List of top Questions asked in UP Board XII

What are lymphocytes? Briefly describe the functions of two special types of lymphocytes present in our blood.
Briefly explain the different steps involved in the construction of recombinant DNA.
Describe the structure and functions of an antibody.
What is a trophic level? Comment on different types of trophic levels in an ecosystem.
Describe different abiotic and biotic agents of pollination in detail.
Describe the characteristic features of the human genome.
What is an ecological pyramid? Describe different types of ecological pyramids in brief.
Write short notes on the following: Effect of invasive alien species
Endangered species and their conservation
Comment upon the following: Infectious diseases
Describe gel electrophoresis technique in brief.
Comment on the following: Auto-immune disease Opioids
Give an example where more than two alleles govern the same character.
Who propounded the chromosomal theory of inheritance?
Name the food chain which begins with dead and decaying organic matter.
Who among the following proposed that evolution of life forms occurred due to use and disuse of organs?
Which of the following is a non-infectious disease?
Which of the following methods is used to introduce foreign DNA into the host cells?
Which hormone is secreted by corpus luteum?
What are stem cells?
Pollen grains are well preserved as fossils because of the presence of which of the following?
Describe the dihybrid cross with the help of a checker-board.

Write short notes on the following: 

(i) Bioinformatics 

(ii) Amniocentesis

Write a note on seven contrasting traits studied by Mendel in pea plants.
Differentiate between Phenotype and Genotype.