List of top Questions asked in UP Board XII

Describe the important enzymes required for genetic engineering.
What are the major causes of the loss of biodiversity?
What are cleistogamous flowers? Can cross-pollination occur in cleistogamous flowers? State the reasons.
What is biofertilizer? A farmer is advised to add a culture of which bacterium before sowing? How is this bacterium useful to the crop?
What is gene therapy? Illustrate this using the example of adenosine deaminase (AD deficiency.
Define any two of the following: ( Commensalism ( Logistic growth ( Parasitism
Write the important goals of Human Genome Project (HGP).
How does the production of insulin take place in genetically modified organisms?
Describe mutualism with the help of the wasp-fig relationship.
Write the difference between DNA and RNA.
Define population and community.
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.
Explain the causes of Klinefelter's syndrome. Also mention the symptoms of this syndrome.
The exaggerated response of the immune system to certain antigens present in the environment is called
PCR stands for
What are the finger-like projections on the edges of the infundibulum called?
Name the flower which shows incomplete dominance.
What is double fertilization?
If the sequence of one strand of DNA is written as follows: 5' - ATGC ATGC ATGC ATGC ATGC - 3', write down the sequence of the complementary strand in 3' → 5' direction.
What does ELISA stand for?
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.