List of top Questions asked in UP Board XII

Define linkage. Explain the effect of linkage on inheritance of two genes.
What do you mean by detritus and detritivores?
Why is the pyramid of energy never inverted? Explain.
Name the two strands of the structural gene DNA of a transcription unit.
Give an example of an ecosystem where the pyramid of biomass is inverted.
How many chromosomes are found in primary spermatocytes and secondary oocytes of a human being?
Name any two autosome linked recessive disorders.
Write the two general laws of inheritance proposed by Mendel.
Name the type of pollination found in cleistogamous flowers. Give one example.
Which of the following is an attribute characteristic of a population?
The enzyme that makes a cut at a specific position within the DNA is called:
The phenotypic ratio of classical Mendelian dihybrid cross is:
Testosterone hormone is synthesized and secreted by:
Describe negative interactions in plants with example.
Describe the applications of biotechnology in agriculture.
Describe the sex determination in human and honeybee.
Which type of population interaction is found in lichen? Describe.
State detail account of any two drugs obtained from plants and their effect.
What is primary productivity? Discuss in brief the factors affecting the primary productivity.
Write an essay on population stabilization.
What do you understand by Widal test? Describe.
Describe DNA fingerprinting technique in brief.
How would you produce pest resistant plants?
What is evolution? Write two evidences of evolution.
Write a note on Ganga action plan.