List of top Questions asked in UP Board XII

Describe the decomposition cycle in a terrestrial ecosystem with the help of a diagram.

Describe the mechanism of sex determination in honey bees and birds.

Discuss various measures for prevention and control of drug/ alcohol abuse.

Briefly describe the structure and function of antibody molecule.

Explain the nomenclature of restriction endonucleases. Add a note on its applications.

Define spermatogenesis. Describe the process of spermatogenesis with the help of schematic diagram.

What is trophic level? Comment upon the different types of trophic levels in an ecosystem.

Briefly describe the different methods used to transfer the recombinant DNA into the host cell.

What are transgenic plants? Describe benefits of transgenic plants in brief.

Describe the causes, detection and diagnosis of cancer in brief.

Write a short note on over exploitation.

What is adaptive radiation? Describe it with the help of a suitable example.

Describe various factors responsible for explosive population growth in India.

Comment upon the following: Infectious disease.

Explain test cross and back cross.

Comment upon the following: Amoebiasis.

What is Placenta? Describe different functions of placenta in brief.

What do you mean by Mendelian disorders? Give two examples of sex-linked Mendelian disorder.

Name the gene which can exhibit multiple phenotypic expressions.

What is trichoderma? Give one application of trichoderma as an effective biocontrol agent.

Explain Frame shift mutation with an example.

Write a note on photosynthetically active radiation.

Name the type of food chain which begins with dead organic matter.

What is the length of DNA in a typical nucleosome?

Name any two plants in which multicarpellary syncarpous gynoecium is found.