TN 12th Question Paper 2024 Zoology

TN PUBLIC EXAM

QUESTION
PAPER
2024

No. of Printed Pages : 8
7437
£vÄ Gs
A Register Number

!7437Zoology! PART - III
»[Q¯À / ZOOLOGY
( 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 AøÓ PsPõo¨£õÍ›h®
EhÚi¯õP öu›ÂUPÄ®.
(2) }»® AÀ»x P¸¨¦ ø©°øÚ ©mk÷© GÊxÁuØS®
AiU÷PõikÁuØS® £¯ß£kzu ÷Ásk®. £h[PÒ ÁøµÁuØS
ö£ß]À £¯ß£kzuÄ®.

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.

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

(ii) öPõkUP¨£mkÒÍ |õßS ©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.

[ v¸¨¦P / Turn over

7437 2

1. ^®£õ¼À AvP® Põn¨£kÁx :
(A) Ig D (B) Ig E (C) Ig M (D) Ig A
Colostrum is rich in :
(a) Ig D (b) Ig E (c) Ig M (d) Ig A

2. }›ß uµzøu¨ £õvUPõ©À, __________ J¸ ]Ó¢u öuõØÖ }UQ¯õP PÈÄ}º
_zvP›¨¤À £¯ß£kzu¨£kQÓx.
(A) öPõvUP øÁzuÀ (B) ¦Ó Fuõ PvºPÒ
(C) K÷\õß ÷\ºzuÀ (D) S÷Íõ›ß CkuÀ
Without altering water quality, __________ is/are an ideal disinfectant used in waste water
treatment.
(a) Boiling (b) U-V rays
(c) Ozonisation (d) Chlorination

3. AshP®, Ck¨¦a_Áº £Sv²hÝ®, P¸¨ø£²hÝ® J¸ uø\ |õ›ÚõÀ
CønUP¨£mkÒÍx. Azuø\ |õ›ß ö£¯º :
(A) ø©÷¯õö©m›¯® (B) AshP Cøǯ Áø»
(C) «÷\õ÷Á›¯® (D) i³ÛPõ AÀ¦ãÛ¯õ
The ovary remains attached with pelvic wall and the uterus by an ovarian ligament, called :
(a) myometrium (b) ovarian stroma
(c) mesovarium (d) tunica albuginea

4. B ö\ÀPøÍ yskÁx :
(A) Cßhºö£µõß (B) {µ¨¦U TÖPÒ
(C) Gvºö£õ¸Ò ysi (D) Gvºö£õ¸Ò
B cells are activated by :
(a) Interferon (b) Complement
(c) Antigen (d) Antibody

5. yx RNA ‰»UTÖ G®•øÓ°À E¸ÁõUP¨£kQÓx ?
(A) |P»õUP® (B) Cµmi¨£õuÀ
(C) ö©õÈö£¯ºzuÀ (D) £iö¯kzuÀ
A mRNA molecule is produced by :
(a) Duplication (b) Replication
(c) Translation (d) Transcription

A

3 7437

6. ÁͺP¸Âß \µõ\› Cu¯zxi¨¦ Ãu® :
(A) 120 - 160 xi¨¦/{ªh® (B) 120 - 130 xi¨¦/{ªh®
(C) 130 - 150 xi¨¦/{ªh® (D) 130 - 160 xi¨¦/{ªh®
The average foetal heart beat rate is :
(a) 120 - 160 beats/minute (b) 120 - 130 beats/minute
(c) 130 - 150 beats/minute (d) 130 - 160 beats/minute

7. £ÓøÁPÒ ©ØÖ® Ásnzx¨ §a]PÎß CÓUøPPÒ RÌUPsh GuØS
GkzxUPõmkPÍõS® ?
(A) › £›nõ©® (B) ©õÖ£õkPÒ
(C) S £›nõ©® (D) £µÁÀ •øÓ uPÁø©¨¦
The wings of birds and butterflies is an example of :
(a) Divergent evolution (b) Variation
(c) Convergent evolution (d) Adaptive radiation

8. |ÃÚ ©Ûu CÚ® G¢u Põ»zøua ÷\º¢ux ?
(A) SÁõºöhºÚ› (B) ÷P®¨›¯ß
(C) Qµm÷hæ¯ì (D) ø\¿›¯ß
Modern man belongs to which period ?
(a) Quaternary (b) Cambrian
(c) Cretaceous (d) Silurian

9. Ái\õø»PÎÀ GzuÚõÀ EØ£zvUS £¯ß£k® ö£õxÁõÚ uͨö£õ¸Ò :
(A) P¸®£õø»U PÈÄ (B) ÷\õ¯õ ©õÄ
(C) ÷\õÍ ©õÄ (D) {»UPhø»
The most common substrate used in distilleries for the production of ethanol :
(a) Molasses (b) Soyameal
(c) Cornmeal (d) Groundgram

10. GEAC Gߣx :
(A) ©µ¦¨ ö£õÔ°¯À J¨¦uÀ SÊ©®
(B) ã÷Úõ® ö£õÔ°¯À ö\¯À SÊ©®
(C) ©µ¤¯ ©ØÖ® _ØÖa`ÇÀ J¨¦uÀ SÊ©®
(D) {» _ØÖa`ÇÀ ö\¯À SÊ©®
GEAC stands for :
(a) Genetic Engineering Approval Committee
(b) Genome Engineering Action Committee
(c) Genetic and Environment Approval Committee
(d) Ground Environment Action Committee

A [ v¸¨¦P / Turn over

7437 4

11. ÷|õ³UQPÒ ©ØÖ® AøÁPÒ EshõUS® ÷|õ´PøÍ ö£õ¸zv R÷Ç EÒÍ
\›¯õÚ ö£õ¸¢x SÔ±møh ÷uº¢öukUPÄ®.

(A) ½è÷©Û¯õ ÷hõ÷ÚõÁõÛ (i) A«¤¯õ]ì
(B) Ea\Ÿ›¯õ £õßQµõL¨i (ii) Põ»õ&A\õº
(C) i›¨£÷Úõ÷\õ©õ ÷P®¤¯ßì (iii) yUP ¯õv
(D) Gsh«£õ îìhõ¼iPõ (iv) ¯õøÚUPõÀ ÷|õ´

(A) (A)-(iii), (B)-(i), (C)-(ii), (D)-(iv)
(B) (A)-(ii), (B)-(iv), (C)-(iii), (D)-(i)
(C) (A)-(i), (B)-(iv), (C)-(iii), (D)-(ii)
(D) (A)-(ii), (B)-(iv), (C)-(i), (D)-(iii)
Match the pathogens with respective diseases caused by them and select the correct match
using the codes given below :

(A) Leishmania donavani (i) Amoebiasis
(B) Wuchereria bancrofti (ii) Kala-azar
(C) Trypanosoma gambiense (iii) Sleeping sickness
(D) Entamoeba histolytica (iv) Filariasis

(a) (A)-(iii), (B)-(i), (C)-(ii), (D)-(iv)
(b) (A)-(ii), (B)-(iv), (C)-(iii), (D)-(i)
(c) (A)-(i), (B)-(iv), (C)-(iii), (D)-(ii)
(d) (A)-(ii), (B)-(iv), (C)-(i), (D)-(iii)

12. RÌPshÁØÖÒ r-]ØÔÚzxUS Euõµn® :
(A) Põshõª¸P® (B) ©Ûuß
(C) vª[P»® (D) §a]PÒ
Which of the following is an r-species ?
(a) rhinoceros (b) human
(c) whale (d) insects

A

5 7437

13. ©ÛuÛß ABO Cµzu ÁøPPøÍ Pmk¨£kzxÁx :
(A) £õÀ \õº¢u ©µ£qUPÒ (B) £ÀTmk AÀ½ÀPÒ
(C) ÷íõ»õsi›U ãßPÒ (D) öPõÀ¼ ©µ£qUPÒ
ABO blood group in man is controlled by :
(a) Sex linked genes (b) Multiple alleles
(c) Holandric genes (d) Lethal genes

14. AȲ® B£zvÀ EÒÍ E°›Ú[PÎß uPÁÀPøÍa ÷\P›zx, öuõSzx, ]Á¨¦
£mi¯»õP öÁΰk® {ÖÁÚ® :
(A) IUCN (B) WWF (C) UNEP (D) ZSI
The organization which collects, compiles and publishes the red list of threatened species :
(a) IUCN (b) WWF (c) UNEP (d) ZSI

15. GÆÁøP CÚ¨ö£¸UPzvÀ ÷ÁÖ£õkPÒ ÷uõßÖ® ?
(A) £õ¼Ú¨ ö£¸UP® (B) £õ¼¼ CÚ¨ö£¸UP®
(C) PßÛ CÚ¨ö£¸UP® (D) (A) ©ØÖ® (B) Cµsk®
In which mode of reproduction variations are seen ?
(a) Sexual (b) Asexual
(c) Parthenogenesis (d) Both (a) and (b)

£S-v & II / PART - II

SÔ¨¦ : GøÁ÷¯Ý® BÖ ÂÚõU- P - Ð US Âøh- ¯ - Î U- P - Ä ®. ÂÚõ Gs 24 &US
Pm-hõ-¯-©õP Âøh-¯-ÎU-P-Ä®. 6x2=12
Note : Answer any six of the following. Question No. 24 is compulsory.

16. ÷ÁÖ£kzxP : öÁÎP¸ÄÖuÀ ©ØÖ® EmP¸ÄÖuÀ.
Differentiate between external and internal fertilizations.

17. ©Ûu›À £» ¢x ö\À P¸ÄÖuÀ GÆÂu® ukUP¨£kQÓx ?
How is polyspermy avoided in humans ?

18. £õÀÂøÚz öuõØÖ ÷|õ´PøÍz ukUS® •øÓPøÍ GÊxP.
Write the preventive measures of STDs.

A [ v¸¨¦P / Turn over

7437 6

19. ÷íõ»õsi›U ©µ£qUPÒ GßÓõÀ GßÚ ?
What are holandric genes ?

20. ""©µ£q SÔ±k, E»PzvÀ EÒÍ GÀ»õ E°›PÐUS® ö£õxÁõÚx''. & Põµn[PÒ
TÖP.
Give reasons : Genetic code is universal.

21. ø\©õ»â GßÓ ö\õØöÓõhøµ Áøµ¯ÖUPÄ®.
Define the term ‘Zymology’.

22. E°›¯ £ÀÁøPz ußø©°ß ‰ßÖ {ø»PÒ ¯õøÁ ?
What are the three levels of biodiversity ?

23. ©soß ÷uõØÓ® GßÓõÀ GßÚ ?
What is Pedogenesis ?

24. ¸®¤¯ £s¦PøÍ öPõsh »[SPøÍ G¢u |ÃÚ E°› öuõÈÀ~m£zøu
£¯ß£kzv E¸ÁõUP»õ® ? GkzxUPõmk u¸P.
How will you get desired traits in animals by using modern biotechnology ? Give examples.

£S-v & III / PART - III

SÔ¨¦ : GøÁ÷¯Ý® BÖ ÂÚõU- P - Ð US Âøh- ¯ - Î U- P - Ä ®. ÂÚõ Gs 33 &US
Pm-hõ-¯-©õP Âøh-¯-ÎU-P-Ä®. 6x3=18
Note : Answer any six of the following. Question No. 33 is compulsory.

25. PßÛ CÚ¨ö£¸UP® GßÓõÀ GßÚ ? Auß ÁøPPÒ ¯õøÁ ?
What is parthenogenesis ? What are its types ?

26. ìö£ºª÷¯õöáÛ]ì ©ØÖ® ìö£º©m÷hõöáÛ]ì ÷ÁÖ£kzxP.
Mention the differences between spermiogenesis and spermatogenesis.

27. £ÛUShz xøͨ¦ GßÓõÀ GßÚ ? CzöuõÈÀ~m£zvØS \mh£i¯õÚ uøh
Âv¨£x Hß ?
What is amniocentesis ? Why do a statutory ban is imposed on this technique ?

A

7 7437

28. »õ©õºUQß ö£Ó¨£mh £s¦U ÷Põm£õmiøÚ uÁöÓÚ {¹¤zuÁº ¯õº ?
GÆÁõÖ {¹¤zuõº ?
Who disproved Lamarck’s theory of Acquired characters ? How ?

29. ÷©À§a\õUP®, ÂÊ[S ö\ÀPÎß ö\¯»õUPzvÀ Hß vÓß Áõ´¢uuõP
P¸u¨£kQÓx ?
Why is opsonisation efficient in phagocytosis ?

30. Qµõ©¨¦Ó £SvPÎÀ E°›¯ Áõ² EØ£zv {ø»¯[PÎß £¯ßPøÍ TÖP.
List the advantages of biogas plants in rural areas.

31. ©µ¤¯À¦ ©õØÓ¨£mh E°›Ú[PÍõÀ ÷|›hUTi¯ B£zxUPÒ ¯õøÁ ?
What are the possible risks of GMOs ?

32. ÷£õøu ©¸¢xPÒ ©ØÖ® ©x¨ £ÇUPzv¼¸¢x »S®÷£õx HØ£k® »PÀ
AÔSÔPøÍ GÊxP.
Write the common withdrawal symptoms of drugs and alcohol abuse.

33. ö£ºU©õÛß Âvø¯ Áøµ¯ÖUPÄ®.
Define ‘Bergmenn’s rule’.

£S-v & IV / PART - IV
SÔ¨¦ : AøÚz-x ÂÚõU-P-ÐU-S® Âøh-¯-ÎU-P-Ä®. 5x5=25
Note : Answer all the questions.

34. (A) E°›PÎÀ Põn¨£k® £À÷ÁÖ ÁøP¯õÚ J¸[QønÄ •øÓPøÍ
ÂÍUSP.
AÀ-»-x
(B) ö\¯»õUP ©ØÖ® ©¢u©õÚ ÷|õ´uøhU Põ¨¦PÐUQøh÷¯¯õÚ
÷ÁÖ£õkPøÍ GÊxP.
(a) Explain the different kinds of syngamy in living organisms.
OR
(b) Write the differences between active and passive immunity.

35. (A) DNA ÷µøP Aa]hÀ öuõÈÀ~m£zvß £¯ß£õkPøÍ ÂÍUSP.
AÀ-»-x
(B) hõºÂÛ¯U ÷Põm£õmiß •UQ¯ Gvº P¸zxUPÒ ¯õøÁ ?
(a) Explain the applications of DNA fingerprinting techniques.
OR
(b) Mention the main objections to Darwinism.

A [ v¸¨¦P / Turn over

7437 8

36. (A) }›ß •UQ¯ £s¦PÒ ¯õøÁ ?
AÀ-»-x
(B) £À÷ÁÖ ©õuÂhõ´U SøÓ£õkøͨ £mi¯¼kP.
(a) What are the various essential properties of water ?
OR
(b) List the various menstrual disorders.

37. (A) ~sq°›¯ G›ö£õ¸Ò P»ß GßÓõÀ GßÚ ? ÂÍUSP.
AÀ-»-x
(B) ©Ö÷\ºUøP Cß_¼ß GÆÁõÖ EØ£zv ö\´¯¨£kQÓx Gߣøu ÂÍUSP.
(a) What is Microbial Fuel Cell ? Explain.
OR
(b) Explain how recombinant insulin can be produced.

38. (A) Pv›¯UP PÈÄPøÍ APØÖ® •øÓPøÍ ÂÍUSP.
AÀ-»-x
(B) E°›¯ £ÀÁøPzußø©°ß CǨ¤ØPõÚ £À÷ÁÖ Põµn[PøÍ £mi¯¼kP.
(a) Explain the methods of disposal of radioactive wastes.
OR
(b) List out the various causes for biodiversity losses.

-oOo-

A

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