List of top Biology Questions asked in UP Board XII

What does ELISA stand for?

What are the finger-like projections on the edges of the infundibulum called?

Describe in detail energy flow in an ecosystem.

Briefly describe the mechanism of transcription in prokaryotes.

Exine layer of pollen grain is made up of

Which one of the following is not a stop terminator codon?

Give a brief account of different population growth models.

Briefly describe the role of hormones in follicular and luteal phase of menstrual cycle in female primates.

Write short notes on the following: (i) DNA Palindrome (ii) Carrying capacity

Describe the applications of r-DNA technology in medicine.

What are transgenic animals? Describe the benefits of transgenic animals in brief.

Describe the law of independent assortment in a dihybrid cross.

Describe the structure of a typical biogas plant with the help of a suitable diagram.

Write short note on primary and secondary lymphoid organs.

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.

What is age pyramid? Give a diagrammatic representation of the age pyramid of an expanding human population.

Describe the process and importance of artificial hybridization in brief.

Write a note on enzymes used in DNA replication.

What is multiple allelism? Give an example.

Give a brief account of different components of a nucleotide.

Comment upon Gause’s "competitive exclusion principle".

Write a note on Intra-Uterine Devices (IUD’s) and their applications.

Draw a well-labelled diagram of an antibody molecule.