CBSE 12th Standard Biology Subject Strategies for Enhancement in Food Production Case Study Questions 2021
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CBSE 12th Standard Biology Subject Strategies for Enhancement in Food ProductionCase Study Questions 2021
12th Standard CBSE
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Reg.No. :
Biology
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Fisheries has an important place in Indian economy. It provides income to millions of fishermen and farmers, especially in the coastal states. In order to meet the increasing demand on fisheries, different techniques have been employed to increase production of fishes.
(a) Name two such techniques employed to increase fish production.
(b) What term is given to the movement being implemented in the same lines as Green Revolution.
(c) Name two freshwater fishes very commonly used as food.(a) -
More than 840 million people in the world do not have adequate food to meet their daily nutritional requirements. According to Global Hunger Index, 2014, about three billion people suffer from 'hidden hunger'.
(a) Apply your knowledge of plant breeding techniques to suggest a programme to improve public health.
(b) Specify four objectives of this programme.(a) -
Life style diseases are increasing alarmingly in our country. We are facing large scale malnutrition also in the population.
(a) Suggest a programme by which we can address these problems.
(b) Give any two examples to support your answer.(a) -
More than 25 per cent of human population is suffering from hunger and malnutrition. Conventional methods of agricultural production are not able to meet the demand of food at the rate which human population is increasing.
(a) Mention an alternate source of proteins for human and animal nutrition.
(b) Name any two microbes used as food supplements and explain their role.(a) -
Demand for mushroom as food has led to its culturing on a large scale. Similarly, it is perceived that microbes too would become acceptable as food.
(a) Identify a microbe which can be cultured as a food source .
(b) Mention the advantages of its culture.(a)
Case Study Questions
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CBSE 12th Standard Biology Subject Strategies for Enhancement in Food ProductionCase Study Questions 2021 Answer Keys
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(a) Aquaculture and pisciculture.
(b) Blue Revolution
(c) Catla, Rohu, Common carp. -
(a) The programme is biofortification, which refers to breeding of crops with improved nutritional quality, i.e., with higher levels of vitamins, minerals, proteins, healthier fats, etc.
(b) The objectives of biofortification are to increase/ improve.
(i) protein content and quality.
(ii) oil content and quality.
(iii) vitamin content.
(iv) micronutrient and mineral content. -
(a) Biofortification, i.e., breeding of crops with higher levels of nutrients like vitamins, minerals, proteins and healthier fats.
(b) (i) Biofortified maize variety has twice the amount of amino acids, lysine and tryptophan, compared to the normal varieties.
(ii) Biofortified rice variety contains over five times as much iron as the normal varieties.
(iii) Hybrid wheat variety with high protein content has been produced using the high protein variety, Atlas-66 as donor. -
(a) Single cell protein (SCP)
(b) (i) Spirulina is grown on a large scale on cheap and waste materials; it is rich in vitamins, minerals, fats, proteins, etc.
(ii) Methylophilus methylotrophus.
(i) 250 g of this microbe can be expected to produce 25 tonnes of proteins. -
(a) Spirulina can be cultured as a food source.
(b) Advantages
(i) It is a food rich in proteins, minerals, vitamins, carbohydrates, fats, etc.
(ii) It can be cultured in large quantities on cheap and waste materials like waste water from potato processing industries, molasses, animal manure, etc.; hence, pollution from these sources is reduced.
Case Study Questions
