) Which one is an oil yielding plant among the following? (a) Lentil (b) Sunflower (c) Cauliflower (d) Hibiscus
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27) Which one is not a source of carbohydrate? (a) Rice (b) Millets (c) Sorghum (d) Gram
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28) Find out the wrong statement from the following. (a) White revolution is meant for increase in milk production. (b) Blue revolution is meant for increase in fish production. (c) Increasing food production without compromising with environmental quality is called as sustainable agriculture. (d) None of the above
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29) To solve the food problem of the country, which among the following is necessary? (a) Increased production and storage of food grains (b) Easy access of people to the food grain (c) People should have money to purchase the grains (d) All of the above
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30) Find out the correct sentence. (i) Hybridization means crossing between genetically dissimilar plants (ii) Cross between two varieties is called as inter specific hybridization (iii) Introducing genes of desired character into a plant gives genetically modified crop (iv) Cross between plants of two species is called as inter varietal hybridization (a) (i) and (iii) (b) (ii) and (iv) (c) (ii) and (iii) (d) (iii) and (iv)
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31) Weeds affect the crop plants by (a) killing of plants in field before they grow (b) dominating the plants to grow (c) competing for various resources of crops (plants) causing low availability or nutrients (d) AII of the above
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32) Which one of the following species of honey bee is an Italian species? (a) Apis dorsata (b) Apis rlorae (c) Apis cerana indica (d) Apis mellifera
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33) Find out the correct sentence about manure (i) Manure contains large quantities of organic matter and small quantities of nutrients. (ii) It increases the water holding capacity of sandy soil. (iii) It helps in draining out of excess of water from clayey soil. (iv) Its excessive use pollutes environment because it is made of animal excretory waste. (a) (i) and (iii) (b) (i) and (ii) (c) (ii) and (iii) (d) (iii) and (iv)
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34) Cattle husbandry is done for the following purposes (i) Milk production (ii) Agricultural work (iii) Meat production (iv) Egg production (a) (i), (ii) and (iii) (b) (ii), (iii) and (iv) (c) (iii) and (iv) (d) (i) and (iv)
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35) Which of the following are Indian cattle? (i) Bos indicus (ii) Bos domestica (iii) Bos bubal-is (iv) Bos vulgaris (a) (i) and (iii) (b) (i) and (ii) (c) (ii) and (iii) (d) (iii) and (iv)
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36) Which of the following are exotic breeds? (i) Brawn (ii) Jersey (iii) Brown Swiss (iv) Jersey Swiss (a) (i) and (iii) (b) (ii) and (iii) (c) (i) and (iv) (d) (ii) and (iv)
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37) Poultry farming is undertaken to raise following (i) Egg production (ii) Feather production (iii) Chicken meat (iv) Milk production (a) (i) and (iii) (b) (i) and (ii) (c) (ii) and (iii) (d) (iii) and (iv)
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38) Poultry fowl are susceptible to the following pathogens (a) viruses (b) bacteria (c) fungi (d) All of these
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39) Which one of the following fishes is a surface feeder? (a) Rohus (b) Mrigals (c) Common carps (d) Catlas
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40) Animal husbandry is the scientific management of (i) animal breeding (ii) culture of animals (iii) animal livestock (iv) rearing of animals (i), (ii) and (iii) (b) (ii). (iii) and (iv) (c) (i), (ii) and (iv) (d) (i), (iii) and (iv)
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41) Which one of the following nutrients is not available in fertilizers? (a) Nitrogen (b) Phosphorus (c) Iron (d) Potassium
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42) Preventive and control measures adopted for the storage of grains include (a) strict cleaning (b) proper disjoining (c) fumigation (d) All of these
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43) Match the column I with the column II. Column I Column II. A. Catla 1. Bonorn feeders B. Rohu 2. Surface feeders C. Mnqal 3. Middle-zone feeders D. Fish forming 4. Culture fishery
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44) Fill in the blanks (a) Pigeon pea is a good source of............. . (b) Berseem is an important............ crop. (c) The crops which are grown in rainy season are called ......... crops. (d) ............ are rich in vitamins. (e) ............ crop grows in winter season.
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45) What is a GM crop? Name any one such crop which is grown in India.
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46) List out some useful traits in improved crop.
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47) Why is organic matter important for crop production?
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48) Why is excess use of fertilisers detrimental for environment?
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49) Give one word for the following. (a) Farming without the use of chemicals as fertilisers, herbicides and pesticides is known as ......... . (b) Growing of wheat and groundnut on the same field is called as ........ . (c) Planting soyabean and maize in alternate rows in the same field is called as ......... . (d) Growing different crops on a piece of land in pre-planned succession is known as ........ . (e) Xanthium and Parthenium are commonly known as ........ . (f) Causal organism of any disease is called as ............. .
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50) Match the following column I and II

Column I Column II

A. Cattle used for tlling and carting 1. Milk producing female

B. Indian breed of chicken 2. Broiler

C. Sahiwal, red sindhi 3. Drought animals

D. Milch 4. Local breed of cattle

E. Chicken better fed for obtaining meat 5. Aseel

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74) Complete the crossword puzzle figure.

10

1 2 6

8 7

3 4

9

5

Across 1. Oil yielding plant (9) 3. Crop grown in winter season (4) 5. Fixed by Rhizobium (8) 9. Common honey bee (4) Downward 2. Animal feed (6) 4. A micronutrient (5) 6. Unwanted plant in crop fields (4) 7. An exotic breed of chicken (7) 8. Bottom feeders in fish pond (7) 10. A marine fish (4)

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