Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

51.

Which one of the following is the correctly matched pair of an endangered animal and a National Park?

  • Lion — Corbett National Park

  • Rhinoceros — Kaziranga National Park

  • Wild ass — Dudhwa National Park

  • Wild ass — Dudhwa National Park

672 Views

52.

A person showing unpredictable moods, outbursts of emotion, quarrelsome behaviour and conflicts with others is suffering from

  • schizophrenia

  • borderline personality disorder (BPD)

  • mood disorders

  • mood disorders

1130 Views

53.

Curing of tea leaves is brought about by the activity of

  • bacteria

  • mycorrhiza

  • viruses

  • viruses

1234 Views

54.

An important evidence in favour of organic evolution is the occurrence of

  • homologous and vestigial organs

  • analogous and vestigial organs

  • homologous organs only

  • homologous organs only

533 Views

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55.

Which one of the following is not a living fossil?

  • King crab

  • Sphenodon

  • Archaeopteryx

  • Archaeopteryx

473 Views

56.

Annual migration does not occur in the case of

  • salmon

  • siberian crane

  • salamander

  • salamander

484 Views

57.

Which of the following pairs of an animal and a plant represents endangered organisms in India?

  • Bentinckia nicobarica and red panda

  • Tamarind and rhesus monkey

  • Cinchona and leopard
  • Cinchona and leopard
700 Views

58.

Jurassic period of the Mesozoic era is characterised by

  • gymnosperms are dominant plants and first birds appear

  • radiation of reptiles and origin of mammal like reptiles

  • dinosaurs become extinct and angiosperms appear

  • dinosaurs become extinct and angiosperms appear

490 Views

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59.

Microbes found to be very useful in genetic engineering are

  • Escherichia coli and Agrobacterium tumefaciens

  • Vibrio cholerae and a tailed bacteriophage

  • Diplococcus sp. and Pseudomonas sp

  • Diplococcus sp. and Pseudomonas sp


A.

Escherichia coli and Agrobacterium tumefaciens

Escherichia coli and Agrobacterium tumefaciens are the microbes found to be very useful in genetic engineering. 
E. coli is a motile, gram negative, rod shaped bacterium which is a normal inhabitant of human colon. It is most extensively used in bacterial genetics and molecular biology.
Agrobacterium tumefaciens is a soil bacterium. It has Ti plasmid (Tumour inducing plasmid) and it can be used for the transfer of a desired gene in dicot plants.

422 Views

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60.

Which of the following is considered a hot-spot of biodiversity in India?

  • Western ghats

  • Indo-Gangetic plain

  • Eastern ghats

  • Eastern ghats

769 Views

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