List of top Biology Questions asked in Bihar Board Class XII

What is the importance of microorganisms in research?
Present a well-labelled neat and clean diagram of recombinant technology.
Describe biofortification in brief.
Describe the process of sex-determination in honeybees.
Explain the differences between any two of the following: (a) Food chain and food web
What is the importance of Red Data Book?
What do you understand by ground water? Describe the causes for its depletion and remedies.
Present a neat, clean, and well-labelled diagram of an embryo inside the human uterus.
Write any two differences between integument and testa.
What is epistasis?
Explain any two differences between c-DNA and s-DNA.
Mention any two harmful effects of sewage.
Define commensalism and write two examples.
What are sacred groves?
What is gene library?
What are pathogens? Write the names of any one plant and one animal pathogen.
Define germplasm.
Write any two symptoms of sickle cell anaemia.
What is mycorrhiza?
Mention any two benefits of self-pollination.
Write the names of any four species along with their scientific names.
Write two differences between ontogeny and phylogeny.
What do you mean by camouflage?
Mention any two advantages of genetically modified animals.
What is Klinefelter syndrome?