List of top Biology Questions asked in UP Board XII

Suitable vector for cloning in plant cells is:

Write notes on the following: ( Colourblindness.

The number of chromosomes found in maize is

In Klinefelter syndrome, the number of sex chromosomes is:

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

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

How does elephantiasis (Filariasis) occur?

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

Explain the reasons for ozone depletion in the stratosphere.

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

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?

State the characteristics of genetic code.

Explain the difference between exonuclease and endonuclease enzymes.

Why did Mendel choose pea plants for his experiments?

What do you understand by biopiracy?

Describe the structure of microsporangium with diagram.

What is placenta? Write its functions.

Explain the difference between in-situ and ex-situ conservations.

Describe the common diseases found in humans.

State the main features of human genome.

Write a note on Biosphere.

What is the total number of chromosomes in humans?

State two distinctive properties of any population.

How many contrasting characters were there in the pea plant studied by Mendel?