Important Questions for Improvement in food Resources

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BIOLOGY 

(Improvement in food Resources)

1. Which macronutrient is required in largest quantity by plant?

(a) Nitrogen (b) Molybdenum  (c) Potassium (d) Copper.[1]

2. ‘Blue Revolution’ refers to increase in –

(a) Milk Production (b) Egg Production

(c) Grain Production (d) Fish production.[1]

3. Which one of the following includes only Micronutrients –

(a) Iron, Copper, manganese. (b) Iron, Zinc, calcium.

(c) Boron, copper and potassium. (d) Molybdenum, Copper, Sulphur.[1]

4. The enrichment of water bodies with nutrients leading to excessive growth of

phytoplankton is known as –

(a) Nitrification (b) Ammonification

(c) Eutrophication (d) Phyto – enrichment.[1]

5. What are weeds? Give two examples. [2]

6. What is crop rotation? [2]

7. What are drones? [2]

8. What is pasturage and how is it important? [2]

9. Define (a) Pisciculture (b) hatcheries (c) swarming [3]

10. What is green manuring? Give examples of green manures. [3]

11. Discuss the preventive measures for the storage of grains. [3]

12. Name three basic scientific approaches for increasing yield of a crop. [3]

                                                               Part 2

1. 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)

(d) All the above.[1]

2. ‘Operation Flood’ in India refers to –

(a) Controlling floods during rainy season.

(b) Increase in milk production by development of co-operative dairy on a large scale.

(c)Increase in fish production during floods.

(d) Large increase in egg production.

3. Find out the correct sentences.

(i) Hybridisation 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)[1]

4. Which one of the following fishes is a surface feeder?

(a) Rohu (b) Mrigal (c) Common carp (d) catla  [1]

5. What is an layer and a broiler? What are the differences between the two? [2]

6. Arrange the following statements in correct sequence of preparation of green manure

(a) Green plants are decomposed in soil

(b) Green plants are cultivated for preparing manure or crop plant parts are used

(c) Plants are ploughed and mixed into soil

(d) After decomposition it becomes green manure.[2]

7. What are the benefits of poultry farming over cattle farming? [2]

8. Define niter – cropping Mention its advantages. [2]

9. What are the advantages of bee-keeping? [3]

10. Differentiate between capture fishing, aquaculture and mariculture. [3]

11. List the steps to be taken to prevent and control diseases in animals. [3]

12. Give difference between manures and fertilizers. [3]

13. What is genetic manipulation? How is it useful in agricultural practices? [5] 

                                                             Part 3

1. Which of one of the following nutrients is not available in fertilizers.

(a) Nitrogen (b) Phosphorous (c) Iron (d) Potassium.[1]

2. The science of growing vegetables, fruits & ornamental plants is called –

(a) Floriculture (b) Horticulture(c) Agriculture (d) Animal Husbandry.[1]

3. Who is known as ‘Father of white revolution’ in India?

(a) Prof M.S. swaminathan (b) Dr.V. Kurien

(c) Mrs. Indira Gandhi (d) Shri Jai Prakash Narain.[1]

4. Poultry fowl are susceptible to the following pathogens –

(a) Viruses (b) Bactria(c) None (d) all of the above.[1]

5. What are the advantages of organic farming? [2]

6. Differentiate between mixed cropping and Inter-cropping. [2]

7. Give difference between Rabi and kharif crop? [2]

8. What is hybridization? [2]

9. What are the components of cattle feed? [3]

10. Define the following (i) White revolution (ii) silver revolution (iii) blue

revolution.[3]

11. What is green manuring? Give example of green manures? [3]

12. What are the main practices involved in keeping of animals or animal

husbandry?

                                          Part 4

1. Identify the macronutrient

(a) copper (b) zinc (c) sulphur (d) Boron [1]

2. Pulse crops are rich in

(a) Proteins (b) fats (c) Vitamins (d) carbohydrates[1]

3. Preventive and control measures adopted for the storage of grains include –

(a) Strict cleaning (b) proper disjoining (c) fumigation (d) all the above.[1]

4. 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 grains.

(c) People should have money to purchase the grains

(d) All the above.[1]

5. List the various methods of weed control. [2]

6. What are the characteristics features of ideal shelters for cattle? [2]

7. What are the hazards of using fertilizers? [2]

8. How do insects pest damage crop plants? [2]

9. Name the abiotic and biotic factors which affects stored grains and how? [3]

10. What is the need of crop improvement? what are the desirable agronomic characteristics for crop improvement [3]

11. Define (i) Draught breeds

(ii) Dual purpose breeds

(iii) Dairy breeds[3]

12. What are the symptoms of diseased anima

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