List of top Questions asked in UP Board XII

Comment on in-situ and ex-situ conservation.
Mention any three drawbacks of insulin obtained from the pancreas of slaughtered cattle and pigs.
What is contact inhibition? Explain how the normal cell transforms into cancerous cell.
Differentiate between any two of the following:
(i) Hypocotyl and Epicotyl
(ii) Perisperm and Pericarp
(iii) Integument and Testa
Explain the salient features of Genetic code.
Define Parturition. Give an account of different hormones involved during this process.
Explain Competition and Parasitism with examples.
Write short notes on any two of the following: (i) Adenosine Deaminase Deficiency (ii) Interspecific Competition with example (iii) Human Genome Project
Describe the disorders from the following chromosomal abnormal arrangements: (i) Trisomy of Chromosome 21 (ii) XXY
A colourblind father has a daughter with normal vision and the daughter marries a man with normal vision. What is the probability of her son being a carrier for colourblindness? Explain with pedigree chart.
Write short notes on Active Immunity and Vaccination.
Draw the schematic chart representation of Oogenesis.
Explain Logistic Growth with equation.
Explain how distribution of animals and plants is affected by light, with examples.
Explain Stirred-tank Reactor.
Mention any three vectorless methods that are used to introduce recombinant DNA into competent host cell.
Explain Co-extinctions.
Which type of cross is used to determine the genotype of tall pea plant? Explain.
Why did Mendel select pea plants for his experiments?
What is the difference between false fruit and true fruit? Under which category does the apple fall and why?
Write the names of any two cyanobacteria responsible for nitrogen fixation.
Comment on Organic Farming.
In lac operon, 'Z' and 'Y' genes code for which enzymes? Also mention their functions.
Draw only the structure of antibody molecule.
Write any two reasons why Mendel's theory of inheritance remained unrecognised till 1900.