March 6, 2014

Botany Imp Questions for IPE - Senior Inter VSAQs as per New Syllabus

1. What is a plasmid? What is its significance?
2. What is conjugation? Who discovered it and in which organism?
3. What is transformation? Who discovered it and in which organism?
4. What is transduction? Who discovered it and in which organism?
5. What is the shape of T¬4 phage? What is its genetic material?
6. What are virulent phages? Given an example.
7. Define lysis and burst size with reference to viruses and their effects on host cells.
8. What are temperate phages? Give one example.
9. Mention the differences between virulent phages and temperate phages.
10. Who proposed the chromosome theory of inheritance?

11. What is point mutation? Give an example.
12. Explain the terms phenotype and genotype.
13. Distinguish between heterochromatin and euchromatin. Which of the two is transcriptionally active?
14. Who proved that DNA is genetic material? What is the organism they worked on?
15. Given below is the sequence of coding strand of DNA in a transcription unit 3’-AATGCAGCTATTAGG-5’
Write the sequence of
a) Its complementary strand
b) The mRNA
16. What is the difference between exons and introns?
17. What is meant by capping and tailing?
18. In a typical DNA molecule, the proportion of Thymine is 30% of the N bases. Find out the percentages of other N bases.
19. The proportion of nucleotides in a given nucleic acid is: Adenine 18%, Guanine 30%, Cytosine 42% and Uracil 10%. Name the nucleic acid and mention the number of strands in it.
20. What are molecular scissors? Where are they obtained from?

21. Name any two artificially restructured plasmids.
22. What is EcoRI? How does it function?
23. What are cloning vectors? Give an example.
24. Name the nematode that infects the roots of tobacco plants. Name the strategy adopted to prevent this infestation.
25. Give one example for each of transgenic plants which are suitable for food processing and those with improved nutritional quality.
26. What is meant by ‘hidden hunger’?
27. Name two semi-dwarf varieties of rice developed in India.
28. Give two examples of wheat varieties introduced in India which are high yielding and disease resistant.
29. Give two examples of fungi used in SCP production.
30. What is emasculation? Why and when is it done?

31. Give any two important contributions of Dr. M.S. Swaminathan.
32. Which two species of sugarcane were crossed for better yield?
33. Why does Swiss cheese have big holes? Name the bacteria responsible for it.
34. Name a microbe used for statin production. How do statins lower blood cholesterol level?
35. Give any two microbes that are useful in bio technology.
36. Name any two genetically modified crops.
37. Name any two industrially important enzymes.
38. In which food would you find lactic acid bacteria? Name the bacterium.
39. Name any two fungi which are used in the production of antibiotics.
40. Name the scientists who were credited for showing the role of penicillin as an antibiotic.

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