Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

71.

Stop codons are

  • AUG, GUG

  • UAA, UGA, UAG

  • UAC, UGG

  • AGU, AGA, UAC


72.

A lake with nutrients is called

  • trophic

  • euphotic

  • oligotrophic

  • eutrophic


73.

Retrovirus have genetic material

  • DNA only

  • RNA only

  • DNA or RNA only

  • either DNA or RNA


74.

According to Kyoto protocol the major nations abide to reduce concentration of green house gases by

  • 2008

  • 2010

  • 2012

  • 2018


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75.

Study of Ecology of population is called

  • Autecology

  • Synecology

  • Ecotype

  • Demecology


D.

Demecology

Demecology is a group of individuals of the same species that live in the same area.

Autecology deals with the biological relationship between an individual organism or an individual species and its environment.

Synecology deals with the distribution, abundance and interaction of living organisms at the level of communities, populations and ecosystems.

Ecotype is a distinct form or race of a plant or animal species occupying a particular habitat.


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76.

One gene- one enzyme hypothesis of Beadle and Tatum was experimentally proved on

  • Saccharomyces 

  • Neurospora crassa

  • Lathyrus odoratus

  • Claviceps


77.

Which of the following is not a Pyrimidine?

  • Thymine

  • Uracil

  • Guanine

  • Cytosine


78.

Bio- indicators are used for

  • oxygen demand

  • air pollution

  • mineral present

  • All of the above


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79.

Nitrifying bacteria are able to

  • convert atmospheric nitrogen into soluble forms

  • convert ammonia to nitrate

  • ammonia to nitrogen

  • nitrate to nitrogen


80.

RNA is not found in

  • chromosome

  • plasmalemma

  • nucleolus

  • ribosome


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