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Q. No.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 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 |
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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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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. |
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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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Q. No.
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