List of top Biology Questions asked in PSEB XII

Expand PCR. Mention its any one importance in biotechnology.
Write two advantages of GM crops.
Define sewage. Why is it harmful to us?
What do you mean by hotspots of biodiversity?
What is DNA fingerprinting? Mention its two applications.
Explain the structure of transcription unit with diagram.
Differentiate between innate and acquired immunity.
Name two permanent methods of birth control.
Expand: ZIFT and ICSI
What is convergent evolution. Give an example
What do you mean by law of segregation.
Write two functions of tapetum.
Sacred groves is an example of…………….conservation
What will the progeny be if a woman carrier for haemophilia marries a normal man?
Dragonflies are used as biocontrol agents to protect the crops from …………….
What are the major components of seminal plasma?
Copper T is used as birth control device by women
In national park protection is given to
Sickle cell anaemia is an example of point mutation.
In gel electrophoresis DNA fragments separate according to their charge
Vaccination is a type of innate immunity
Substances which cause allergy are called ……..
Zygote divides to form ……….which is implanted in uterine wall
Mycohhroezais example of
At each tropic level in which form energy is lost