MODEL QUESTION PAPER-2-BIOLOGY

 

MODEL QUESTION PAPER-2

IIND PUC -BIOLOGY

TIME: 3 HRS                                                                                                 MAX MARKS: 90

INSTRUCTIONS:   1. Draw diagrams wherever necessary.

                         2. Unlabelled diagrams do not carry any marks

PART-I   BOTANY

PART-A

ANSWER THE FOLLOWING QUESTIONS IN ONE WORD OR ONE-SENTENCE EACH:                                         1X5=5

1. What is hybridoma?

2. Which enzyme synthesizes an RNA strand on template strand during transcription?

3. Expand ABA.

4. What is the function of RUBISCO?

5.  Define respiratory quotient.

PART-B

ANSWER ANY OF FIVE OF THE FOLLOWING QUESTIONS IN 2-5 SENTENCES EACH:                                                                                                                                                     2X5=10

6. Draw labeled diagram to show different regions of t-RNA molecule.

7. Mention any four characters of genetic code.

8. Mention any four functions of parenchyma.

9. Define plasmolysis. Give an example for it.

10. Mention any four factors affecting transpiration.

11. Name any four synthetic auxins.

PART-C

ANSWER ANY FOUR OF THE FOLLOWING QUESTIONS IN 200-250 WORDS WHEREVER APPLICABLE:     5X4=20

12. Describe double helical model of DNA.

13. Explain the technique of development of golden rice.

14. Explain intrastelar secondary growth in dicot stem.

15. Explain Dixon and Jolly’s Transpiration pull-cohesion theory of ascent of sap.

16. a) Write a brief note on human genome project.

      b) Mention any two application of DNA fingerprinting.

      c) Mention the importance of PUC18 in genetic engineering.

17. Describe the reaction involved in Calvin Cycle/ Dark reaction.

PART-D

I. ANSWER ANY ONE OF THE FOLLOWING:                                                                                                                                                                                                               5X1=5

18. What is terminal oxidation? Explain the process of terminal oxidation.

19. a) 2,4-D is effective as a weed killer in cereal crop field.

      b) Some bacteria exhibit photosynthesis but they do not produce oxygen.

      c) In treatment of Diabetes, humulin is considered more advantageous than the conventional method.

      d) Fruit of some plants are naturally seedless.

      e) Companion cells is considered as sister cell of sieve tube element.

II. (Questions from practical syllabus only). Answer any one of the following:                                                                                                                                                         1×5=5

20. With a neat labeled diagram of TS of dicot root, describe the arrangement of vascular tissues.

21. Explain paper chromatography experiment.

PART-II -ZOOLOGY

PART-A

ANSWER THE FOLLOWING QUESTIONS IN ONE WORD OR ONE-SENTENCE EACH:                                         1X5=5

22. What are holandric genes?

23. What is global warming?

24. Give an equation for cardiac output.

25. Define chemotaxis.

26. Name an enzyme present in the saliva meant for killing bacteria.

PART-B

ANSWER ANY OF FIVE OF THE FOLLOWING QUESTIONS IN 2-5 SENTENCES EACH:                                                                                                                                                     2X5=10

27. What is test cross? Mention its significance.

28. What is acid rain? Mention any two effects of acid rain.

29. List any four functions of hind brain.

30. Differentiate between Afforestation and reforestation.

31. Draw a neat labeled diagram of T.S of spinal cord.

32. List any four differences between spermatogenesis and oogenesis.

PART-C

ANSWER ANY FOUR OF THE FOLLOWING QUESTIONS IN 200-250 WORDS WHEREVER APPLICABLE:                                                                                                                               5X4=20

33. What is dihybrid cross? Explain it with suitable examples.

34. a) Which is the common passage for both air and food in man.

      b) Write two causes and two symptoms of Ulcer.

      c) What are narcotic drugs?

35. What is biodiversity depletion? Explain any four anthropocentric causes.

36. What is cleavage? Describe the first four cleavages of frog egg.

37. Draw a neat labeled diagram of Nephron.

38. What is breathing? Explain the mechanism of breathing.

PART-D

I. ANSWER ANY ONE OF THE FOLLOWING:                                                                                                                                                                                                               5X1=5

39. Draw a neat labeled diagram of digestive system of man.

40. a) What is urochrome?

      b) What is the function of acrosome?

      c) Name the bacterium which causes Syphilis.

      d) What is mulching?

      e) Mention the phenotypic ratio of F2 generation in incomplete dominance.

II. (Questions from practical syllabus only). Answer any one of the following:                                                                                                                                                         1×5=5

41. With a neat labeled diagram explain the structure of human sperm.

42. a) Where  do you find gillson’s capsule?

      b) What are chondrocytes?

      c) Name the structural and functional unit of nervous system.

      d) How do you detect the presence of albumin in the given sample?

      e) Where do you find lacteals?

 

 

Comments

  • G.s siddalingamurthy  On October 20, 2008 at 4:20 pm

    Each hepatic lobule surrounded by Glisson’s capsule

  • naveen  On January 23, 2009 at 3:30 am

    hh

  • naveen  On January 23, 2009 at 3:34 am

    ss

  • PRADEEP.P  On March 17, 2009 at 12:59 pm

    THANK YOU VERY MUCH…..

  • pucpcmb  On October 22, 2009 at 6:56 am

    DNA polymerase can add a new nucleotide only when there is a preexisting OH group at the 3′ end. Since there are no new nucleotides available for DNA pol in the newly synthesizing strand, it uses RNA primer for this process.

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