Q. No.Identify the incorrectly matched row:
Crop
Variety
Resistant to
1.
Karan rai
Brassica
White rust
2.
Pusa sawani
Okra
Shoot and fruit borer
3.
Himgiri
Wheat
Leaf and stripe rust
4.
Pusa sadabahar
Cowpea
Bacterial blight
Crop
Variety
Resistant to
1.
Karan rai
Brassica
White rust
2.
Pusa sawani
Okra
Shoot and fruit borer
3.
Himgiri
Wheat
Leaf and stripe rust
4.
Pusa sadabahar
Cowpea
Bacterial blight
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How many of the given statements are correct?
| I. | Inbreeding depression can be overcome by a single cross-breed |
| II. | Out-crossing is the best method for animals that are below average in productivity in milk production |
| III. | Controlled breeding experiments are carried out using artificial insemination |
| IV. | Mule has been produced by cross-breeding between a female horse and a male donkey |
| 1. | 1 | 2. | 2 |
| 3. | 3 | 4. | 4 |
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The chances of contracting bird flu from a properly cooked (above 100°C) chicken and egg are:
| 1. | very high | 2. | high |
| 3. | moderate | 4. | negligible |
A group of animals that are related by descent and share many similarities is referred to as:
| 1. | breed | 2. | race |
| 3. | variety | 4. | species |
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Use of certain chemicals and radiation to change the base sequences of genes of crop plants is termed:
1. recombinant DNA technology
2. transgenic mechanism
3. mutation breeding
4. gene therapy.
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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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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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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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