Multiple Choice Questions

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Intermediate host of malarial parasite is

  • pig

  • man

  • mosquito

  • larva of mosquito


B.

man

Malaria is a mosquito-borne infections disease caused by Plasmodium. It is mainly transmitted by the bite of an infected female Anopheles mosquito, which introduces the organism from its saliva into man's circulatory system (which is an intermediate host in which asexual reproduction takes place or the larval stages of animal parasites develops).


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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


Emasculation ensures cross-pollination in

  • staminate flower

  • bisexual flower

  • neuter flower

  • pistillate flower


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

  • UAG

  • AUG

  • UAA

  • UGA


The concept of hot- spot was first introduced by

  • Mayer

  • Simpson

  • Myers

  • David


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Formation of polysome does not require

  • rRNA

  • mRNA

  • tRNA

  • snRNA


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

  • epistasis genes

  • holandric genes

  • operator genes

  • antiepistasis genes


Insect pest resistant Bt cotton plant was developed using

  • somaclonal variation

  • micropropagation

  • somatic hybridisation

  • Transgenic technology


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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Industrial melanism is an

  • effect of industrial pollution

  • effect of mutation

  • evidence of survival of fittest

  • evidence of favour of natural selection