List of top Biology Questions asked in UP Board XII

What are the major causes of the loss of biodiversity?

Describe the important enzymes required for genetic engineering.

Explain the causes of Klinefelter's syndrome. Also mention the symptoms of this syndrome.

Write two useful functions of Lactic Acid Bacteria (LA.

Draw a well-labelled diagram of DNA double helix model.

What do you mean by metastasis?

Describe the structure of human sperm with a well-labelled diagram.

Write the difference between DNA and RNA.

Define population and community.

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

PCR stands for

What does ELISA stand 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.

Give a brief account of different population growth models.

Briefly describe the mechanism of transcription in prokaryotes.

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

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

Exine layer of pollen grain is made up of

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

Describe in detail energy flow in an ecosystem.

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.