NCERT Solutions for Class 12 Biology Chapter 9

Strategies for Enhancement in Food Production Class 12

Chapter 9 Strategies for Enhancement in Food Production Exercise Solutions

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Exercise : Solutions of Questions on Page Number : 178

Q1 :  

Explain in brief the role of animal husbandry in human welfare.


Answer :

Animal husbandry deals with the scientific management of livestock. It includes various aspects such as feeding, breeding, and control diseases to raise the population of animal livestock. Animal husbandry usually includes animals such as cattle, pig, sheep, poultry, and fish which are useful for humans in various ways. These animals are managed for the production of commercially important products such as milk, meat, wool, egg, honey, silk, etc. The increase in human population has increased the demand of these products. Hence, it is necessary to improve the management of livestock scientifically.

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Q2 :  

If your family owned a dairy farm, what measures would you undertake to improve the quality and quantity of milk production?


Answer :

Dairy farm management deals with processes which aim at improving the quality and quantity of milk production. Milk production is primarily dependent on choosing improved cattle breeds, provision of proper feed for cattle, maintaining proper shelter facilities, and regular cleaning of cattle.

Choosing improved cattle breeds is an important factor of cattle management. Hybrid cattle breeds are produced for improved productivity. Therefore, it is essential that hybrid cattle breeds should have a combination of various desirable genes such as high milk production and high resistance to diseases. Cattle should also be given healthy and nutritious food consisting of roughage, fibre concentrates, and high levels of proteins and other nutrients.

Cattle's should be housed in proper cattle-houses and should be kept in well ventilated roofs to prevent them from harsh weather conditions such as heat, cold, and rain. Regular baths and proper brushing should be ensured to control diseases. Also, time-to-time check ups by a veterinary doctor for symptoms of various diseases should be undertaken.

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Q3 :  

What is meant by the term 'breed'? What are the objectives of animal breeding?


Answer :

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Q4 :  

Name the methods employed in animal breeding. According to you which one of the methods is best? Why?


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Q5 :  

What is apiculture? How is it important in our lives?


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Q6 :  

Discuss the role of fishery in enhancement of food production.


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Q7 :  

Briefly describe various steps involved in plant breeding.


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Q8 :  

Explain what is meant by biofortification.


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Q9 :  

Which part of the plant is best suited for making virus-free plants and why?


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Q10 :  

What is the major advantage of producing plants by micropropagation?


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Q11 :  

Find out what the various components of the medium used for propagation of explants in vitro are?


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Q12 :  

Name any five hybrid varieties of crop plants which have been developed in India.


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<< Previous Chapter 8 : Human Health and Disease Next Chapter 10 : Microbes in Human Welfare >>

Biology : CBSE NCERT Exercise Solutions for Class 12th for Strategies for Enhancement in Food Production will be available online in PDF book form soon. The solutions are absolutely Free. Soon you will be able to download the solutions.

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