TN 11th Question Paper 2023 Zoology

Tamil Nadu
State Board

2023
QUESTION
PAPER

No. of Printed Pages : 11
6737
£vÄ Gs
A Register Number

!6737IstYearZoology!
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 ©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

6737 2

1. ¤ßÁ¸ÁÚÁØÖÒ Cµzu® EøÓu¼À £[÷PØPõux Gx ?

(A) Cµzuz umkPÒ (B) Lø£¨›ß

(C) ¤¼¸¤ß (D) PõÀ]¯®

Which of the following is not involved in blood clotting ?

(a) Platelets (b) Fibrin

(c) Bilirubin (d) Calcium

2. A÷¯õiß P»¢u E¨¦ __________ I ukzu¼À •UQ¯¨ £[PõØÖQÓx.

(A) Põ´hº (B) ›UöPmì (C) AU÷µõö©P¼ (D) ìPºÂ

Iodised salt is essential to prevent :

(a) Goitre (b) Rickets (c) Acromegaly (d) Scurvy

3. ]Ö}º AhºÄ ö|L¨µõÛß G¨£Svø¯a \õº¢xÒÍx ?

(A) Asø© _¸Ò ~sSÇÀ

(B) ö£Í©õÛß Qsn®

(C) QÍõ©¸»ê¼¸¢x ÷uõßÖ® Cµzu ~s|õÍz öuõS¨¦

(D) öíß÷» ÁøÍÂß }Í®

Concentration of urine depends upon __________ part of the nephron.

(a) P.C.T (Proximal Convoluted Tubule)

(b) Bowman’s Capsule

(c) Network of blood capillaries arising from glomerulus

(d) Long of Henle’s loop

A

3 6737

4. C¯À£õÚ Cµzu \ºUPøµ°ß AÍÄ :

(A) 70 - 110 ª.Q/öh.¼ (B) 70 - 100 ª.Q/öh.¼

(C) 110 - 140 ª.Q/öh.¼ (D) 80 - 120 ª.Q/öh.¼

Normal Glucose values in blood :

(a) 70 - 110 mg/dL (b) 70 - 100 mg/dL

(c) 110 - 140 mg/dL (d) 80 - 120 mg/dL

5. uÁøÍ°ß ]Ö}µP® :

(A) «÷\õö|L¨µõì (B) BºUQö|L¨µõì

(C) ö©mhõö|L¨µõì (D) ¦÷µõö|L¨µõì

Kidney of frog is :

(a) Mesonephros (b) Archinephros

(c) Metanephros (d) Pronephros

6. ÷uÜ Áͺ¨¦ __________ GÚ AøÇUP¨£kQÓx.

(A) öÁºªPÀ\º (B) ö\›PÀ\º

(C) H¨¤PÀa\º (D) ÷»U PÀ\º

Rearing of honey bee is called :

(a) Vermiculture (b) Sericulture

(c) Apiculture (d) Lac culture

A [ v¸¨¦P / Turn over

6737 4

7. yUP® ©ØÖ® ÂȨ¦ _ÇØ]ø¯U Pmk¨£kzx® íõº÷©õß :
(A) Cß_¼ß (B) ADH
(C) øuµõU]ß (D) ö©»m÷hõÛß
The hormone which regulates sleep and wake cycle is :
(a) Insulin (b) ADH
(c) Thyroxine (d) Melatonin

8. {ö©m÷hõkPÎÀ Põn¨£k® PÈÄ }UP EÖ¨¦ :
(A) öµßöÚm ö\ÀPÒ (B) ]Ö}µP®
(C) _hº ö\ÀPÒ (D) ©õÀ¥ã¯ß SÇÀPÒ
The excretory organ of Nematodes :
(a) Rennette cells (b) Kidney
(c) Flame cells (d) Malphighian tubules

9. ö£õ¸zxP :
(1) ø£»õ (i) ÷£´ «ß
(2) ö\¨¤¯õ (ii) ìS°m
(3) »õ¼÷Põ (iii) B¨¤Ò |zøu
(4) BU÷hõ£ì (iv) PnÁõ´ «ß
(A) (1)-(ii), (2)-(iv), (3)-(i), (4)-(iii)
(B) (1)-(ii), (2)-(i), (3)-(iii), (4)-(iv)
(C) (1)-(i), (2)-(ii), (3)-(iii), (4)-(iv)
(D) (1)-(iii), (2)-(iv), (3)-(ii), (4)-(i)
Match the following :
(1) Pila (i) Devil fish
(2) Sepia (ii) Squid
(3) Loligo (iii) Apple snail
(4) Octopus (iv) Cuttle fish
(a) (1)-(ii), (2)-(iv), (3)-(i), (4)-(iii)
(b) (1)-(ii), (2)-(i), (3)-(iii), (4)-(iv)
(c) (1)-(i), (2)-(ii), (3)-(iii), (4)-(iv)

(d) (1)-(iii), (2)-(iv), (3)-(ii), (4)-(i)

A

5 6737

10. PCR öuõÈÀ ~m£zvÀ £¯ß£kzu¨£k® DNA &£õ¼÷©÷µì ö|õv¯õÚx
•u¼À __________ £õUj›¯õ¼¸¢x ¤›zöukUP¨£mhx.

(A) \õÀ÷©õÚÀ»õ (B) öuº©ì AUSÁõiPì

(C) ø©÷Põ£õUj›¯® (D) G. ÷Põø»

The DNA polymerase enzyme used in PCR technique was first isolated from
__________ bacteria.

(a) Salmonella (b) Thermus aquaticus

(c) Mycobacterium (d) E. coli

11. öPõʨ¦ ö\›©õÚzvß •uÀ £i :

(A) »õUjÀPÒ ÁÈ÷¯ EmQµQzuÀ

(B) £õÀ©©õuÀ

(C) Ai÷£õì v_UPÎÀ ÷\ª¨¦

(D) ö|õv ö\¯À£õk

First step in digestion of fat is :

(a) Absorption by lacteals

(b) Emulsification

(c) Storage in adipose tissue

(d) Enzyme action

A [ v¸¨¦P / Turn over

6737 6

12. §a]PÎß _Áõ\ EÖ¨¦PÒ :

(A) £aø\ _µ¨¤PÒ (B) ‰a_U SÇÀPÒ

(C) ~øµ±µÀPÒ (D) ÷uõÀ

The respiratory organs of insects are :

(a) Green glands (b) Tracheal tubes

(c) Lungs (d) Skin

13. SÖCøÇ öPõsh G¤w¼¯® Põn¨£k® Ch® :

(A) ¤zu¨ø£ (B) ÷uõÀ

(C) ‰a_USÇÀ (D) ö\›¨¦¨ £õøu

The ciliated epithelium lines the :

(a) Gall bladder (b) Skin

(c) Trachea (d) Digestive tract

14. _Áõ\ ø©¯® Põn¨£kªh® :

(A) ]Ö‰øÍ (B) •SÍ®

(C) u»õ©ì (D) øí¨÷£õu»õ©ì

The respiratory centre is present in the :

(a) Cerebellum (b) Medulla Oblongata

(c) Thalamus (d) Hypothalamus

A

7 6737

15. uø\ |õºPÎß ö\¯À A»S :

(A) ø©÷¯õ]ß (B) \õº÷Põª¯º

(C) BUiß (D) \õº÷Põ¤Íõ\®
The functional unit of a muscle fibre is :

(a) Myosin (b) Sarcomere

(c) Actin (d) Sarcoplasm

£Sv & II / PART - II

SÔ¨¦ : GøÁ÷¯Ý® BÖ ÂÚõUPÐUS ©mk® Âøh¯ÎUPÄ®. ÂÚõ Gs
24 &US Pmhõ¯©õP Âøh¯ÎUPÄ®. 6x2=12

Note : Answer any six questions. Question No. 24 is Compulsory.

16. »[S Põm]a \õø»US® ÁÚ Â»[S \µnõ»¯zvØS® EÒÍ ÷ÁÖ£õkPÒ
¯õøÁ ?
What are the differences between a zoo and a wild-life sanctuary ?

17. _hº ö\ÀPÒ GßÓõÀ GßÚ ?
What are flame cells ?

18. J¸ ÷£ì÷©UPº GßÚ ö\´QÓx ?
What does a pacemaker do ?

19. "|õ[TÌ PmiPÒ' Gߣx GßÚ ?

What are earthworm casts ?

A [ v¸¨¦P / Turn over

6737 8

20. ö©mï÷©õS÷Íõ¤ß GßÓõÀ GßÚ ?
What is Methaemoglobin ?

21. G¾®¦z uø\PξÒÍ _¸[S ¦µu[PÎß ö£¯ºPøÍ GÊxP.
Name the contractile proteins present in the skeletal muscle.

22. S¸mk¨ ¦ÒÎ GÚ¨£kÁx Gx ? Hß AÆÁõÖ AøÇUP¨£kQÓx ?
What is called blind spot ? Why is it called so ?

23. Q›iÛ\zvß AÔSÔPøÍU SÔ¨¤kP.
Write the symptoms of cretinism.

24. £¯õ¨], Bmhõ¨] – ÷ÁÖ£kzxP.
Differentiate Biopsy and Autopsy.

£Sv & III / PART - III

SÔ¨¦ : GøÁ÷¯Ý® BÖ ÂÚõUPÐUS ©mk® Âøh¯ÎUPÄ®. ÂÚõ Gs
33 &US Pmhõ¯©õP Âøh¯ÎUPÄ®. 6x3=18

Note : Answer any six questions. Question No. 33 is Compulsory.

25. ö£¯›kÁuØPõÚ Ai¨£øh ÂvPøÍ GÊxP.
Write the rules of Nomenclature.

26. •xS|õqøh¯øÁ, •xS|õnØÓøÁ – ÷ÁÖ£kzxP.

Differentiate Chordates and Non-Chordates.

A

9 6737

27. uÁøÍ°À Põq® _Áõ\ •øÓPøͨ ö£¯›kP.

Write the types of respiration seen in frog.

28. ©Ûu PÀ½µ¼ß £oPøÍ SÔ¨¤kP.

Mention the functions of human liver.

29. {÷©õÛ¯õ Hß J¸ B£zuõÚ ÷|õ¯õPU P¸u¨£kQÓx ?

Why is pneumonia considered a dangerous disease ?

30. {n}º GßÓõÀ GßÚ ? Auß ö\¯À£õkPøÍ GÊxP.

What is lymph ? Write its functions.

31. Psoß SÖUS öÁmkz ÷uõØÓzvøÚ Áøµ¢x £õP[PøÍU SÔ¨¤kP.

Draw a neat labelled diagram of L.S. of the human eye.

32. ©õº¦U Tmøh E¸ÁõUS® »õ G¾®¦PÎß ÁøPPÒ ¯õøÁ ?

What are the different types of rib bones that form the rib cage ?

33. A÷©õÛ¯õ }UQPÒ, ³›U Aª» }UQPÒ, ³›¯õ }UQPÒ – J¨¤kP.

Compare - Ammonoteles, Uricoteles and Ureoteles.

A [ v¸¨¦P / Turn over

6737 10

£Sv & IV / PART - IV

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

Note : Answer all questions.

34. (A) PqUPõ¼PÎß ö£õx¨£s¦Pøͨ £mi¯¼kP.

AÀ»x

(B) uÁøÍ°ß Bs CÚ¨ö£¸UP ©sh»zøu ÂÁ›UPÄ®.
(a) List out the general characteristics of the Phylum Arthropoda.

OR

(b) Explain the male reproductive system of frog.

35. (A) ]Ö Sh¼À EnÄ ö\›zuø» ÂÁ›UPÄ®.

AÀ»x

(B) Cµzu® BUêáøÚ ~øµ±µ¼¼¸¢x v_UPÐUS GÆÁõÖ PhzxQÓx ?
(a) Describe in detail, the process of digestion in the small intestine.

OR

(b) How does the blood transport O2 from the lungs to the tissue cells ?

36. (A) ©ÛuÛÀ Põn¨£k® A B O Cµzu ÁøPPøÍ ÂÁ›UPÄ®.

AÀ»x

(B) uø\a _¸UPzvØPõÚ \ÖUS CøÇU ÷Põm£õmøh ÂÍUSP.
(a) Explain A B O blood groups in man.

OR

(b) Explain the sliding filament theory of muscle - contraction.

A

11 6737

37. (A) {³µõÛß Aø©¨ø£¨ £hzxhß ÂÁ›UPÄ®.
AÀ»x
(B) Pøn¯zvß Aø©¨¤øÚ ÂÁ›UPÄ®. Pøn¯® _µUS® íõº÷©õßPÒ
©ØÖ® AÁØÔß £oPøÍ ÂÁ›zx GÊxP.
(a) Explain the structure of neuron with a labelled diagram.

OR

(b) Explain the structure of pancreas. Write about the hormones secreted by
the pancreas and their functions.

38. (A) CT ì÷PÛ[ GßÓõÀ GßÚ ? Auß ©¸zxÁ •UQ¯zxÁzøuU SÔ¨¤kP.
AÀ»x
(B) ö\¯ØøP ¢ymh® GßÓõÀ GßÚ ? ö\¯ØøP ¢ymhzvß £¯ßPÒ
¯õøÁ ?
(a) What is called CT scanning ? Mention its clinical significance.

OR

(b) What is called artificial insemination ? What are the advantages of artificial
insemination ?

-o0o-

A [ v¸¨¦P / Turn over