List of top Questions asked in UP Board XII

Describe the structure of human sperm with diagram.

Explain the law of incomplete dominance with an example.

What is the function of Leydig cells?

Cocaine is obtained from which plant?

What is the unit of heredity?

Who gave the double helical model of DNA?

Unfertilized egg develops in which form of honeybee?

Differentiate between purine and pyrimidine bases.

Write a note on Bt cotton.

Write a note on typhoid fever.

Write notes on the following: ( Colourblindness.

Describe different population growth models in brief.

Write an essay on biodiversity and its conservation.

The number of chromosomes found in maize is

In Klinefelter syndrome, the number of sex chromosomes is:

Suitable vector for cloning in plant cells is:

Which of the following is a property of population?

What are biofertilizers? State the role of microorganisms in their production.

How does elephantiasis (Filariasis) occur?

What do you understand by Bt? Explain by giving an example of Bt-cotton.

What are the effects of drug and alcohol abuse on the body?

Explain the reasons for ozone depletion in the stratosphere.

What is megasporogenesis? Describe with a diagram the development of the female gametophyte in angiospermic plants.

Write notes on the following: ( Diagram of transverse section of female ovary.

Describe the structure of double helical DNA given by Watson and Crick with a diagram.