Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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61.

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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62.

Which of the following species are restricted to an area?

  • Sympatric species

  • Sibling species

  • Allopatric species

  • Endemic species


63.

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


64.

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

  • Fatal

  • Synergistic

  • Mutualistic

  • Antagonistic


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65.

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

  • RNA polymerases

  • DNA ligases

  • DNA polymerases

  • Restriction endonucleases


66.

Biolistic technique is used in

  • Gene transfer process

  • Tissue culture process

  • Hybridisation process

  • Germplasm conservation process


67.

The largest gene in man is

  • Insulin gene

  • Tumour suppressor gene

  • Beta globin gene of haemoglobin

  • Dystrophin


68.

Herbicide-resistant gene in a plant is

  • Mt

  • Gt

  • Ct

  • Bt


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69.

Skin colour is controlled b

  • Single gene

  • 3 pairs of genes

  • 2 pairs of genes

  • 2 pairs of genes with an intragene


70.

Gyms revoluta is popularly known as

  • Sago palm

  • Royal palm

  • Date palm

  • Sea palm


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