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प्रश्न
What is ‘biofortification’?
Explain what is meant by biofortification.
उत्तर १
Biofortification is the method of breeding of crops to produce varieties which have increased nutritional value.
उत्तर २
Biofortification is a process of breeding crops with higher levels of vitamins, minerals, proteins, and fat content. This method is employed to improve public health. Breeding of crops with improved nutritional quality is undertaken to improve the content of proteins, oil, vitamins, minerals, and micro-nutrients in crops. It is also undertaken to upgrade the quality of oil and proteins. An example of this is a wheat variety known as Atlas 66, which has high protein content in comparison to the existing wheat. In addition, there are several other improved varieties of crop plants such as rice, carrots, spinach etc. which have more nutritious value and more nutrients than the existing varieties.
Notes
Students can refer to the provided solutions based on their preferred marks.
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संबंधित प्रश्न
Give reason :
Emasculation is done in a flower which is selected as female parent.
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How has the breeding programme helped in improving the public nutritional health? State two examples in support of your answer.
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Explain selective breeding. Give any 'two' examples and their nutrients obtained by selective breeding.
Answer the following question:
Give the scientific term used for the preservation of germplasm at a very low temperature.
Plants having similar genotypes produced by plant breeding are called
Importing better varieties and plants from outside and acclimatizing them to the local environment is called
Column - I contains names of host plant while Column - II contains names of viral dieases. Find the correct option.
| Column-I | Column-II | ||
| (I) | Banana | (p) | little leaf |
| (II) | Sugarcane | (q) | bunchy top |
| (III) | Papaya | (r) | leaf roll |
| (IV) | Brinjal | (s) | grassy shoot |
| (t) | leaf curl |
Which method of plant breeding has been used to develop a powdery mildew-resistant variety of moong beans?
Sonora – 64 is a variety of ______.
Which one of the following pathogens causes cancer disease?
Mutations in plant cells can be induced by ______
Which of the following is not an objective of Biofortification in crops?
Use of certain chemicals and radiation to change the base sequences of genes of crop plants is termed ______.
The agriculture sector of India employs about ______.
A collection of all the alleles of all the genes of a crop plant is called ______.
Discuss the two main limitations of plant hybridization programme.
Name the improved characteristics of wheat that helped India to achieve green revolution.
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Define the term ‘stress’ for plants. Discuss briefly the two types of stress encountered by plants.
Discuss natural selection and artificial selection. What are the implications of the latter on the process of evolution?
Give few examples of biofortified crops. What benefits do they offer to the society?
What are A, B in the following table:
| Transgenic Crop | Substance | Transgene | |
| (i) | A | Flavonoids | Chalone isomerase |
| (ii) | Rice | B | Ferritin |
Match the following:
| Sr. No. | Column I | Column II | |
| (i) | Eutrophication | (a) | A soil erosion |
| (ii) | Biomagnification | (b) | carbon monoxide, methane |
| (iii) | Particulate pollutant | (c) | Prevention of extinction |
| (iv) | Conservation | (d) | Dust, smog |
| (v) | Gaseous pollutants | (e) | Accumulation of nonbiodegradable substances |
| (vi) | Deforestation | (f) | Death of aquatic ecosystem |
Give a reason for the following:
The continuous inbreeding of crops may lead to reduced fertility and productivity. However, the self-pollinated crops do not show the ill-effects of inbreeding.
