List of top Questions asked in UP Board XII- 2025

Explain the difference between population and community.

Explain the importance of humans in the ecosystem.

What is the unit of heredity?

Who gave the double helical model of DNA?

Differentiate between purine and pyrimidine bases.

Unfertilized egg develops in which form of honeybee?

What is the function of Leydig cells?

Cocaine is obtained from which plant?

Write a note on typhoid fever.

Write a note on Bt cotton.

Write notes on the following: ( Colourblindness.

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:

Describe different population growth models in brief.

Write an essay on biodiversity and its conservation.

Which of the following is a property of population?

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

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

How does elephantiasis (Filariasis) occur?

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.

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

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