List of top Biology Questions asked in Bihar Board Class XII

Which of the following methods is used to inject recombinant DNA into nucleus of animal cell directly?
At which level is natural selection operated to evolve the desired traits?
Which of the following is not the reason for global warming?
Which of the following statements is incorrect about organic farming?
Which of the following reproduces once in a lifetime?
Which of the following statements is incorrect about temperature?
When percentage of individuals of pre-reproductive, reproductive and post-reproductive phase is in decreasing order in the age pyramid of human population, it shows that population is
What was the reason for co-existence of five closely related species of warblers?
HIV attacks on which of the following cells?
According to Robert May, how much is the global species diversity?
Biodiversity of India is what percentage of the total global species diversity?
Going down of inorganic water soluble nutrients into the soil nutrients is called as
Name of Ramdeo Mishra is associated with which field of research?
What was the reason for extinction of more than 200 species of Cichlid fish in Lake Victoria?
How many varieties of Basmati rice are grown in India?
What is the use of alpha-1-antitrypsin?
At what pH insecticidal protein synthesized by Bacillus thuringiensis becomes active?
Which of the following methods is used for the amplification of nucleic acid?
RNA interference is utilized to prevent nematode infestation in tobacco plants. By which vector are nematode specific genes introduced?
Which of the following organizations makes decision regarding the validity of GM research and the safety of introducing GM organisms?

पौधों में शाकाहारी प्रतिरोधी जीन है 
 

'सुनहरा धान' ऐसा चावल है जो समृद्ध है 
 

जीन अभिव्यक्ति का नियंत्रण किन-किन स्तर पर होता है ? 
 

RNA के किस रूप की संरचना तिपर्णी जैसी होती है ? 
 

क्लोनल प्रतिरोपण तकनीक की खोज किनके द्वारा की गई थी ?