Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

71.

Cotton fibre is basically a type of

  • trichome

  • scale

  • dried seed coat

  • non glandular hair


72.

The term 'alpha diversity' refers to

  • genetic diversity

  • community and ecosystem diversity

  • species diversity

  • diversity among the plants


73.

Percentage composition of fibroin and sericin in silk is

  • 50 : 40

  • 80 : 20

  • 30 : 70

  • 40 : 60


74.

Which one of the following is biological insecticide?

  • Tiger beetle

  • Caterpillar

  • Silkmoth

  • Mazra poka


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75.

Which one of the following diseases is spread by housefly?

  • Dengue fever

  • Encephalitis

  • Filariasis

  • Typhoid


76.

Nutrient enrichment of a lake will cause

  • eutrophication

  • stratification

  • biomagnification

  • bioaccumulation


77.

Tuberculosis is caused by

  • Mycobacterium sp.

  • Aspergillus sp.

  • Clostridium sp.

  • Vibrio sp.


78.

The scientific name of Java man is

  • Homo habilis

  • Homo sapiens neandarthalensis

  • Homo erectus erects

  • Australopithecus bisei


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79.

Which of the following condition is called monosomic?

  • 2n + 1

  • 2n + 2

  • n + 1

  • 2n - 1


D.

2n - 1

A cell or individual that is basically diploid but that has only one copy of one particular chromosome type and thus, has chromosome number 2- 1 is known as monosomic condition.


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80.

Which of the following is structural subunit of DNA?

  • Protein

  • Carbohydrate

  • RNA

  • Nucleotide


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