List of top Questions asked in PSEB XII

Name and explain the type of interaction between clown fish and sea anemone.
Write a short note on industrial melanism.
What do you mean by hotspots of biodiversity?
Differentiate between innate and acquired immunity.
What are bioreactors. Name its two types.
Expand PCR. Mention its any one importance in biotechnology.
Write two advantages of GM crops.
Define sewage. Why is it harmful to us?
What is DNA fingerprinting? Mention its two applications.
Explain the structure of transcription unit with diagram.
Write any two points of differences between grazing and detritus food chain.
Sacred groves is an example of…………….conservation
What do you mean by law of segregation.
What will the progeny be if a woman carrier for haemophilia marries a normal man?
Write two functions of tapetum.
Dragonflies are used as biocontrol agents to protect the crops from …………….
What are the major components of seminal plasma?
Name two permanent methods of birth control.
Expand: ZIFT and ICSI
What is convergent evolution. Give an example
In national park protection is given to
Sickle cell anaemia is an example of point mutation.
Vaccination is a type of innate immunity
Substances which cause allergy are called ……..
In gel electrophoresis DNA fragments separate according to their charge