TN 12th Model Question Paper Zoology

A A

No. of Printed Pages : 11
1337 (NP)
£vÄ Gs
A Register Number

!1337NPZoology! PART - III
»[Q¯À / ZOOLOGY
( uªÌ ©ØÖ® B[Q» ÁÈ / Tamil & English Version )

Põ» AÍÄ : 2.30 ©o ÷|µ® ] [ ö©õzu ©v¨ö£sPÒ : 70
Time Allowed : 2.30 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 ©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

A A

A A

1337 (NP) 2

1. "£›nõ©a ö\¯Ø£õ[S' GÝ® ¡ø» öÁΰmhÁº :
(A) íõºi Ãßö£ºU (B) ï÷Põ i öÁ›ì
(C) öhõ¨\õßìQ (D) â.GÀ. ìöh¤ßì
The book ‘Process of organic evolution’ was written by :
(a) Hardy - Weinberg (b) Hugo de Vries
(c) Dobzhansky (d) G.L. Stebbins

2. ÁΩsh»zvÀ EÒÍ PõØøÓ ÷|›øh¯õPa _Áõ]US® vÓß ö£ØÓ E°º
«ßPÒ __________.
(A) Põº¨¦PÒ (B) £õÀ «ßPÒ
(C) •µÀPÒ (D) §øÚ «ßPÒ
The fishes which are capable of directly breathing atmospheric air __________.
(a) carps (b) milk fishes
(c) murrels (d) catfishes

3. Áõ°À •møhPøÍ øÁzx AøhPõUS® öÁÎ|õmk «ß ÁøP __________.
(A) v»õ¨¤¯õ (B) ÷»mhì (C) Pm»õ (D) •QÀ
The exotic fish which exhibits buccal incubation is __________.
(a) Tilapia (b) Lates (c) Catla (d) Mugil

4. øhø|m÷µõL¥ÚõÀ Gߣx :
(A) J¸ Bsi£õi
(B) J¸ ÷Áv¯z öuõS¨¦, C®³÷ÚõöáÝhß ÂøÚ¦›QÓx
(C) J¸ Bßiáß
(D) J¸ C®³÷Úõáß AÀ» BÚõÀ HØPÚ÷Á EshõUP¨£mh
Bsi£õiPÐhß ÂøÚ¦›²®
Dinitrophenol is :
(a) an antibody
(b) a chemical group reacts with immunogen
(c) an antigen
(d) not an immunogen but reacts with pre-formed antibodies

A

A A

A A

3 1337 (NP)

5. R÷Ç öPõkUP¨£mhøÁPÎÀ \›¯õP¨ ö£õ¸¢uõu Cøn Gx ?
(A) »õª÷Ú›¯õ & £Ê¨¦¨ £õ] BÀPõ
(B) Gßmi÷µõ©õºL£õ & £aø\ £õ] BÀPõ
(C) Q÷µ]÷»›¯õ & ]Á¨¦¨ £õ] BÀPõ
(D) ÷£õºLø£µõ & }» £aø\ £õ] BÀPõ
Which one of the following is not a correct pair ?
(a) Laminaria - Brown algae
(b) Enteromorpha - Green algae
(c) Gracillaria - Red algae
(d) Porphyra - Blue green algae

6. uøhPõ¨ø£ ©mk¨£kzx® ©¸¢vß GkzxUPõmk __________.
(A) H¢z÷µõø©]ß (B) ø\U÷Íõì÷£õ›ß
(C) Cªh÷\õÀ (D) B©ßmiiß
An example for immunosuppressive drug is __________.
(a) Anthromycin (b) Cyclosporin
(c) Imidazole (d) Amantidine

7. PõÀPÎÀ xi¨¤ßø© __________ ÷|õ°ß AÔSÔ¯õP ÷uõßÓ»õ®.
(A) Cµzu ¦Ó EhØ_ÇØ]
(B) Cu¯zu©Û ÷|õ´
(C) Cu¯U SøÓ£õk
(D) Cu¯a ö\¯¼Ç¨¦
Weak pulse in leg is a sign of __________.
(a) peripheral vascular disease
(b) coronary artery disease
(c) heart disorder
(d) heart failure

A [ v¸¨¦P / Turn over

A A

A A

1337 (NP) 4

8. J¸ ï÷©õS÷Íõ¤ß ‰»UTÖ __________ \[Q¼PÍõÀ BÚx.

(A) 2 BÀ£õ ©ØÖ® 1 ¥mhõ (B) 1 BÀ£õ ©ØÖ® 2 ¥mhõ

(C) 2 BÀ£õ ©ØÖ® 2 ¥mhõ (D) 1 BÀ£õ ©ØÖ® 1 ¥mhõ

Each haemoglobin molecule consists of __________.

(a) 2 alpha and 1 beta chain (b) 1 alpha and 2 beta chains

(c) 2 alpha and 2 beta chains (d) 1 alpha and 1 beta chain

9. Ga.I.Â. __________ GßÓ xønU Sk®£zøua \õº¢u J¸ ÁøP¯õS®.

(A) ÷µ¨÷hõ øÁµì (B) ö£Û]¼¯õ

(C) ÁõU]Û¯õ (D) ö»ßmiøÁ›÷Ú

HIV is a member of the sub-family __________.

(a) Rhabdovirus (b) Pencillia

(c) Vaccinia (d) Lentivirinae

10. öÁ¨£UPõkPÎÀ ©µ[PÎß ©Pµ¢ua ÷\ºUøPUS •UQ¯©õP¨ £¯ß£kÁx
__________.

(A) øµ÷Úõ]µõì ÁskPÒ (B) £õk® £ÓøÁPÒ

(C) ªªU ÂmiÀPÒ (D) BºQm ÷uÜUPÒ

Which organism plays a vital role in pollination of trees in tropical forest ?

(a) Rhinoceros beetle (b) Humming birds

(c) Mimic moths (d) Orchid bees

A

A A

A A

5 1337 (NP)

11. ö£õ¸zxP.
(1) Asi[Uhß öPõ›¯õ (i) EhÀ S÷µõ÷©õ÷\õªß vjº ©õØÓ ãß
(2) Pvº A›ÁõÒ ÷\õøP (ii) ÷íõ÷©õø\Pì Jk[S ãß
(3) GPõ©õS÷Íõ¦¼Ûª¯õ (iii) EhÀ S÷µõ÷©õ÷\õªß J[S ãß
(4) u»õ^ª¯õ (iv) Jk[S ãß
(A) (1) - (i) (2) - (iv) (3) - (iii) (4) - (ii)

(B) (1) - (ii) (2) - (iv) (3) - (i) (4) - (iii)

(C) (1) - (iii) (2) - (i) (3) - (iv) (4) - (ii)

(D) (1) - (iii) (2) - (i) (3) - (ii) (4) - (iv)

Match the following :

(1) Huntington’s chorea (i) Autosomal mutant allele
(2) Sickle cell anemia (ii) Homozygous recessive gene
(3) Agammaglobulinemia (iii) Autosomal dominant gene
(4) Thalassemia (iv) Recessive gene
(a) (1) - (i) (2) - (iv) (3) - (iii) (4) - (ii)
(b) (1) - (ii) (2) - (iv) (3) - (i) (4) - (iii)
(c) (1) - (iii) (2) - (i) (3) - (iv) (4) - (ii)
(d) (1) - (iii) (2) - (i) (3) - (ii) (4) - (iv)

12. E¸øͨ¦ÊÂß •uÀ ÷uõ¾›uÀ ÂøÍÁõP Á¸® »õºÁõÂß ö£¯º
__________.

(A) öíUéõPõ¢z (B) ]ìiö\ºPì
(C) µõ¨imi »õºÁõ (D) B[÷Põ줯º
The first moult of Ascaris larva results in __________ larva.

(a) Hexacanth (b) Cysticercus
(c) Rhabditi form (d) Onchosphere

A [ v¸¨¦P / Turn over

A A

A A

1337 (NP) 6

13. TØÖ (A) : |® |õmiÀ, Sκ Põ»[PÎÀ ¦xvÀ¼°À ÁõÊ® ©UPÒ
u[PÒ ÃkPÎÀ PõØÖ ÁiPmiø¯ £¯ß£kzxQßÓÚº.
Põµn® (R) : AvP AÍÂÀ £iP G›ö£õ¸øÍ £¯ß£kzxÁuß
ÂøÍÁõP AvP AÍÂÀ øím÷µõPõº£ßPÒ öÁΰh¨&
£kQßÓÚ.
(A) (A) &\›, ©ØÖ® (R) &\›; (R) & (A) &ø¯ ÂÍUSQÓx
(B) (A) &uÁÖ BÚõÀ (R) &\›
(C) (A) &\› ©ØÖ® (R) &uÁÖ
(D) (A) &\› ©ØÖ® (R) &\› BÚõÀ (R) & (A) &ø¯ \›¯õP ÂÍUPÂÀø»
Assertion (A) : In our country, during winter, most of the people living in New Delhi
use air filter in their homes.
Reason (R) : Excessive use of fossil fuel, which results in emission of hydrocarbons.
(a) (A) is correct and (R) is also correct; (R) explains (A).
(b) (A) is wrong but (R) is correct.
(c) (A) is correct and (R) is wrong.
(d) (A) is correct and (R) is also correct but (R) does not explain (A).

14. öÁßm›UQÎß ªßÚõØÓÀ «ÒøÁU SÔUS® D.].â. Aø» __________.
(A) Q Aø» (B) T Aø»
(C) P Aø» (D) Q, R, S Aø»PÒ
The ECG wave due to ventricular repolarization is __________.
(a) Q wave (b) T wave
(c) P wave (d) Q, R, S waves

15. Rm÷hõöáÛêì ö\¯¾USU Põµn® :
(A) AvP AÍ»õÚ SÐU÷Põì BUêPµn®
(B) AvP AÍ»õÚ ¦µu® EØ£zv¯õuÀ
(C) AvP AÍ»õÚ öPõʨ¦ BUêPµn®
(D) SøÓ¢u AÍ»õÚ öPõʨ¦ BUêPµn®
The reason for the ketogenesis is :
(a) Increased glucose catabolism
(b) Increased protein anabolism
(c) Increased fat catabolism
(d) Decreased fat catabolism

A

A A

A A

7 1337 (NP)

£Sv & II / PART - II

SÔ¨¦ : (i) GøÁ÷¯Ý® BÖ ÂÚõUPÐUS Âøh¯ÎUPÄ®. 6x2=12

(ii) ÂÚõ Gs 24 &US Âøh¯Î¨£x Pmhõ¯©õS®.
Note : (i) Answer any six of the following.
(ii) Question No. 24 is compulsory.

16. J¸ ©Ûuß J¸ ø©À öuõø»ÂØS |hUQÓõß. A¨÷£õx J¸ •Ò AÁß
Põ¼À SzxQÓx, Eh÷Ú AÁß SÛQÓõß. A÷u \©¯® AÁß Eh¼ß
•xS¨ £Sv°À ö£õÔumiÚõÀ ÷£õÀ J¸ Á¼ HØ£kQÓx. Cx, Eh¼ß
¤ß £Sv uø\PÎÀ vjöµÚ HØ£mh ©õØÓ®. CuøÚ ÂÍUSP.
A man is walking for a mile. A thorn pricks his leg so suddenly he bows down. At that
time he gets sudden sparking pain at his back. This is due to sudden change in the
position of back body muscles. Explain it.

17. `›¯ BØÓ¼ß {øÓPÒ H÷uÝ® CµsøhU TÖP.
Mention any two advantages of solar energy.

18. ÷ÁÖ£kzxP : ÷ÁØÔh ]ØÔÚ[PÒ ©ØÖ® K›ha ]ØÔÚ[PÒ.
Differentiate allopatric and sympatric species.

19. Tmk «ß Áͺ¨¤À öPõsi¸UP ÷Ási¯ ªP AÁ]¯©õÚ £s¦ ¯õx ?
Which character is very essential for cultivable fishes in polyculture ?

20. ©ØÓ {Ç¾Ö öuõÈÀ~m£[PøÍ J¨¤k®÷£õx CT &°ß ÷©ßø©¯õÚ
£¯ß£õkPÒ ¯õøÁ ?
What are the advantages of CT over other imaging techniques ?

21. E¸øͨ¦ÊÂß ÁõÌUøP _ÇØ]°À öÁÎ{ø» GßÓõÀ GßÚ ?
What is exogenous phase in the lifecycle of Ascaris ?

A [ v¸¨¦P / Turn over

A A

A A

1337 (NP) 8

22. C®²÷Úõ S÷Íõ¦¼ß Aø©¨¤ß £h® Áøµ¢x £õP[PøÍU SÔ¨¤kP.
Draw a labelled diagram of immunoglobulin.

23. E°› uPÁ¼¯À £¯ß£kzu¨£kQßÓ xøÓPøÍ ö£¯›kP.
Name the various fields in which the science of bioinformatics is applied.

24. öÁS ÂøµÂÀ, |©x |õk E»Q÷»÷¯ AvP ©UPÒöuõøP Eøh¯ |õhõP
©õÓ¨ ÷£õQÓx. ©UPÒ öuõøP°ß C¢u Awu Áͺa], EnÄ EØ£zvø¯¨
ö£¸UP ¦x¨ £SvPøÍU PshÔ¯ AÊzu® öPõkUQÓx. CMFRI, \x¨¦
{»¨£SvPøÍ, }º E°› Áͺ¨¦ £SvPÍõP ©õØÖÁuØS B÷»õ\øÚ
ÁÇ[Q²ÒÍx. AÆÁõÖ ©õØÔÚõÀ GÆÁõÓõÚ `Èh ©ØÖ® ö£õxa
_Põuõµ £õv¨¦PøÍ |õ® \¢vUP ÷|›k® ?
Very soon our country will be the world’s highest populous country. This alarming
rise in population forces us to find new areas for food production. CMFRI suggested
the conversion of mangrove forests into aquacultural areas. If so, what will be the
environmental and health problems we will be facing ?

£Sv & III / PART - III

SÔ¨¦ : (i) GøÁ÷¯Ý® BÖ ÂÚõUPÐUS Âøh¯ÎUPÄ®. 6x3=18

(ii) ÂÚõ Gs 33 &US Âøh¯Î¨£x Pmhõ¯©õS®.
Note : (i) Answer any six of the following.

(ii) Question No. 33 is compulsory.

25. ©µ¦ ©õØÓ¨£mh »[SPÎß £¯ß£õkPÒ ¯õøÁ ?
What are the uses of transgenic animals ?

26. ©õìm ö\ÀPÒ ]øuÄÖ® ÷£õx öÁÎ÷¯ØÓ¨£k® ÷Áv¯ \ªUøb¨
ö£õ¸ÒPÒ ¯õøÁ ?
Name the chemical alarm signals released by damaged mast cells.

A

A A

A A

9 1337 (NP)

27. «ß Áͺ¨¦U SÍzvÀ J롧 £[S GßÚ ?
How does light influence in pond fish culture ?

28. ªøP¯õÚ Ai¨£øh Áͺ]øu ©õØÓzvÚõÀ HØ£k® ÷|õ°ß ö£¯º
©ØÖ® AÔSÔPøÍ ÂÁ›.
Mention the name and symptoms of the disease characterised by increased BMR.

29. ‰øÍz uskÁhz vµÁzvß £oPÒ ¯õøÁ ?
What are the functions of cerebro spinal fluid ?

30. EsnUTi¯ ]¨¤ J¸ \zuõÚ CøÓa] EnÁõS® & {¯õ¯¨£kzxP.
Oyster meat is nutritious - Justify.

31. DNA ¡»P® GßÓõÀ GßÚ ?

What is DNA library ?

32. |ÃÚ ~sq°›¯À E¸ÁõP ÷áõ\¨ ¼ìhº E¸ÁõUQ¯ ö\´•øÓø¯
ÂÍUSP.
Which technique did Joseph Lister develop in modern microbiology ? Explain.

33. AvP GsoUøP°»õÚ AøÓ SιmiPÒ ©ØÖ® Sκ \õuÚ¨
ö£miPøÍ £¯ß£kzxÁuõÀ _Áõ\ ÷|õ´PÒ HØ£hU Põµn©õQßÓx.
CUTØøÓ AÔ¯À AÔħºÁ©õP ÂÍUSP.
Usage of large number of air conditioner and refrigerators can cause respiratory
ailments. Explain this statement logically.

A [ v¸¨¦P / Turn over

A A

A A

1337 (NP) 10

£Sv & IV / PART - IV
SÔ¨¦ : AøÚzx ÂÚõUPÐUS® Âøh¯ÎUPÄ®. 5x5=25
Note : Answer all questions.
34. (A) |õ®, BØÓø» ö£ÖÁuØPõP EnøÁ EmöPõÒQ÷Óõ®. C¢u BØÓÀ
|® EhÀ Áͺa]US®, ö\¯À£õmiØS® £¯ß£kQÓx. ö\›zu¾US®
ö\ÀPÎÀ BØÓÀ EØ£zvUS® Cøh÷¯¯õÚ ö\¯À •øÓPøÍ
ÂÍUSP.
AÀ»x
(B) Cµzu®, CµzuU SǼÝÒ C¸US® ÷£õx Auß vµÁzußø©ø¯
£µõ©›UP ÷Ásk®. A÷u Cµzu® |® Ehø» Âmk öÁÎÁ¸® ÷£õx
Ax EøÓuÀ Aøh¯ ÷Ásk®. C¢u C¸ {ø»PЮ
£µõ©›UP¨£hõÂmhõÀ, |® Eh¼À £» A\õuõµõn {ø»PÒ
÷uõßÖ®. A¢u A\õuõµn {ø»PøÍ ÂÍUSP.
(a) We consume food for energy. The energy is used for physical growth and
activities. Explain the processes present between digestion and energy formation
at cells.
OR
(b) When the blood is present in the blood vessel, its fluidity must be maintained.
When the blood comes out of the body, it should get clotted. When these two
conditions are not maintained many abnormalities would occur in our body.
Explain those abnormalities.

35. (A) E»PÍõ¯ öÁ¨£ E¯ºÂÚõÀ £°ºPξ®, ©ÛuÛ¾® HØ£k®
ÂøÍÄPÒ ¯õøÁ ?
AÀ»x
(B) GøÁ÷¯Ý® I¢x |ßܺ A»[Põµ «ßPøÍ £ØÔ ÂÁ›UPÄ®.
(a) Give the effects of global warming on plants and animals.
OR
(b) Describe the characters of any five freshwater ornamental fishes.

36. (A) hõ¼ GßÓ ö\®©Ô BmkUSmi ÷uõßÔ¯ ö\¯À•øÓ ÂÍUPzøu
u¸P.
AÀ»x
(B) E»P _Põuõµ Aø©¨¤ß (WHO) £i, Áøµ¯ÖUP¨£mh G´mì ÷|õ°ß
AÔSÔPÒ ¯õøÁ ?
(a) Illustrate the mechanism by which Dolly, the sheep was born.
OR
(b) List down the symptoms of AIDS as defined by WHO.

A

A A

A A

11 1337 (NP)

37. (A) PõÀ|øh°À GÎvÀ £» ÁÈPÎÀ £µÁUTi¯ ÷|õ´PøÍ £mi¯¼kP.
AÀ»x
(B) |® |õk, E°›¯ ªS ÁÍ® öPõsh |õkPÎÀ JßÖ. öuõÈÀ©¯©õUPÀ
Põµn©õP, |õ® PõkPøÍ AÈUQ÷Óõ®. Cx ªP ÷©õ\©õÚ
ÂøÍÄPøÍ HØ£kzu»õ®. Hß, |õ® E°›¯ ªS ÁÍ[PøÍ £õxPõUP
÷Ásk® ? AÆÁõÖ £µõ©›UP |õ® ÷©ØöPõÒÍ ÷Ási¯ vmh[PÒ
¯õøÁ ?
(a) Tabulate the diseases which are spread easily in cattle.
OR
(b) Our country is one of the richest biodiversity countries. Due to industrialisation
we destroy forests. It may lead to very serious consequences. Why should we
conserve biodiversity ? What are the strategies we can adopt ?

38. (A) ¸¢÷uõ®¤ (QµõL¨m v_ ö£ØÓÁº) Eh¼À QµõL¨m CÓ¢x
öÁÎ÷¯ØÓ¨£kQÓx GßÖ J¸ ©¸zxÁº GÆÁõÖ PshÔÁõº ?
AÀ»x
(B) ÷uÜ J¸ \‰P Aø©¨¦øh¯x. J¸ ÷uß TmiÀ ‰ßÖ \õvPÒ
EÒÍÚ. AøÁ JßøÓö¯õßÖ \õº¢v¸UQßÓÚ. ÷uÜUPÎß ÁõÌUøP
_ÇØ] ‰»©õP AøÁPÒ JßøÓö¯õßÖ GÆÁõÖ \õº¢xÒÍÚ Gߣøu
ÂÍUSP.
(a) How will a doctor identify that the host body has rejected a graft ?
OR
(b) Honey bee is a social insect. There are three castes present in a hive. They depend
on each other. By means of life cycle explain their dependence on each other.

-o0o-

A [ v¸¨¦P / Turn over

A A

.