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Q. No.Somatic embryo regeneration in micropropagation is induced by high concentrations of:
| 1. | Cytokinins | 2. | Gibberellins |
| 3. | Auxins | 4. | Zinc |
Subtopic: Â Plant Tissue Culture |
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Somaclonal variation is the variation seen in plants that have been produced by:
| 1. | Classical hybridization | 2. | Mutation breeding |
| 3. | Plant tissue culture | 4. | Genetic engineering |
Subtopic: Â Plant Tissue Culture |
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Protoplast fusion can be achieved with the use of:
| 1. | Colchicine | 2. | Polyethylene Glycol |
| 3. | Polyacryl amide | 4. | Ethidium bromide |
Subtopic: Â Plant Tissue Culture |
 81%
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During organogenesis in plant tissue culture:
1. an excess of auxin will often result in a proliferation of roots, while an excess of cytokinin yield shoots
2. an excess of auxin will often result in a proliferation of roots, while an excess of gibberellins yield shoots
3. an excess of cytokinin will often result in a proliferation of roots, while an excess of gibberellins yield shoots
4. an excess of gibberellins will often result in a proliferation of roots, while an excess of ethylene yield shoots
1. an excess of auxin will often result in a proliferation of roots, while an excess of cytokinin yield shoots
2. an excess of auxin will often result in a proliferation of roots, while an excess of gibberellins yield shoots
3. an excess of cytokinin will often result in a proliferation of roots, while an excess of gibberellins yield shoots
4. an excess of gibberellins will often result in a proliferation of roots, while an excess of ethylene yield shoots
Subtopic: Â Plant Tissue Culture |
 70%
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| Assertion (A): | Whole plants can be regenerated from any part of a plant taken out and grown in a test tube, under sterile conditions in special nutrient media |
| Reason (R): | Every living plant cell is totipotent |
| 1. | Both (A) and (R) are True and the (R) is the correct explanation of the (A) |
| 2. | Both (A) and (R) are True but the (R) is not the correct explanation of the (A) |
| 3. | (A) is True but (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Â Plant Tissue Culture |
 67%
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Plant tissue culture may offer certain advantages over traditional methods of propagation, including all the following except:
| 1. | The production of plants that exhibit large variations from the parent plants. |
| 2. | Quickly production of mature plants. |
| 3. | The regeneration of whole plants from plant cells that have been genetically modified. |
| 4. | Storage of genetic plant material to safeguard native plant species. |
Subtopic: Â Plant Tissue Culture |
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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: Â Plant Tissue Culture |
 90%
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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
Subtopic: Â Plant Tissue Culture |
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