Q. No.The scientific process by which crop plants are enriched with certain desirable nutrients is called:
1. crop protection
2. breeding
3. bio-fortification
4. bio-remediation.
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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Given below are a few statements regarding somatic hybridization. Choose the correct statements:
| (i) | protoplasts of different cells of the same plant are fused. |
| (ii) | protoplasts from cells of different species can be fused. |
| (iii) | treatment of cells with cellulase and pectinase is mandatory. |
| (iv) | the hybrid protoplast contains characters of only one parental protoplast. |
| 1. | (i) and (iii) | 2. | (i) and (ii) |
| 3. | (i) and (iv) | 4. | (ii) and (iii) |
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An explant is a :
1. dead plant
2. part of the plant
3. part of the plant used in tissue culture
4. part of the plant that expresses a specific gene.
The biggest constraint of plant breeding is:
1. availability of desirable gene in the crop and its wild relatives
2. infrastructure
3. trained manpower
4. transfer of genes from unrelated sources.
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Lysine and tryptophan are:
1. proteins
2. non-essential amino acids
3. essential amino acids
4. aromatic amino acids.
Micro-propagation is:
1. propagation of microbes in vitro
2. propagation of plants in vitro
3. propagation of cells in vitro
4. growing plants on a smaller scale
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Protoplast is:
| 1. | another name for protoplasm | 2. | an animal cell |
| 3. | a plant cell without a cell wall | 4. | a plant cell |
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To isolate protoplast, one needs:
1. pectinase
2. cellulase
3. both pectinase and cellulase
4. chitinase.
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