TN 12th Question Paper 2022 Zoology

No. of Printed Pages : 11
5937
£vÄ Gs
A Register Number

!5937Zoology! 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

5937 2

1. Pv-›-¯UP PÈ-Ä-PøÍ AȨ-£-uØS HØÓ ÁÈ :
(A) G¸-ÁõU-PÀ
(B) G›z-uÀ
(C) §ª-°ß ÷©Ø-£-µ¨-¤À ÷\ªz-uÀ
(D) §ª-°À BÇ-©õP ÷uõsi ÷\ªz-uÀ
Radioactive wastes can be disposed off by __________.
(a) composting
(b) burning
(c) surface impoundments
(d) a deep geological repository

2. GÆ-ÁøP CÚ¨-ö£-¸U-Pz-vÀ ÷ÁÖ-£õ-k-PÒ ÷uõß-Ö® ?
(A) £õ-¼¼ CÚ¨-ö£-¸U-P®
(B) PßÛ CÚ¨-ö£-¸-U-P®
(C) £õ-¼-Ú¨ ö£¸U-P®
(D) (A) ©Ø-Ö® (B) Cµs-k®
In which mode of Reproduction variation are seen ?
(a) Asexual
(b) Parthenogenesis
(c) Sexual
(d) Both (a) and (b)

3. Áõ-Èh ^µ-È-Â-ÚõÀ ªPU Pk-ø©-¯õÚ £õ-v¨-¦-P-ÐUS EÒÍõQ AÈ-²® {ø»-°À
EÒÍ Â»[-Q-Ú® Gx ?
(A) C¸-ÁõÌ-Â-PÒ (B) £õ-¿m-i-PÒ
(C) •m-÷uõ-¼-PÒ (D) £Ó-øÁ-PÒ
Which one of the following are at high risk extinction due to habitat destruction ?
(a) Amphibians (b) Mammals
(c) Echinoderms (d) Birds

A

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4. J¸ £Ç¨-§a-]-°ß EhÀ ö\À-P-ÎÀ, 3 öuõ-S-v EhØ S÷µõ-÷©õ-÷\õ®-P-Ю 2 ‘X’
S÷µõ-÷©õ-÷\õ®-P-Ю Põ-n¨-£m-hõÀ, A¨-§a-]-°ß £õÀ Gß-Ú-ÁõP C¸U-S® ?
(A) ªøP Bs (B) Bs
(C) Cøh-£õÀ E°-› (D) ö£s
When a Drosophila body cells contain 3 sets of autosomes and 2 X chromosomes,
what will be the sex of the fly ?

(a) metamale (b) male

(c) intersex (d) female

5. ©Û-u ©µ-£-qz öuõ-S-v-°À EÒÍ ö©õzu ø|m-µ-áß Põ-µ[-P-Îß Gs-oUøP
_©õº :
(A) 35 ªÀ-¼-¯ß (B) 3.5 ªÀ-¼-¯ß (C) 3.1 ¤À-¼-¯ß (D) 35,000
The total number of nitrogenous in human genome is estimated to be about
__________.

(a) 35 million (b) 3.5 million (c) 3.1 billion (d) 35,000

6. J¸ P¸z-uøh ©õz-vøµ Ash ö\À öÁÎ-±møh GÆ-ÁõÖ ukU-Q-Óx ?
(A) FSH ©Ø-Ö® LH íõº-÷©õß-PÒ _µz-uø» ys-k-Á-uß ‰»®
(B) As-h-|õÍz-vÀ Aøh¨¦ HØ-£-kz-x-uÀ ‰»®
(C) As-h-ö\À Âk-£m-h-Ä-hß Au-øÚ Eh-Ú-i-¯õP AÈz-x-Â-k-Á-uß ‰»®
(D) FSH ©Ø-Ö® LH íõº-÷©õß-PÒ _µz-uø» uk¨-£-uß ‰»®
A contraceptive pill prevents ovulation by :

(a) stimulating release of FSH and LH

(b) blocking fallopian tube

(c) causing immediate degeneration of released ovum

(d) inhibiting release of FSH and LH

A [ v¸¨¦P / Turn over

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7. öÁ¨-£-{-ø»-°À HØ-£-k® ©õØ-Ó[-PøÍz uõ[Q Áõ-Ê® »[-S-PÒ __________ GÚ
AøÇU-P¨-£-k®.

(A) Gs-÷hõ-öuº®-PÒ (B) GU-÷hõ-öuº®-PÒ

(C) ìj-÷Úõ-öuº®-PÒ (D) ªøP-öÁ¨£ ÷ÁÖ-£õmk E°-›-PÒ

Organisms which can survive a wide range of temperature are called __________.

(a) Endotherms (b) Ectotherms

(c) Stenotherms (d) Eurytherms

8. B - ¼®-÷£õ-ø\m-k-PøÍ ys-k-Áx :

(A) Cß-hº-L-ö£-µõß (B) E°º Gvº-ö£õ-¸Ò

(C) Gvº-ö£õ-¸Ò ys-i (D) Gvº-ö£õ-¸Ò

B - lymphocytes are activated by :

(a) Interferon (b) Antibiotics

(c) Antigen (d) Antibody

9. Ái-\õ-ø»-P-ÎÀ Gz-u-ÚõÀ EØ-£z-vUS £¯ß-£-k® ö£õ-x-ÁõÚ uͨ-ö£õ-¸Ò :

(A) P¸®-£õ-ø»U PÈ-Ä-PÒ (B) ÷\õ-¯õ-©õ-Ä

(C) ÷\õÍ En-Ä (D) {»U-P-h-ø»

The most common substrate used in distilleries for the production of ethanol is :

(a) Molasses (b) Soyameal

(c) Corn meal (d) Groundgram

A

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10. ö\¯À-£-k® Âuz-vÀ Gx \›-¯õÚ Á›-ø\ ?

(A) FSH → LH → Cß-î-¤ß → ¢-x-ö\À E¸-ÁõU-P®

(B) LH → Cøh-±mk ö\À-PÒ → öhì-÷hõì-j-÷µõß → ¢-x-ö\À E¸-ÁõU-P®

(C) TSH → FSH → ö\º-÷hõ¼ ö\À-PÒ → ¢xö\À E¸-ÁõU-P®

(D) LTH → ö\º-÷hõ¼ ö\À-PÒ → Bßm-÷µõ-áß → ¢-x-ö\À E¸-ÁõU-P®

Which is the correct order of action ?

(a) FSH → LH → Inhibin → Spermatogenesis

(b) LH → Leydig cells → Testosterone → Spermatogenesis

(c) TSH → FSH → Sertoli cells → Spermatogenesis

(d) LTH → Sertoli cells → Androgen → Spermatogenesis

11. J¸ CÚU-Tm-h® íõºi Ãß-ö£ºU \©-{-ø»-°À G¨-÷£õx C¸U-Põx ?

(A) Á»-ø\-÷£õ-uÀ CÀ-»õu {ø»-°À

(B) E°-›-Ú[-PÒ ÷uºÄ ö\´x P»-Â-°À Dk-£-k®÷£õx

(C) CÚU-Tm-hz-vß AÍÄ ö£›-uõP C¸¢-uõÀ

(D) vjº ©õØ-Ó® CÀ-»õu {ø»-°À

A population will not exist in Hardy Weinberg equilibrium, if :

(a) There is no migration

(b) Individuals mate selectively

(c) The population is large

(d) There are no mutations

A [ v¸¨¦P / Turn over

5937 6

12. ©Û-u-Ûß ABO Cµzu ÁøP-P-øÍ Pm-k¨-£-kz-x-Áx :
(A) £õÀ-\õº-¢u ©µ-£-qU-PÒ (B) £À-Tmk AÀ-½À-PÒ
(C) Y-\õº¢u ©µ-£-qU-PÒ (D) öPõÀ¼ ©µ-£-qU-PÒ
ABO blood group in man is controlled by :

(a) Sex-linked genes (b) Multiple alleles

(c) Y-linked genes (d) Lethal genes

13. ï÷©õ-÷\õ-°ß Gß-£x :
(A) ¤Íõì-÷©õ-i-¯® CÚz-v-¼-¸¢x öÁÎ-÷¯-Ö® |a-_
(B) ï÷©õ-S-÷Íõ-¤Ûß •ß-÷Úõ-i
(C) ï÷©õ-L-ø£-»ì CÚz-v-¼-¸¢x öÁÎ-÷¯-Ö® |a-_
(D) ìmöµ¨-÷hõ-PõU-P-ê-¼-¸¢x öÁÎ-÷¯-Ö® |a-_
Haemozoin is :

(a) A toxin from plasmodium species

(b) A precursor of haemoglobin

(c) A toxin from haemophilus species

(d) A toxin from streptococcus

14. RÌ-Á-¸-Á-Ú-ÁØ-ÖÒ G¢u J¸ uP-Á-ø©¨¦, En-Ä ©Ø-Ö® }º £Ø-ÓõU-S-øÓø¯ uºUP
Eu-Ä-Q-Óx ?
(A) SÖ-Q-¯ Põ» CÚ¨-ö£-¸U-P® (B) Sκ EÓU-P®
(C) Á»-ø\-÷£õ-uÀ (D) ÷Põøh EÓU-P®
Which one of the following is a suitable adaptation to overcome food and water
scarcity ?

(a) A short reproductive period (b) Winter sleep

(c) Migration (d) Summer sleep

A

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15. PÈ-Ä-}øµ E°-›¯ _z-v-P-›¨¦ ö\´-Á-uß ÷|õU-P® :
(A) £i-Áõ-uø» SøÓz-uÀ
(B) E°-›-¯ BU-]-áß ÷uøÁ-ø¯ SøÓz-uÀ
(C) £i-Áõ-uø» Av-P-›z-uÀ
(D) E°-›-¯ BU-]-áß ÷uøÁ-ø¯ Av-P-›z-uÀ
The purpose of biological treatment of waste water is to __________.
(a) Reduce sedimentation
(b) Reduce BOD
(c) Increase sedimentation
(d) Increase BOD

£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 of the following. Question number 24 is compulsory.

16. •x-ø©-{ø» Gß-ÓõÀ GßÚ ?
What is senescent phase of life ?

17. ¢-xz vµ-Áz-vÀ Ah[-Q-²ÒÍøÁ ¯õøÁ ?
What is the composition of semen ?

18. POCSO \m-hz-vß •U-Q-¯z-x-Á® ¯õøÁ ?
State the importance of POCSO Act.

19. £i-ö¯-kz-uÀ Gß-ÓõÀ GßÚ ?
What is transcription ?

20. öuõß-ø©-¯õÚ §ª-°À Põ-n¨-£mh Áõ-²U-Pøͨ £m-i-¯-¼-k-P.
List out major gases seems to be found in the Primitive earth.

A [ v¸¨¦P / Turn over

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21. A«- ¤ - ¯ õ- ] - ê ß i÷µõ÷£õ- ÷ \õ´mPÒ |® Eh- ¼ À GÆ- Á õÖ CÖ- v C»UøP
ö\ßÓøhQÓx ?
How does the trophozoite of Amoebiasis reach the final destination in our body ?

22. ø\©õ-»â – Áøµ-¯-ÖU-P-Ä®.
Define Zymology.

23. ö£¸¢-v-µÒ ©µ-£Ø-Ö¨ ÷£õ-uÀ Gß-ÓõÀ GßÚ ?
What is Mass extinction ?

24. öPõ- ÷ µõ- Ú õ øÁµì J¸ RNA øÁµì. Ai¨- £ - ø h- ° À PCR öuõ- È À- ~ m- £ ®
DNA&ø¯U Psk¤iUS® öuõÈÀ~m-£®. A¨£i-ö¯ÛÀ, PCR öuõ-ÈÀ~m£®
öPõ-÷µõ-Úõ øÁµìøé Ps-h-Ô-u-¼À GÆ-ÁõÖ £¯ß-£-k-Q-Óx ?
Corona Virus is a RNA virus. Basically PCR technique is used for detecting DNA.
If so, how PCR technique is used for diagnosing Corona Virus ?

£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 of the following. Question number 33 is compulsory.

25. P¸U-öPõø» ©Ø-Ö® ]-_U-öPõø» ÷ÁÖ-£-kz-x-P.
Differentiate foeticide and infanticide.

26. G›z-÷µõ-¤Íõì-÷hõ-]ì L¥-hõ-¼ì ÷|õø¯ GÆ-ÁõÖ uºU-P-»õ® ?
How will you prevent erythroblastosis foetalis ?

A

9 5937

27. ©÷»-›-¯õ ÷|õ´US Gv-µõP uk¨-§] EÒÍ-uõ ? EÚx ÂøhUS Põ-µ-n® u¸-P.

Is vaccine available against malaria ? Give reason for your answer.

28. C®-³-÷Úõ-S-÷Íõ-¦-¼ß ‰»U-T-Ôß £h® Áøµ¢x £õ-P[-PøÍU SÔU-P-Ä®.

Draw the diagram of immunoglobulin molecule and label the parts.

29. ~s-q-°-›¯ G›-ö£õ-¸Ò P»ß £ØÔ ]Ö SÔ¨¦ GÊ-x-P.

Write short note on microbial fuel cell.

30. ÷ÁÖ-£-kz-xP : ªøPöÁ¨£ ÷ÁÖ-£õ-k E°-›-PÒ (³›-öuº®-PÒ) ©Ø-Ö® SøÓ-öÁ¨£
÷ÁÖ-£õmk E°-›-PÒ (ì-j-÷Úõ-öuº®-PÒ).

Differentiate Eurytherms and Stenotherms.

31. ]Ø-ÔÚ ©s-h» £À-Á-øPz ußø©°ß ‰ßÖ ¤›-Ä-PøÍ ÂÍU-S-P.

Explain the three indices of species diversity.

32. |õ® ªøP En-Åm-hzøu GÆ-ÁõÖ Pm-k¨-£-kz-u-»õ® ?

How can we control eutrophication ?

33. £À-v-Óß ©Ø-Ö® SÖ-v-Óß BQ-¯ Cµs-iØ-S® Cøh-÷¯-²ÒÍ ÷ÁÖ-£õ-k-PøÍ
GÊ-x-P.

Write the differences between multipotency and oligopotency.

A [ v¸¨¦P / Turn over

5937 10

£Sv & IV / PART - IV
SÔ¨¦ : AøÚzx ÂÚõUPÐUS® Âøh¯ÎUPÄ®. 5x5=25
Note : Answer all the questions.

34. (A) ©Û-u P¸¨-ø£-°ß Aø©¨ø£ uS¢u Áøµ-£-hz-x-hß ÂÁ-›U-P-Ä®.
AÀ»x
(B) |©- x C¢- v ¯ |õk •Ê- ø ©- ¯ õÚ CÚ¨- ö £- ¸ UP B÷µõU- Q - ¯ zøu Aøh- ¯
÷©ØöPõÒÍ ÷Ás-i¯ Ez-v-PÒ ¯õøÁ ?
(a) Describe the structure of the human uterus with a neat labelled diagram.
OR
(b) What are the strategies to be implemented in India to attain total reproductive
health ?

35. (A) ¦µu EØ-£z-v-°À, ö©õÈ ö£¯ºz-uÀ TÖ-P-Îß £[-QøÚ ÂÍU-S-P.
AÀ»x
(B) ©µ-£-qU SÔ-±-k-P-Îß ]Ó¨-¦¨ £s-¦-PÒ ¯õøÁ ?
(a) Explain the role of translation components in protein synthesis.
OR
(b) List out the salient features of Genetic Code.

36. (A) íõºi & Ãß- ö £ºU \©ß- £ õk (p2+2pq+q2=1) CÚU- T m- h z- v À \©- { - ø »
C¸¨-£øu GÆ-Áõ-Ö ÂÍU-SQ - Ó
- x ? ©µ-¤¯
- À \©-{ø
- »-ø¯¨ £õ-vU-S® Põ-µo
- P - Ò
H÷u-Ý® |õßQøÚ¨ £m-i-¯-¼-k-P.
AÀ»x
(B) H÷u-Ý® I¢x £õU-j-›-¯õ ÷|õ´-Pøͨ £ØÔ GÊ-x-P.
(a) How does Hardy-Weinberg’s expression (p2+2pq+q2=1) explain that genetic
equilibrium is maintained in a population ? List any four factors that can
disturb the genetic equilibrium.
OR
(b) Explain any five bacterial disease.

A

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37. (A) C¯À¦ ÷|õ´z- u øh Põ¨¦ GÆ- Á õÖ |® Ehø» ÷|õ´- P - Î - ¼ - ¸ ¢x
£õ-x-PõU-Qß-Óx Gß-£øu ÂÍU-S-P.
AÀ»x
(B) PCR öuõ-ÈÀ-~m-£z-vß ö\¯À-•-øÓø¯ ÂÍU-S-P.
(a) Explain how innate immunity protects our body against diseases.

OR

(b) Explain the process of PCR technique.

38. (A) }›ß •U-Q¯ £s-¦-Pøͨ £m-i-¯-¼-k-P.
AÀ»x
(B) ©¸z-x-ÁU- P-ÈÄ ©Ø-Ö® ªß-Ú-qU PÈ-Ä-PøÍ |õ® GÆ-ÁõÖ ÷©»õsø©
ö\´-¯-»õ® ?
(a) List out the essential properties of water.

OR

(b) How can we manage medical wastes and E-Waste ?

-oOo-

A [ v¸¨¦P / Turn over