Mutation breeding in crops is based on:
1. | Spontaneous mutations | 2. | Induced mutations |
3. | Chromosomal aberrations | 4. | Aneuploidy |
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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Which of the following is not an edible marine fish?
1. | Mackerel | 2. | Catla |
3. | Hilsa | 4. | Sardines |
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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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Which of the following is not an example of biofortification?
1. Iodized salt
2. Atlas 66
3. Golden rice
4. Maize hybrids with increased lysine and tryptophan
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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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Artificial insemination in cattle breeding can be advantageous as it:
I. | leads to increased efficiency of bull usage. |
II. | leads to an increased potential for genetic selection |
III. | reduces disease transmission even if the semen is not checked |
1. | Only I | 2. | Only I and II |
3. | Only II | 4. | I, II and III |
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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‘Atlas 66’ is an improved variety of:
1. rice rich in beta carotene
2. maize with increased tryptophan content
3. wheat having a high protein content
4. vitamin C enriched bitter gourd
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