Multiple Choice Questions

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The concept of hot- spot was first introduced by

  • Mayer

  • Simpson

  • Myers

  • David


C.

Myers

A biodiversity hotspot is a biogeographic region that is both a significant reservoir of biodiversity and is threatened with destruction. It specifically refers to 25 biologically rich areas around the world that have lost at least 70 percent of their original habitat. The concept of hot-spot was first introduced by Norman Myers in 1989, India has two biodiversity hotspots Eastern Ghats and Western Himalayas.


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'Kyoto Protocol' is a multination international treaty for

  • phasing out green house gases

  • controlling ozone destroying substances

  • management of hazardous wastes

  • conservation of biodiversity


Genes which are located only in the X-chromosome are known as

  • epistasis genes

  • holandric genes

  • operator genes

  • antiepistasis genes


Emasculation ensures cross-pollination in

  • staminate flower

  • bisexual flower

  • neuter flower

  • pistillate flower


Intermediate host of malarial parasite is

  • pig

  • man

  • mosquito

  • larva of mosquito


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Industrial melanism is an

  • effect of industrial pollution

  • effect of mutation

  • evidence of survival of fittest

  • evidence of favour of natural selection


Insect pest resistant Bt cotton plant was developed using

  • somaclonal variation

  • micropropagation

  • somatic hybridisation

  • Transgenic technology


Which codon is not an indicator of completion of protein synthesis?

  • UAG

  • AUG

  • UAA

  • UGA


With the rise of water temperature, dissolved oxygen

  • remains unchanged

  • increases in amount

  • decreases in amount

  • is more available to the aquatic organisms


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Formation of polysome does not require

  • rRNA

  • mRNA

  • tRNA

  • snRNA