List of top Biology Questions asked in UP Board XII

Write short notes on the following: Lymphocytes in human blood
Write a short note on any three chromosomal aberrations (syndromes) found in humans.
Write a note on Nucleotide.
Describe the medicinal use of microorganisms.
Write a note on Natural Selection.
What is Gel Electrophoresis?
What do you mean by Medical Termination of Pregnancy (MTP)?
What is opium? Which plant is it obtained from?
How many chromosomes are found in Klinefelter and Turner Syndromes?
How many types of immunity occur in humans? Write their names.
What are antibiotics? Name any two microbes which are used in the production of antibiotics.
Describe the Hardy-Weinberg principle.
Write any three differences between anther and ovule.
What do you understand by the origin of life?
Explain any three important characteristics of a population.
What do you understand by infectious diseases?
Describe the human male reproductive system and explain the process of sperm formation.
Exonuclease and Endonuclease enzyme
What do you mean by sex-linked characters? Describe with the help of line sketches, the inheritance of two sex-linked characters in humans.
What do you mean by population? Describe population interactions.
Explain Mendel's law of dominance. Write a note on incomplete dominance.
How does fertilization take place in angiosperms? Describe the post-fertilization structures.
Differentiate between the following: (i) Plasmid DNA and Chromosomal DNA
How many codons are there in genetic codes?
What is the unit of genetics?