Q. No.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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Which one of the following products of apiculture is used in cosmetics and polishes?
| 1. | honey | 2. | propolis |
| 3. | wax | 4. | Royal jelly |
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More than 70 per cent of livestock population is found in:
| 1. | Denmark | 2. | India |
| 3. | China | 4. | India and China |
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