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Q. No.The critical research areas of biotechnology include all the following except:
| 1. | Providing the best catalyst in the form of improved organism usually a microbe or pure enzyme. |
| 2. | Creating optimal conditions through engineering for a catalyst to act. |
| 3. | Downstream processing technologies to purify the protein/organic compound. |
| 4. | Development of new genetically modified microbes that can be used as bio-weapons. |
Subtopic: Intro to Agri Applications | Transgenic Microbes & Animals | Ethical Issues |
81%
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Increased yield of crop during the green revolution was due to:
| I. | Use of improved crop varieties |
| II. | Use of better management practices |
| III. | Use of agrochemicals [fertilisers and pesticides] |
| 1. | Only I | 2. | Only I and III |
| 3. | Only I and II | 4. | I, II and III |
Subtopic: Intro to Agri Applications |
82%
From NCERT
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The term ‘totipotency’ refers to the capacity of a:
1. cell to generate the whole plant
2. bud to generate the whole plant
3. seed to germinate
4. cell to enlarge in size
Subtopic: Plant Tissue Culture |
93%
From NCERT
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The most important advantage of micropropagation is:
| 1. | production of virus free plants |
| 2. | rapid production of a large number of genetically identical superior plants |
| 3. | creation of somaclonal variations for effective germplasm collection |
| 4. | production of transgenic plants |
Subtopic: Plant Tissue Culture |
63%
From NCERT
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The plantlets produced during plant tissue culture are called somaclones because:
| 1. | They can be produced in a very short span of time |
| 2. | They are the result of the somatic hybridization of two cells |
| 3. | The gametes develop parthenogenetically to produce genetically identical plantlets |
| 4. | They are genetically identical to the original plant from which they were grown |
Subtopic: Plant Tissue Culture |
73%
From NCERT
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Somaclonal variations are:
| 1. | seen in plants that have been produced by plant tissue culture. |
| 2. | due to environmental factors and have no evolutionary advantage. |
| 3. | induced by mutations and are inherited. |
| 4. | not useful in plant breeding programs. |
Subtopic: Plant Tissue Culture |
82%
From NCERT
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A crop gets infected with a certain virus and the farmers of the area suffer immense financial loss. You have been asked to help the farmers and you decide to improve the crop by raising virus-free plants through plant tissue culture. The explant you will choose must be:
| 1. | Meristem | 2. | Anther |
| 3. | Embryo | 4. | Internode |
Subtopic: Plant Tissue Culture |
90%
From NCERT
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The first step to achieve somatic hybridization in plants will be:
| 1. | growing individual cells into callus |
| 2. | fusion of two cells in the presence of polyethylene glycol |
| 3. | converting plant cells into protoplast by cellulase |
| 4. | growing plant cells in cytokinin |
Subtopic: Plant Tissue Culture |
59%
From NCERT
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All the following are possible today with the use of GM crops except:
| 1. | More tolerance to abiotic stresses |
| 2. | Alternative resources to industries |
| 3. | Increased efficiency of mineral usage by plants |
| 4. | Fixation of atmospheric nitrogen |
Subtopic: Intro to Agri Applications |
76%
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GM crops have been modified with various traits. Golden rice has been developed by the International Rice Research Institute for:
| 1. | Improved shelf life | 2. | Disease resistance |
| 3. | Herbicide resistance | 4. | Improved nutritional value |
Subtopic: Other GM Crops |
92%
From NCERT
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