Q. No.Regarding out-breeding, the number of correct statements is:
I.
Out-crossing is the practice of mating of animals within the same breed, but having no common ancestors on either side of their pedigree up to 4-6 generations.
II.
Out-crossing is the best breeding method for animals that are below average in productivity in milk production, growth rate in beef cattle, etc.
III.
A single outcross often helps to overcome inbreeding depression.
IV.
In cross-breeding superior males of one breed are mated with superior females of another breed.
V.
Cross-breeding allows the desirable qualities of two different breeds to be combined.
1.
2
2.
3
3.
4
4.
5
Amongst the following, the number of freshwater fishes are:
Catla, Rohu, Common carp, Hilsa, Sardines, Mackerel, Pomfrets.
| 1. | 2 | 2. | 3 |
| 3. | 4 | 4. | 5 |
Consider the following two statements:
| I: | An effective germplasm collection is the prerequisite of any successful plant breeding programme. |
| II: | Genetic variability is the root of any breeding programme. |
1. Both I and II are true and II explains I.
2. Both I and II are true but II does not explain I.
3. I is true but II is false.
4. I is false but II is true.
Before releasing new cultivars in plant breeding programs, their testing includes all the following except:
| 1. | growing these in the research fields and recording their performance under ideal fertiliser application, irrigation, and other crop management practices. |
| 2. | testing the materials in farmers’ fields, for one growing season at selected locations in the country |
| 3. | comparison to the best available local crop cultivar – a check or reference cultivar |
| 4. | taking care of all patent and legal issues |
Identify the option where the Crop [Column I], Variety [Column II], and Resistance to diseases [Column III] are not correctly matched:
|
CROP |
VARIETY |
RESISTANCE TO |
|
|
1. |
Wheat |
Himgiri |
Leaf and stripe rust |
|
2. |
Brassica |
Karan rai |
White rust |
|
3. |
Cowpea |
PusaShubhra |
Bacterial blight |
|
4. |
Chilli |
PusaSadabahar |
Mosaic virus |
Identify incorrectly matched pair:
|
Crop |
Variety |
|
|
1. |
Brassica |
Pusa Swarnim |
|
2. |
Okra |
Pusa Gaurav |
|
3. |
Chilli |
Pusa Sadabahar |
|
4. |
Cauliflower |
Pusa Shubhra |
The Indian Agricultural Research Institute, New Delhi, has released several vegetable crops that are rich in vitamins and minerals. Identify the incorrectly matched:
| 1. | vitamin A enriched: carrots, spinach, pumpkin; |
| 2. | vitamin C enriched: bitter gourd, bathua, mustard, tomato; |
| 3. | iron and calcium enriched: spinach and bathua; |
| 4. | Omega fatty acids enriched: beans - broad, lablab, French and garden peas. |
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 |
Consider the following statements regarding bird flu:
| I: | Viruses causing bird flu belong to Influenza virus A strain |
| II: | The most pathogenic strain of this virus causing bird flu is H1N1 |
| III: | Culling and vaccinating livestock is a short term strategy to prevent flu pandemic. |
| IV: | A human vaccine is available to control the spread of disease in human populations. |
Of the above statements, the correct are:
| 1. | I and III only | 2. | II and IV only |
| 3. | I, III and IV only | 4. | I, II, III and IV |
Hisardale is a new breed of:
| 1. | Sheep developed by crossing Bikaneri ewes and Marino rams. |
| 2. | Sheep developed by crossing Bikaneri rams and Marino ewes. |
| 3. | Goat developed by crossing Bikaneri ewes and Marino rams. |
| 4. | Goat developed by crossing Bikaneri rams and Marino ewes. |
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