Interspecific hybridisation is the mating of

(a) animals within same breed without having common ancestors

(b) two different related species

(c) superior males and females of different breeds

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

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

(a) Mystus

(b) Mangur

(c) Mrigala

(d) Mackerel

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A system of rotating crops with legume or grass pasture to improve soil structure and fertility is called
(a) contour farming
(b) strip farming
(c) shifting agriculture
(d) ley farming

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Outbreeding is an important stategy of animal husbandry because it
(a) help in accumulation of superior genes
(b) is useful in producing purelines of animals
(c) is useful in overcoming inbreeding depression 
(d) exposes harmful recessive genes that are eliminated by selection

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A technique of micropropagation is

(a) Somatic hybridisation

(b) Somatic embryogenesis

(c) Protoplast fusion

(d) Embryo rescue

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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

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In vitro clonal propogation in plants characterised by

(a) PCR and RAPD

(b) Northen blotting

(c) Electrophoresis and HPLC

(d) Microscopy

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An alga which can be employed as food for human being is

(a) Ulothrix

(b) Chlorella

(c) Spirogyra

(d) Polysiphonia

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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?

(a) Apical meristem only

(b) Palisade parenchyma

(c) Both apical and axillary meristems

(d) Epidermis only

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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

(a) selection of superion recombinations

(b) cross-hybridisation among the selected parents

(c) evaluation and selection of parents

(d) germplasm collection

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