Multiple Choice Questions

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The ultimate source of energy for a living being is

  • Sunlight

  • ATP

  • Fats

  •  Carbohydrates


A.

Sunlight

Sunlight is the ultimate source of energy as it is the only inexhaustible resource, which is utilised by green plants and is passed on to higher trophic level through a food chain.


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Skin colour is controlled b

  • Single gene

  • 3 pairs of genes

  • 2 pairs of genes

  • 2 pairs of genes with an intragene


The thermostable enzymes, Taq and Pfu, isolated from thermophilic bacteria are

  • RNA polymerases

  • DNA ligases

  • DNA polymerases

  • Restriction endonucleases


Biolistic technique is used in

  • Gene transfer process

  • Tissue culture process

  • Hybridisation process

  • Germplasm conservation process


The effect of cigarette smoking and radon in combination on lungs is

  • Fatal

  • Synergistic

  • Mutualistic

  • Antagonistic


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Which of the following species are restricted to an area?

  • Sympatric species

  • Sibling species

  • Allopatric species

  • Endemic species


Herbicide-resistant gene in a plant is

  • Mt

  • Gt

  • Ct

  • Bt


Select the incorrect statement.

  • Stellar’s sea cow and passenger pigeon got extinct due to over exploitation by men

  • The mitotic convention on biological diversity was held in 1992

  • Species diversity increase as we move away from the equator towards the poles

  • Lantana and Eichhomia are invasive weed species in India


The largest gene in man is

  • Insulin gene

  • Tumour suppressor gene

  • Beta globin gene of haemoglobin

  • Dystrophin


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Gyms revoluta is popularly known as

  • Sago palm

  • Royal palm

  • Date palm

  • Sea palm