List of top Biology Questions asked in UP Board XII

Explain the difference between population and community.

Cocaine is obtained from which plant?

Write a note on Bt cotton.

What is the function of Leydig cells?

Who gave the double helical model of DNA?

Unfertilized egg develops in which form of honeybee?

Differentiate between purine and pyrimidine bases.

What is the unit of heredity?

Write a note on typhoid fever.

Which of the following is a property of population?

Write an essay on biodiversity and its conservation.

Describe different population growth models in brief.

Write notes on the following: ( Colourblindness.

The number of chromosomes found in maize is

Suitable vector for cloning in plant cells is:

In Klinefelter syndrome, the number of sex chromosomes is:

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

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

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

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

Explain the reasons for ozone depletion in the stratosphere.

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

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

How does elephantiasis (Filariasis) occur?

Describe the common diseases found in humans.