Multiple Choice Questions

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

  • somatic hybridization

  • biofortification

  • biomagnification

  • biomagnification


B.

biofortification

C.

biomagnification

Biofortification is a method of breeding crops to increase their nutritional value. This can be done either through conventional selective breeding or genetic engineering. Biofortification differs from ordinary fortification because it focuses on making plant foods more nutritious add the plants are growing rather than nutrients added to the food when they are being processed. This is an improvement on ordinary fortification when it comes to providing nutrients for the rural poor, who rarely have access to commercially fortified foods.

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A common biocontrol agent for the control of plant diseases is

  • Baculovirus

  • Bacillius thuringiensis

  • Glomus

  • Glomus

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Which one of the following statements is correct with respect to AIDS?

  • The HIV can be transmitted through eating food together with an infected person

  • Durg addicts are least susceptible to HIV infection

  • AIDS patients are being fully cured cent percent with proper care and nutrition

  • AIDS patients are being fully cured cent percent with proper care and nutrition

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Select the correct statement from the ones given below with respect to dihybrid cross. 

  • Tightly linked genes on the same chromosome show higher recombinations

  • Genes far apart on the same chromosome show very few recombinations

  • Genes loosely linked on the same chromosome show similar recombinations as the tightly linked ones.

  • Genes loosely linked on the same chromosome show similar recombinations as the tightly linked ones.

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Widal test is used for the diagnosis of 

  • Malaria 

  • pneumonia

  • tuberculosis

  • tuberculosis

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Which one of the following palindromic base sequences in DNA can be easily cut at about the middle be some particular restriction enzyme?

  • 5'-CGTTCG -3'
    3'-ATCCTA-5'

  • 5'-GATATG-3'
    3'-CTACTA-5'

  • 5'-GAATTC-3'
    3'CTTAAG-5'

  • 5'-GAATTC-3'
    3'CTTAAG-5'

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Which one of the following is used as a vector for cloning the gene into higher organisms?

  • Baculovirus

  • Salmonella typhimurium

  • Rhizopus nigricans

  • Rhizopus nigricans

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The biomass available for consumption by the herbivores the decomposers is called

  • net primary productivity

  • secondary productivity

  • standing crop

  • standing crop

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Which one of the following is an example of ex- situ conservation?

  • Wildlife sanctuary

  • Seed bank

  • Sacred groves

  • Sacred groves

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The one aspect which is not a salient feature of genetic code is its being

  • degenerate

  • ambiguous

  • universal

  • universal

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