Q. No.The most important species of honeybee reared in India is:
1.
Apis indica
2.
Apis mellifera
3.
Apis dorsata
4.
Apis florea
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Identify the incorrectly matched pair:
| Column I | Column II | |
| 1. | Sonalika and Kalyan Sona | Improved varieties of wheat |
| 2. | Jaya and Ratna | Improved varieties of maize |
| 3 | Saccharum Barberi | Poor sugar content and yield |
| 4. | Saccharum officinarum | High sugar content and thick stems |
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Methylophilus methylotrophus is a source of:
| 1. | Bioinsecticide | 2. | Single cell protein |
| 3. | Thrombolytic | 4. | Clotting factors |
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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
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 following statements:
| I: | Self-pollination or selfing is the extreme form of inbreeding. |
| II: | Loss of vigor associated with inbreeding is inbreeding depression. |
| III: | Self-pollinated crops do not usually show the ill effects of inbreeding. |
The correct statements are:
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
The original idea of total potentiality in plants was pioneered by:
| 1. | Gottlieb Haberblandt | 2. | Skoog and Miller |
| 3. | Panchanan Maheshwari | 4. | Gurdev Singh |
Plantlets regenerated during micropropagation are subjected to hardening where they are grown in the conditions of:
1. sufficient light and high humidity
2. sufficient light and low humidity
3. decreased light and high humidity
4. decreased light and low humidity
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 |
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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. |
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