Organization : Karnataka Department of Pre-University Education
Exam : II PU Biology
Document type : Question Paper
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Pre-University Education Biology Question Paper
Total No. of Questions : 42 ] [ Total No. of Printed Pages : 8
March, 2008 Biology
Related : PUC Karnataka English II Model Question Paper : www.pdfquestion.in/5967.html
i) Draw diagrams wherever necessary.
ii) Unlabelled diagrams do not get any marks.
PART I
( BOTANY )
PART – A
Answer the following questions in one word or in one sentence each :
1. What is duramen –
2. Give an example for non-sense codon.
3. Name the phase which is common for both aerobic and anaerobic
4. Which is the most abundant RNA in the cell –
5. What are complementary cells –
PART – B
Answer any five of the following in 2 to 5 sentences each : 5 8 2 = 10
6. What is semiconservative method of DNA replication – What is the
7. What is annual ring – List any two differences between tracheids and.
8. Define the terms : a) Deplasmolysis b) Wall pressure.
9. Write any four physiological role of Cytokinin in plants.
10. Define growth. Mention any two growth inhibiting hormones.
11. Describe balsam plant experiment to prove ascent of sap.
PART – C
Answer any four of the following in about 200 to 250 words each
12. Explain translation of protein synthesis.
13. What is gene therapy – Explain the types. Add a note on any four
14. Briefly explain tissue culture technique using stem.
15. What are meristems – With a neat labelled diagram,
16. Explain potassium pump theory.
17. a) Write the schematic representation of cyclic photophosphorylation.
b) What is C 4 -Pathway – Give an example.
PART – D
I. Answer any one of the following : 1 8 5 = 5
18. a) Draw a neat labelled diagram of ultrastructure of T.S. of Chloroplast.
b) What is RQ – Name the organic compound whose RQ value is
c) What is Pasteur effect –
19. Give reasons :
a) DNA finger printing cannot be used for distinguishing identical
II. Answer any one of the following : 1 8 5 = 5
20. With a neat labelled diagram explain the T.S. of dicot leaf.
21. a) What is the significance of cobalt chloride experiment –
b) Level of mercury rises in the capillary tube of simple potometer. Why –
c) Draw a neat labelled diagram of Ganong’s respiroscope experiment.
PART II
( ZOOLOGY )
PART – E
Answer the following questions in one word or one sentence each :
22. Why is blood group ‘O’ called universal donor –
23. What is global warming –
24. Name the enzyme which converts fibrinogen into fibrin.
25. What is spermatid –
26. Define species diversity.
PART – F
Answer any five of the following about 2 to 5 sentences each :
27. Write a note on erythroblastosis foetalis.
28. List any four consequences of acid rain.
29. What is patenting life forms –
30. Mention any two functions of oxytocin.
31. Mention any four causes of infertility in males.
32. What is chloride shift –
March 2009 :
Part I — ( Botany )
Part – A :
Answer the following questions in one word or in one sentence
1. Name the pentose sugar present in RNA.
2. Name the living mechanical tissue in plants.
3. Define imbibition.
4. State Blackman’s law of limiting factors.
5. Name the hormone responsible for Richmond-Lang effect in plants.
Part – B :
Answer any five of the following in 2 to 5 sentences
6. Differentiate between sense and anti-sense strands of DNA.
7. What is recombinant DNA technology ? Mention two applications of it.
8. Mention the differences between parenchyma and sclerenchyma.
9. What is transpiration ? Mention two types.
10. Mention two physiological functions of Abscissic acid.
11. Mention two commercial applications of NAA ( Naphthalene Acetic Acid ).
Part – C :
Answer any four of the following in about 200 to 250 words
12. Explain the semi-conservative method of DNA replication.
13. Explain the steps involved in DNA fingerprinting technique.
14. Explain the structure of p UC-18 with a labelled diagram.
15. With labelled diagrams, explain the kinds of xylem vessels ( tracheae ) based on their lignification.
16. Explain transpiration pull theory of ascent of sap. Mention any two merits of it.
17. What is Pasteur’s effect ? Explain any four external factors affecting the rate of respiration.
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Define asexual reproduction