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Q. No.The main reason for the success of the green revolution was:
1. Improvement in the efficiency of chemical pesticides
2. Improvement in irrigation facilities
3. Equitable distribution of land among farmers
4. Development of HYV varieties
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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
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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 |
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In micro-propagation, to obtain virus free plants, the best explants can be:
| 1. | Embryos | 2. | Anther |
| 3. | Meristem | 4. | Primary permanent tissues |
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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 |
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Suspension cultures grow much faster than callus culture provided they are:
1. fed with nutrients continuously
2. not exposed to sunlight
3. constantly agitated
4. deprived of oxygen
The original idea of total potentiality in plants was pioneered by:
| 1. | Gottlieb Haberblandt | 2. | Skoog and Miller |
| 3. | Panchanan Maheshwari | 4. | Gurdev Singh |
Plantlets regenerated during micropropagation are subjected to hardening where they are grown in the conditions of:
1. sufficient light and high humidity
2. sufficient light and low humidity
3. decreased light and high humidity
4. decreased light and low humidity
The best method for producing plants free of viruses will be:
| 1. | Meristem culture | 2. | Embryo culture |
| 3. | Somatic embryogenesis | 4. | Somatic hybridization |
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Q. No.
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