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Biology
List of top Biology Questions
What is the unit of heredity?
UP Board XII - 2025
UP Board XII
Biology
Genetics
Unfertilized egg develops in which form of honeybee?
UP Board XII - 2025
UP Board XII
Biology
Evolution and Adaptation
Cocaine is obtained from which plant?
UP Board XII - 2025
UP Board XII
Biology
Human health and disease
What is the function of Leydig cells?
UP Board XII - 2025
UP Board XII
Biology
The Male Reproductive System
Which of the following is a property of population?
UP Board XII - 2025
UP Board XII
Biology
Ecology
Suitable vector for cloning in plant cells is:
UP Board XII - 2025
UP Board XII
Biology
Biotechnology
Write an essay on biodiversity and its conservation.
UP Board XII - 2025
UP Board XII
Biology
Ecology
The number of chromosomes found in maize is
UP Board XII - 2025
UP Board XII
Biology
Genetics
In Klinefelter syndrome, the number of sex chromosomes is:
UP Board XII - 2025
UP Board XII
Biology
Genetics
Write notes on the following: ( Colourblindness.
UP Board XII - 2025
UP Board XII
Biology
Genetics
Describe different population growth models in brief.
UP Board XII - 2025
UP Board XII
Biology
Ecology
Explain the reasons for ozone depletion in the stratosphere.
UP Board XII - 2025
UP Board XII
Biology
Environmental Issues
What is megasporogenesis? Describe with a diagram the development of the female gametophyte in angiospermic plants.
UP Board XII - 2025
UP Board XII
Biology
Reproduction in Plants
Describe the structure of double helical DNA given by Watson and Crick with a diagram.
UP Board XII - 2025
UP Board XII
Biology
Molecular biology techniques
What are biofertilizers? State the role of microorganisms in their production.
UP Board XII - 2025
UP Board XII
Biology
Biotechnology
Write notes on the following: ( Diagram of transverse section of female ovary.
UP Board XII - 2025
UP Board XII
Biology
The Female Reproductive System
What do you understand by Bt? Explain by giving an example of Bt-cotton.
UP Board XII - 2025
UP Board XII
Biology
Biotechnology
How does elephantiasis (Filariasis) occur?
UP Board XII - 2025
UP Board XII
Biology
Human health and disease
What are the effects of drug and alcohol abuse on the body?
UP Board XII - 2025
UP Board XII
Biology
Human health and disease
Describe the common diseases found in humans.
UP Board XII - 2025
UP Board XII
Biology
Human health and disease
Explain the difference between exonuclease and endonuclease enzymes.
UP Board XII - 2025
UP Board XII
Biology
Molecular biology techniques
What do you understand by biopiracy?
UP Board XII - 2025
UP Board XII
Biology
Biotechnology
What is placenta? Write its functions.
UP Board XII - 2025
UP Board XII
Biology
The Female Reproductive System
State the characteristics of genetic code.
UP Board XII - 2025
UP Board XII
Biology
Molecular biology techniques
Describe the structure of microsporangium with diagram.
UP Board XII - 2025
UP Board XII
Biology
Reproduction in Plants
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