Homozygous purelines in cattle can be obtained by

(1) mating of related individuals of same breed

(2) mating of unrelated individuals of same breed

(3) mating of individuals of different breed

(4) mating of individuals of different species

Subtopic:  Animal Husbandry |
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Interspecific hybridisation is the mating of

(1) animals within same breed without having common ancestors

(2) two different related species

(3) superior males and females of different breeds

(4) more closely related individuals within same breed for 4-6 generations

Subtopic:  Animal Husbandry |
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Among the following edible fishes, which one is a marine fish having rich source of omega-3 fatty acids?

(1) Mystus

(2) Mangur

(3) Mrigala

(4) Mackerel

Subtopic:  Animal Husbandry |
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A system of rotating crops with legume or grass pasture to improve soil structure and

fertility is called

1. contour farming

2. strip farming

3. shifting agriculture

4. ley farming

Subtopic:  Plant Breeding for Quality |
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Outbreeding is an important stategy of animal husbandry because it

1. help in accumulation of superior genes

2. is useful in producing purelines of animals

3. is useful in overcoming inbreeding depression 

4. exposes harmful recessive genes that are eliminated by selection

Subtopic:  Animal Husbandry |
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A technique of micropropagation is

1. Somatic hybridisation

2. Somatic embryogenesis

3. Protoplast fusion

4. Embryo rescue

Subtopic:  Plant Tissue Culture |
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Which of the following enhances or induces fusion of protoplasts?

(1) Sodium chloride and potassium chloride

(2) Polyethylene glycol and sodium nitrate

(3) IAA and kinetin

(4) IAA and gibberellins

Subtopic:  Plant Tissue Culture |
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In vitro clonal propogation in plants characterised by

1. PCR and RAPD

2. Northen blotting

3. Electrophoresis and HPLC

4. Microscopy

Subtopic:  Plant Tissue Culture |
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To obtain virus-free healthy plants from a diseased one by tissue culture technique, which

part/parts of the diseased plant will be taken?

1. Apical meristem only

2. Palisade parenchyma

3. Both apical and axillary meristems

4. Epidermis only

Subtopic:  Plant Tissue Culture |
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In plant breeding programmes, the entire collection (of plants/seeds) having all the diverse alleles for all genes in a given crop is called

1. selection of superior recombinations

2. cross-hybridisation among the selected parents

3. evaluation and selection of parents

4. germplasm collection

Subtopic:  Plant Breeding & Its Steps |
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