TN 11th Question Paper 2023 Microbiology

Tamil Nadu
State Board

2023
QUESTION
PAPER

No. of Printed Pages : 11
6762
!6762IstYearMicrobiology! £vÄ Gs
Register Number

PART - III
~sq°›¯À / MICROBIOLOGY
( uªÌ ©ØÖ® B[Q» ÁÈ / Tamil & English Version)

Põ» AÍÄ : 3.00 ©o ÷|µ® ] [ ö©õzu ©v¨ö£sPÒ : 70

Time Allowed : 3.00 Hours ] [ Maximum Marks : 70

AÔÄøµPÒ : (1) AøÚzx ÂÚõUPЮ \›¯õP £vÁõQ EÒÍuõ GߣuøÚ \›£õºzxU
öPõÒÍÄ®. Aa_¨£vÂÀ SøÓ°¸¨¤ß AøÓU PsPõo¨£õÍ›h®
EhÚi¯õPz öu›ÂUPÄ®.
(2) }»® AÀ»x P¸¨¦ ø©°øÚ ©mk÷© GÊxÁuØS®,
AiU÷PõikÁuØS® £¯ß£kzu ÷Ásk®. £h[PÒ ÁøµÁuØS
ö£ß]À £¯ß£kzuÄ®.
(3) ÷uøÁ¯õÚ Ch[PÎÀ £h[PÒ ÁøµP.
Instructions : (1) Check the question paper for fairness of printing. If there is any lack of
fairness, inform the Hall Supervisor immediately.
(2) Use Blue or Black ink to write and underline and pencil to draw
diagrams.
(3) Draw diagrams wherever necessary.

£Sv & I / PART - I
SÔ¨¦ : (i) AøÚzx ÂÚõUPÐUS® Âøh¯ÎUPÄ®. 15x1=15

(ii) öPõkUP¨£mkÒÍ ©õØÖ ÂøhPÎÀ ªPÄ® Hئøh¯ Âøhø¯z
÷uº¢öukzxU SÔ±mkhß Âøh°øÚ²® ÷\ºzx GÊuÄ®.
Note : (i) Answer all the questions.

(ii) Choose the most appropriate answer from the given four alternatives
and write the option code and the corresponding answer.

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6762 2

1. RÌUPõq® G¢u ©¸¢øu ö\Àö©ß B¤µPõ® ÁõUì÷©ß Psk¤izuõº ?
(A) {÷¯õø©]ß (B) BUi÷Úõø©]ß
(C) ìmöµ¨÷hõø©]ß (D) ÷©ØTÔ¯ AøÚzx®
Which of the following antibiotics was discovered by Selman Abraham Waksman ?
(a) Neomycin (b) Actinomycin
(c) Streptomycin (d) All the above

2. hõºU ¥Àm ~s÷nõUQ°ß uÛzußø© ¯õx ?
(A) Ps A¸S ÂÀø» (B) JÎ ¦Põu ÁmhzuPk
(C) Gsön´ ‰ÌS ÂÀø» (D) ö£õ¸Í¸S ÂÀø»
What is the distinct feature of dark field microscope ?
(a) Ocular lens (b) Opaque disc
(c) Oil immersion lens (d) Objective lens

3. TØÖ (I) : ©õØÖ \õ¯zvÀ JßÖUS® ÷©Ø£mh \õ¯® £¯ß£kzu¨£kQÓx.
TØÖ (II) : £õUj›¯õ ö\ÀPÐÒ C¸÷ÁÖ {Ó[PøÍ HØPa ö\´QÓx.
(A) TØÖ (I) ©ØÖ® TØÖ (II) uÁÖ
(B) TØÖ (I) ©ØÖ® TØÖ (II) \›
(C) TØÖ (I) uÁÖ, TØÖ (II) \›
(D) TØÖ (I) \›, TØÖ (II) uÁÖ
Statement (I) : Differential staining uses more than one stain.
Statement (II) : It imparts two or more different colours to bacterial cells.
(a) Statement (I) and (II) are false
(b) Statement (I) and (II) are true
(c) Statement (I) is false and (II) is true
(d) Statement (I) is true and (II) is false

4. UV ìö£Umµ® EÔg_u¾US¨ £¯ß£kzu¨£k® Aø»}Í® __________.
(A) 20 Å (B) 4000 Å (C) 4500 Å (D) 2600 Å
Wavelength used for the absorption of UV Spectrum is :

(a) 20 Å (b) 4000 Å (c) 4500 Å (d) 2600 Å

3 6762

5. ö£õ¸zxP :
(1) \ÆÄ ÁiPmi (i) HEPA
(2) ö£ºU¥Àm ÁiPmi (ii) ö\À¾÷»õì A]÷hm
(3) PõØÖ ÁiPmi (iii) Bìö£ìhõì
(4) ^mì ÁiPmi (iv) øh¯ ©õmi¯ì Gºz
(A) (1)-(ii), (2)-(iv), (3)-(i), (4)-(iii)
(B) (1)-(iii), (2)-(iv), (3)-(i), (4)-(ii)
(C) (1)-(i), (2)-(iv), (3)-(ii), (4)-(iii)
(D) (1)-(i), (2)-(iii), (3)-(iv), (4)-(ii)
Match the following :
(1) Membrane filter (i) HEPA
(2) Berkefield filter (ii) Cellulose acetate
(3) Air filter (iii) Asbestos
(4) Seitz filter (iv) Diatomaceous earth
(a) (1)-(ii), (2)-(iv), (3)-(i), (4)-(iii)
(b) (1)-(iii), (2)-(iv), (3)-(i), (4)-(ii)
(c) (1)-(i), (2)-(iv), (3)-(ii), (4)-(iii)
(d) (1)-(i), (2)-(iii), (3)-(iv), (4)-(ii)

6. ¤›zuÔ FhPzvØS Kº GkzxUPõmk :
(A) Cµzu APõº (B) EMB APõº
(C) (A) ©ØÖ® (B) (D) ÷©ØTÔ¯ GxÄ® CÀø»
_________ is an example for differential media.
(a) Blood agar (b) EMB agar
(c) Both (a) and (b) (d) None of the above

7. SøÓ¢u PõØÖ Â¸®¤US Euõµn® :
(A) `÷hõ÷©õÚõì (B) £õêÀ»ì
(C) Gèö\›]¯õ ÷Põø» (D) A÷\õìø£›À»®
An example of micro-aerophilic organism is _________.

(a) Pseudomonas (b) Bacillus
(c) Escherichia coli (d) Azospirillum

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6762 4

8. ¼¨÷£õ£õ¼\õUPøµm G¢ua ö\À _Á›À EÒÍx ?
(A) Qµõ® £õ]miÆ £õUj›¯õ (B) Qµõ® ö|PiÆ £õUj›¯õ
(C) (A) ©ØÖ® (B) (D) £õ]PÒ
Lipopolysaccharide is found in cell wall of __________.
(a) Gram positive bacteria (b) Gram negative bacteria
(c) Both (a) and (b) (d) Algae

9. RÌUPõs£ÁØÖÒ Gx ~sq°ºPøÍU SÊ AÀ»x ÷hUéõÁõP Aø©UP
EuÄQÓx ?
(A) ]ìh÷©iUì (B) ö£¯›k® •øÓ
(C) ÁøP¨£kzxuÀ (D) CÚ® PõquÀ
Which of the following is the arrangement of organism into groups or taxa ?
(a) Systematics (b) Nomenclature
(c) Classification (d) Identification

10. ¤ßÁ¸® TØÖPÎÀ GøÁ \›¯õÚøÁ ?
(i) PhØPøµ°À ‰h¨£mh £Sv°À BØÖ }º, PhÀ }¸hß P»US® £Sv PhÀ
•PzxÁõµ® BS®
(ii) S÷Íõ›÷Úåß Gߣx C¯Ø¤¯À •øÓ
(iii) Gìö\›]¯õ ÷Põø», }º ©õ]øÚ _miUPõmk® ~sq°› BS®
(iv) øímµõ ªPÄ® |a_zußø© Áõ´¢u £õ] BS®
(A) (i) ©ØÖ® (iii) ©mk® (B) (i) ©ØÖ® (ii) ©mk®
(C) (ii) ©ØÖ® (iii) ©mk® (D) (ii) ©ØÖ® (iv) ©mk®
Which of the following statements are true ?
(i) A partly enclosed coastal body of water in which river water mixes with sea
water is called Estuary.
(ii) Chlorination is a physical process.
(iii) Escherichia coli is the water pollution indicator micro-organism.
(iv) Hydra is the most common toxic algal bloom.

(a) (i) and (iii) only (b) (i) and (ii) only
(c) (ii) and (iii) only (d) (ii) and (iv) only

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11. ©s £õ]PÐUS Euõµn® :
(A) Bê»÷hõ›¯õ (B) |õìhõU
(C) AÚõ¤Úõ (D) ÷©ØPõs AøÚzx®
Example for soil algae :
(a) Oscillatoria (b) Nostoc
(c) Anabaena (d) All the above

12. ÷©ÛmhõÀ \ºUPøµ EÒÍ FhP® Gx ?
(A) MHA (B) SDA (C) NA (D) YEMA
Which media contains Mannitol ?
(a) MHA (b) SDA (c) NA (d) YEMA

13. ‰UQß Em¦Ó® __________ \ÆÂÚõÀ `Ǩ£mkÒÍx.
(A) G¨¤w¼¯À (B) _µ¨¦ }º
(C) ÷PõøǨ£h»® (D) GxĪÀø»
The nose is lined with __________ membrane.
(a) Epithelial (b) Secretion
(c) Mucous (d) None of the above

14. uk¨¦ ©¸¢x GßÓ ö\õÀ ¯õµõÀ £øhzx¸ÁõUP¨£mhx ?
(A) ÷Põa (B) öáßÚº (C) öµõU_ (D) £õ´a\º
Who coined the term Vaccine ?
(a) Koch (b) Jenner (c) Roux (d) Pasteur

15. Q›L¤z £›÷\õuøÚUPõP £¯ß£kzu¨£mh ~sq°› :
(A) ìmöµ¨÷hõPõUPì {÷©õÛ÷¯
(B) Gìö\›]¯õ ÷Põø»
(C) ö£ß]¼¯® ö|õm÷hmh®
(D) ìöhø£÷»õPõUPì B›¯ì
The micro-organism used for Griffith experiment :
(a) Streptococcus pneumoniae
(b) Escherichia coli

(c) Pencillium notatum
(d) Staphylococcus aureus

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£Sv & II / PART – II
SÔ¨¦ : GøÁ÷¯Ý® BÖ ÂÚõUPÐUS Âøh¯ÎUPÄ®. ÂÚõ Gs
24 &US Pmhõ¯©õP Âøh¯ÎUPÄ®. 6x2=12
Note : Answer any six questions. Question No. 24 is compulsory.

16. PõU uzxÁ[PÐUS Pmk¨£hõu Cµsk E°›Ú[PÒ ¯õøÁ ?
What are the two organisms that do not obey Koch’s postulates ?

17. \õ¯® – Áøµ¯ÖUPÄ®.
Define stain.

18. Ai¨£øh FhP® GßÓõÀ GßÚ ? GkzxUPõmk u¸P.
State basal media with an example.

19.

Pø\°øÇ ÁøP°ß ö£¯øµ GÊv, Euõµn® u¸P.
Write the name of the type of flagella and give an example.

20. Si}º GßÓõÀ GßÚ ?
What is potable water ?

21. ¤À÷»õ줯º – Áøµ¯ÖUPÄ®.
Define phyllosphere.

22. ^u÷£v ©ØÖ® Á°ØÖ¨÷£õUSUS Cøh÷¯²ÒÍ ÷ÁÖ£õmiøÚU TÖP.
State the difference between dysentry and diarrhoea.

23. C®²÷Úõáß – Áøµ¯ÖUPÄ®.

Define the term ‘Immunogen’.

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24.

(A) öPõkUP¨£mkÒÍ £hzvß ö£¯º GßÚ ?
(B) AuøÚ ÂÍUSP.

(a) Mention the name of the depicted picture.
(b) Explain about it.

£Sv & III / PART – III
SÔ¨¦ : GøÁ÷¯Ý® BÖ ÂÚõUPÐUS Âøh¯ÎUPÄ®. ÂÚõ Gs
33 &US Pmhõ¯©õP Âøh¯ÎUPÄ®. 6x3=18

Note : Answer any six questions. Question No. 33 is compulsory.
25. ©xz öuõÈØ\õø»US ¿°ì £õ´\º BØÔ¯ £[QøÚ ÂÁ›UPÄ®.
Give a list of contribution of Louis Pasteur to wine industry.

26. öÁ¨£ PõØÖ Ak¨¤ß ö\¯À•øÓPøÍ £hzxhß ÂÁ›UPÄ®.
Explain the mechanism of operation in Hot Air Oven with diagram.

27. ~sq°ºPÒ GÆÁõÖ GsoUøP AøÓ ‰»® PnUQh¨£kQÓx ?
How bacterial cells are counted using counting chamber ?

28. Áøµ¯ÖUPÄ® :
(A) £÷¯õÁõº (B) ^÷µõÁõº (C) ©õº÷£õÁõº

Define :
(a) Biovar (b) Serovar (c) Morphovar

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29.

(A) öPõkUP¨£mkÒÍ £h® ÂÍUS® ~sq°ºPÎß öuõhº¤øÚU SÔ¨¤kP.

(B) AuøÚ Euõµnzxhß ÂÁ›UPÄ®.

(a) Mention the name of the microbial interaction in the given figure.

(b) Explain about it with suitable example.

30. (A) ¤.j GßÓõÀ GßÚ ?

(B) ¤.j E°› §a_UöPõÀ¼°ß ö\¯À•øÓø¯ ÂÍUSP.

(a) What is Bt ?

(b) Explain the process of Bt Biopesticide.

31. IgM £s¦PÎÀ H÷uÝ® ‰ßøÓ SÔ¨¤kP.

Mention any three properties of IgM.

32. Á»x£UP ©ØÖ® Chx£UP i.Gß.H. ÁiÁ[PÐUS Cøh÷¯²ÒÍ ÷ÁÖ£õmøh
H÷uÝ® ‰ßÖ •UQ¯ A®\[PÐhß ÂÁ›UPÄ®.

Differentiate between right handed and left handed DNA forms with any three

salient features.

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33.

(A) öPõkUP¨£mkÒÍ £hzvß ö£¯º GßÚ ?

(B) AuøÚ ÂÍUSP.

(a) Name the depicted picture.

(b) Explain about it.

£Sv & IV / PART – IV

SÔ¨¦ : AøÚzx ÂÚõUPÐUS® Âøh¯ÎUPÄ®. 5x5=25

Note : Answer all the questions.

34. (A) ÷|õ´zöuõØøÓ EshõUS® ÷|õ´UPõµoø¯ Aøh¯õÍ® Põn, µõ£ºm
PõU {Ö¯ uzxÁ[PøÍ ÂÁ›UPÄ®.

AÀ»x

(B) íõßì Q›ìi¯ß Qµõ® E¸ÁõUQ¯ \õ¯÷©ØÖ •øÓ°ß £i{ø»PøÍ
£hzxhß ÂÁ›UPÄ®.

(a) Explain the criteria established by Robert Koch to identify the causative
agents of an infectious disease.

OR

(b) Diagrammatically explain the steps involved in the staining technique
developed by Hans Christian Gram.

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6762 10

35. (A) ~sq°º }UP® ©ØÖ® £õì_øµ÷\åß – J¨¥k u¸P.
AÀ»x
(B) ]Ó¨¦z ußø© öPõsh FhP[PÒ H÷uÝ® I¢x £ØÔ Â›ÁõP GÊxP.
(a) Compare sterilization and pasteurization.

OR

(b) Explain any five special purpose media in detail.

36. (A) (i) ÷P¨`À ©ØÖ® ìø»® AkUS – ÷ÁÖ£õk u¸P.
(ii) ø£ø» ©ØÖ® ¤®¤›÷¯ – ÷ÁÖ£õk u¸P.
AÀ»x
(B) (i) P»¨¦ Eµ® GßÓõÀ GßÚ ?
(ii) P»¨¦ Eµ® u¯õ›¨¦ •øÓPøÍ ÂÁ›UPÄ®.
(a) (i) Differentiate between capsule and slime layer.

(ii) Differentiate between pili and fimbriae.

OR

(b) (i) What is composting ?

(ii) Describe the methods of compost preparation.

37. (A) ø|mµáß _ÇØ]°ß ÂøÚPøÍ SÔzx ÂÁ›UPÄ®.
AÀ»x
(B) EÒ|a_US®, öÁÎ|a_US® EÒÍ ÷ÁÖ£õmøh u¸P.
(a) Give in detail the reactions involved in Nitrogen Cycle.

OR

(b) Differentiate - endotoxins and exotoxins.

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38. (A)

(i) öPõkUP¨£mkÒÍ £hzvß ö£¯øµU SÔ¨¤kP.
(ii) öPõkUP¨£mkÒÍ £hzøu Áøµ¢x £õP[PøÍ SÔ¨¤kP.
AÀ»x
(B)

(i) öPõkUP¨£mkÒÍ Áøµ£hzvß ö£¯øµ SÔ¨¤kP.
(ii) Áøµ£hzvÀ EÒÍ 4 {ø»PÎß ö£¯ºPøÍ GÊv ÂÁ›UPÄ®.
(a)

(i) Mention the name of the depicted picture.
(ii) Draw the picture and label the parts.
OR
(b)

(i) Mention the name of the depicted picture.

(ii) Write the name of the four phases and explain in detail.

-o0o-
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