Q. No.The agricultural practice of breeding and raising livestock is called:
1.
Domestication
2.
Breeding
3.
Animal husbandry
4.
Bio-fortification
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A pure line plant:
| 1. | is defined as having only recessive alleles for the traits at all loci |
| 2. | breeds true and preserves the trait for many generations |
| 3. | is not susceptible to any diseases and is used as a parent in plant breeding experiments |
| 4. | can be produced by inbreeding amongst the endemic varieties only |
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Consider the following two statements:
| I: | In spite of having more than 70 percent of the world's livestock population, the contribution of India and China to the world's farm produce is only 25 percent. |
| II: | The productivity per unit of cattle in these countries is very low. |
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. Both statements are not true
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Identify the incorrect statement regarding Multiple Ovulation Embryo Transfer Technology (MOET):
| 1. | FSH like hormones or PMSG [pregnant mare serum gonadotropin] are used to induce super-ovulation [6 – 8 eggs rather than one per cycle] and Prostaglandins are used to regulate the duration of cycle. |
| 2. | Fresh embryos can be stored at 37ºC for 6 - 8 hours without much harm but it is recommended that the embryos are inserted into the recipient cow or frozen as soon as possible. The embryos can be stored forever in liquid nitrogen. |
| 3. | The animal is either mated with an elite bull or artificially inseminated and the fertilised eggs at 8–32 cell stages are recovered non-surgically and transferred to genetic mothers. |
| 4. | The embryos are transferred to a recipient cow whose oestrous cycle is at the correct receptive stage. |
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Today, all our major food crops are derived from:
1. Wild varieties
2. Domesticated varieties
3. Genetically modified varieties
4. Plant tissue culture
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Resistance to the yellow mosaic virus in bhindi (Abelmoschus Esculentus) was possible by:
| 1. | Conventional hybridization | 2. | Mutations |
| 3. | Genetic engineering | 4. | Tissue culture |
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Breeding crops with higher levels of vitamins and minerals, or higher protein and healthier fats is called:
| 1. | Bioremediation | 2. | Biofortification |
| 3. | Food adulteration | 4. | Biomagnification |
Any part of a plant taken out and grown in a test tube under sterile conditions in special nutrient media for generating new plants is called:
| 1. | Implant | 2. | Explant |
| 3. | Supplant | 4. | Plantlet |
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The management of animals for milk and its products for human consumption is called:
| 1. | Animal breeding | 2. | Dairying |
| 3. | Domestication | 4. | Animal husbandry |
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Insect resistance in host crop plants may be due to morphological, biochemical, or physiological characteristics. Identify the correct statements:
| I: | Hairy leaves in several plants are associated with resistance to jassids in cotton and cereal leaf beetle in wheat. |
| II: | In wheat, solid stems lead to non-preference by the stem sawfly and smooth-leaved and nectar-less cotton varieties do not attract bollworms. |
| III. | High aspartic acid, low nitrogen and sugar content in maize lead to resistance to maize stem borers. |
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
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