Homozygous purelines in cattle can be obtained by

  • mating of related individuals of same breed

  • mating of unrelated individuals of same breed

  • mating of individuals of different breed

  • mating of individuals of different species

Interspecific hybridisation is the mating of

  • animals within same breed without having common ancestors

  • two different related species

  • superior males and females of different breeds

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

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

  • Mystus

  • Mangur

  • Mrigala

  • Mackerel

A system of rotating crops with legume or grass pasture to improve soil structure and

fertility is called

  • contour farming

  • strip farming

  • shifting agriculture

  • ley farming

Outbreeding is an important stategy of animal husbandry because it

  • help in accumulation of superior genes

  • is useful in producing purelines of animals

  • is useful in overcoming inbreeding depression 

  • exposes harmful recessive genes that are eliminated by selection

A technique of micropropagation is

  • Somatic hybridisation

  • Somatic embryogenesis

  • Protoplast fusion

  • Embryo rescue

Which of the following enhances or induces fusion of protoplasts?

  • Sodium chloride and potassium chloride

  • Polyethylene glycol and sodium nitrate

  • IAA and kinetin

  • IAA and gibberellins

In vitro clonal propogation in plants characterised by

  • PCR and RAPD

  • Northen blotting

  • Electrophoresis and HPLC

  • Microscopy

To obtain virus-free healthy plants from a diseased one by tissue culture technique, which

part/parts of the diseased plant will be taken?

  • Apical meristem only

  • Palisade parenchyma

  • Both apical and axillary meristems

  • Epidermis only

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

  • selection of superior recombinations

  • cross-hybridisation among the selected parents

  • evaluation and selection of parents

  • germplasm collection

Which part would be most suitable for raising virus-free plants for micropropagation?

  • Bark

  • Vascular tissue

  • Meristem

  • Node

'Jaya', and 'Ratna', developed for green revolution in India are the varieties of

  • rice

  • wheat 

  • bajra

  • maize

A collection of plants and seeds having diverse alleles of all the genes of a crop is called

  • germplasm

  • gene library

  • genome

  • herbarium

'Himgiri' developed by hybridisation and selection for disease resistance against rust pathogens is a variety of

  • maize

  • sugarcane

  • wheat

  • chilli

When two unrelated individuals or lines are crossed, the performance of F1 hybrid is often

superior to both its parents. This phenomenon is called

  • transformation

  • splicing

  • metamorphosis

  • heterosis

Breeding of crops with high levels of minerals, vitamins and proteins is called

  • somatic hybridisation

  • biofortification

  • biomagnification

  • micropropogation

Somaclones are obtained by

  • tissue culture

  • plant breeding

  • irradiation

  • genetic engineering

In cloning of cattle a fertilized egg is taken out of the mother's womb and:

which are implanted into the womb of other cows

development in culture media

  • the egg is divided into 4 pairs of cells which are implanted into the womb of other cows

  • in the eight cell stage, cells are separated and cultured until small embryos are formed

  • in the eight cell stage the individual cells are separated under electrical field for further

  • from this upto eight identical twins can be produced

In maize, hybrid vigour is exploited by:

  • bombarding the seeds with DNA

  • crossing of two inbred parental lines

  • harvesting seeds from the most productive plants

  • inducing mutations

Which one of the following is a viral disease of poultry ?

  • Salmonellosis

  • Coryza

  • New castle disease

  • Pasteurellosis

Triticale, the first man-made cereal crop, has been obtained by crossing wheat with: 

  • rye

  • pearl millete

  • sugarcane

  • barley

In order to obtain virus-free plants through tissue culture the best method is:

  • protoplast culture

  • embryo culture

  • anther culture

  • meristem culture

The name of the Indian scientist associated with Green Revolution in India is

  • H.G. Khorana

  • M.S.Swaminathan

  • Homi Bhaba

  • C.N.R. Rao.

People recovering from long illness are often advised to include the alga Spirulina in their

diet because it

  • makes the food easy to digest

  • is rich in proteins

  • has antibiotic properties

  • restores the intestinal microflora.

Cattle fed with spoilt hay of sweet clover which contains dicumarol

  • are healthier due to a good diet

  • catch infections easily

  • may suffer vitamin K deficiency and prolonged bleeding

  • may suffer from beri beri due to deficiency of B vitamins

Somaclonal variation can be obtained by

  • application of colchicine

  • irradiation with gamma rays

  • tissue culture

  • hybridisation.

Somaclonal variation appears in

  • organisms produced through somatic hybridization

  • plants growing in highly polluted conditions

  • apomictic plants

  • tissue culture raised plants.

In the following table identify the correct matching of the crop, its disease and the corresponding pathogen.
  • 1
  • 2
  • 3
  • 4

Somaclonal variation is seen in 

  • tissue culture grown plants

  • apomicts

  • polyploids

  • vegetatively propagated plants

Which of the following is a correct match between crop, variety and resistance to diseases ?
  • 1
  • 2
  • 3
  • 4
0:0:1


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