Q. No.Consider the given two statements:
I:
Inbreeding results in more recessive traits manifesting themselves in the progeny.
II:
Recessive traits can only occur in an offspring if present in both parents' genomes.
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. I is correct and II is incorrect.
4. Both I and II are incorrect.
2. Both I and II are correct but II does not explain I.
3. I is correct and II is incorrect.
4. Both I and II are incorrect.
Suspension cultures grow much faster than callus culture provided they are:
1. fed with nutrients continuously
2. not exposed to sunlight
3. constantly agitated
4. deprived of oxygen
Consider the given two statements:
| I: | As a part of maintaining the germplasm collection, the stored seeds are grown periodically in the field to obtain fresh seeds. |
| II: | The germplasm collections are usually maintained at a low temperature in the form of seeds. |
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. I is correct and II is incorrect.
4. Both I and II are incorrect.
Most plant introductions in a country like India are:
| 1. | grown directly by the farm |
| 2. | ornamental plants introduced for their aesthetic values |
| 3. | used as parents in hybridization in breeding programs |
| 4. | invasive species that cause harm to the ecosystem |
Protoplast fusion during somatic hybridization is achieved by the use of:
1. Phenoxy acetic acid
2. Colchicine
3. Polyethylene glycol
4. 2,4 – D
The selection in cross-pollinated crops ultimately aims at:
| 1. | selecting the most desirable pureline. |
| 2. | increasing the frequency of superior genotypes without reducing heterozygosity. |
| 3. | removing all true breeding varieties from the germplasm and hybridizing only heterozygous varieties. |
| 4. | converting purelines into apomicts to prevent segregation of desired traits. |
Consider the given two statements:
| I: | Embryo culture finds useful application in some interspecific crosses. |
| II: | It includes the excision of young embryos from developing seeds and their cultivation on a nutrient medium. |
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. I is correct and II is incorrect.
4. Both I and II are incorrect.
Practically all hybrids of poultry and swine are produced by:
1. crossing inbred stocks
2. introduction of exotic breeds
3. crossing genetically similar parents
4. mutation breeding
Milk yield in cattle is primarily dependent on:
| 1. | Quality of breeds | 2. | Disease resistance |
| 3. | Good care of cattle | 4. | Hormonal treatments |
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Identify the incorrectly matched row:
|
Crop |
Variety |
Resistant to |
|
|
1. |
Cauliflower |
Pusa Snowball K1 |
Black rot and Curl blight black rot |
|
2. |
Chilli |
Pusa Sadabahar |
Mosaic virus and Leaf curl |
|
3. |
Flat bean |
Pusa Gaurav |
Jassids |
|
4. |
Okra |
Pusa sawani |
Shoot and fruit borer |
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