List of top Biology Questions

What is a seed? Describe the structure of any one seed.
Write the name of any one sexually transmitted disease and describe its condition in brief.
Comment upon human insulin.
Who is the father of Green Revolution in India?
Write the name of the bacteria that converts milk into curd.
Name the enzymes ( which cut the DNA at specific site and ( which join two DNA fragments.
What type of nucleus is found in bacterial cell?
Name two nitrogen-fixing microorganisms.
Write the number of chromosomes in trisomic and monosomic conditions in humans.
What is transcription?
What is a parthenocarpic fruit? Give one example.
In Mendel's monohybrid cross, the phenotypic ratio of long and dwarf pea is
The endosperm of angiospermic plant is
Which one of the following characters does not belong to xerophytic plant?
The name of pathogen of typhoid is
Write two causes of biodiversity loss.
What is Biogas? How is it produced? Name the microbe involved in biogas production.
Describe the Hershey-Chase experiment with labelled diagram. Write the conclusion drawn by the scientists after this experiment.
Describe in brief the exponential growth curve with the help of a suitable example.
Explain the formation of Embryo sac with the help of a diagram.
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.
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.
What is biofertilizer? A farmer is advised to add a culture of which bacterium before sowing? How is this bacterium useful to the crop?
Define any two of the following: ( Commensalism ( Logistic growth ( Parasitism
Describe the important enzymes required for genetic engineering.