List of top Biology Questions asked in Bihar Board Class XII

Describe biofortification in brief.

Present a well-labelled neat and clean diagram of recombinant technology.

Describe the process of sex-determination in honeybees.

Present a neat, clean, and well-labelled diagram of an embryo inside the human uterus.

What do you understand by ground water? Describe the causes for its depletion and remedies.

Explain the differences between any two of the following: (a) Food chain and food web

Write any two differences between integument and testa.

Explain any two differences between c-DNA and s-DNA.

What is the importance of Red Data Book?

What is epistasis?

What is gene library?

Define commensalism and write two examples.

Define germplasm.

Mention any two harmful effects of sewage.

What is mycorrhiza?

What are pathogens? Write the names of any one plant and one animal pathogen.

What are sacred groves?

Write any two symptoms of sickle cell anaemia.

Mention any two benefits of self-pollination.

Write two differences between ontogeny and phylogeny.

What do you mean by camouflage?

What is Klinefelter syndrome?

What is the importance of microorganisms in research?

Write the names of any four species along with their scientific names.

Mention any two advantages of genetically modified animals.