List of top Questions asked in UP Board XII

Write short notes on Lichen and Mycorrhiza.

What is transcription?

Write the name of the bacteria that converts milk into curd.

Name two nitrogen-fixing microorganisms.

Write the number of chromosomes in trisomic and monosomic conditions in humans.

What type of nucleus is found in bacterial cell?

What is a parthenocarpic fruit? Give one example.

Name the enzymes ( which cut the DNA at specific site and ( which join two DNA fragments.

Who is the father of Green Revolution in India?

The name of pathogen of typhoid is

Write two causes of biodiversity loss.

Which one of the following characters does not belong to xerophytic plant?

In Mendel's monohybrid cross, the phenotypic ratio of long and dwarf pea is

The endosperm of angiospermic plant is

Write a brief note on the role of lymphoid organs in the immune response. Elaborate the different types of lymphoid organs in the human body with examples.

Describe in brief the exponential growth curve with the help of a suitable example.

What is Biogas? How is it produced? Name the microbe involved in biogas production.

Explain the formation of Embryo sac with the help of a diagram.

Describe the Hershey-Chase experiment with labelled diagram. Write the conclusion drawn by the scientists after this experiment.

Trace the events that would take place in flowers from the time of fall of pollen grain on stigma up to completion of fertilization with the help of diagram.

What is biofertilizer? A farmer is advised to add a culture of which bacterium before sowing? How is this bacterium useful to the crop?

What are cleistogamous flowers? Can cross-pollination occur in cleistogamous flowers? State the reasons.

Write the important goals of Human Genome Project (HGP).

Describe mutualism with the help of the wasp-fig relationship.

How does the production of insulin take place in genetically modified organisms?