List of top Questions asked in UP Board XII

Define population and community.
Describe the structure of human sperm with a well-labelled diagram.
PCR stands for
What is double fertilization?
The exaggerated response of the immune system to certain antigens present in the environment is called
Name the flower which shows incomplete dominance.
What are the finger-like projections on the edges of the infundibulum called?
What does ELISA stand for?
Briefly describe the mechanism of transcription in prokaryotes.
Give a brief account of different population growth models.
Write short notes on the following: (i) DNA Palindrome (ii) Carrying capacity
Exine layer of pollen grain is made up of
Briefly describe the role of hormones in follicular and luteal phase of menstrual cycle in female primates.
Which one of the following is not a stop terminator codon?
Describe in detail energy flow in an ecosystem.
Write short notes on the following: (i) Vaccination (ii) Bio-fertilizer
What are cloning vectors? Write a short note on characteristics of cloning vectors.
Differentiate between innate immunity and acquired immunity giving suitable examples.
Describe the law of independent assortment in a dihybrid cross.
What are transgenic animals? Describe the benefits of transgenic animals in brief.
Write short note on primary and secondary lymphoid organs.
Describe the applications of r-DNA technology in medicine.
Describe the structure of a typical biogas plant with the help of a suitable diagram.
Describe the process and importance of artificial hybridization in brief.
Draw a well-labelled diagram of an antibody molecule.