Consider the two statements:
I: | Inbreeding is an important strategy in animal breeding experiments. |
II: | It exposes recessive harmful genes that are eliminated by selection. |
1. | Both I and II are correct and II explains I. |
2. | Both I and II are correct but II does not explain I. |
3. | Only I is correct. |
4. | Both I and II are incorrect. |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
In mung bean, resistance to yellow mosaic virus and powdery mildew was introduced by:
1. | Agrobacterium mediation | 2. | Somatic hybridization |
3. | Micropropagation | 4. | Mutation breeding |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
In micro-propagation, to obtain virus free plants, the best explants can be:
1. | Embryos | 2. | Anther |
3. | Meristem | 4. | Primary permanent tissues |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The best breeding method for animals that are below average in productivity in milk production is:
1. | Inbreeding | 2. | Out-crossing |
3. | Cross-breeding | 4. | Interspecific hybridization |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Identify the row where the crop [Column I], its variety [Column II] and resistance to disease/pest [Column III] are all correctly matched:
COLUMN I |
COLUMN II |
COLUMN III |
|
1. |
Brassica |
Himgiri |
White rust |
2. |
Cowpea |
Pusa Komal |
Bacterial blight |
3. |
Flat bean |
Pusa Sem 2 |
Shoot and fruit borer |
4. |
Okra |
Pusa Gaurav |
Aphids |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The best method for producing plants free of viruses will be:
1. | Meristem culture | 2. | Embryo culture |
3. | Somatic embryogenesis | 4. | Somatic hybridization |
Conventional breeding is often constrained by the availability of a limited number of disease-resistance genes that are present and identified in various crop varieties or wild relatives. This is most commonly overcome by:
1. | Inducing mutations | 2. | Somaclonal variations |
3. | Genetic engineering | 4. | Plant introduction |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The main reason for the success of the green revolution was:
1. Improvement in the efficiency of chemical pesticides
2. Improvement in irrigation facilities
3. Equitable distribution of land among farmers
4. Development of HYV varieties
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Arrange the following steps of a plant breeding program in a correct chronological manner:
I. | Selection and testing of superior recombinants |
II. | Collection of variability |
III. | Cross hybridisation among the selected parents |
IV. | Evaluation and selection of parents |
V. | Testing, release, and commercialisation of new cultivars |
1. | II, IV, I, III, V | 2. | IV, I, II, III, V |
3. | II, IV, III, I, V | 4. | IV, III, II, I, V |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
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. |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.