TN 11th Question Paper 2023 Botany

Tamil Nadu
State Board

2023
QUESTION
PAPER

No. of Printed Pages : 11
6732
£vÄ Gs
A Register Number

!6732IstYearBotany!
PART - III
uõÁµÂ¯À / BOTANY
( 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

6732 2

1. \›¯õÚ Cønø¯z ÷uº¢öukUPÄ®.
(A) Cø»zöuõÈÀ Cø»UPõ®¦ & A÷Pæ¯õ
(B) ÷\ªUS® Cø»PÒ & »õÛ¯õ
(C) ø£ & ÷P÷»õL¤À»®
(D) SkøÁ & ³m›S÷»›¯õ
Pick out the correct Pair :
(a) Phyllode - Acacia
(b) Storage leaves - Launea
(c) Bladder - Calophyllum
(d) Pitcher - Utricularia

2. RÌUPshÁØÖÒ Qµ¨ì _ÇØ]°À |øhö£Óõu ÂøÚ Gx ?
(A) L¨µU÷hõì 1, 6 ¤ì£õì÷£m Eøh¢x Cµsk ‰»UTÖ 3C ÷\º©[PÍõP
©õÖQÓx
(B) uͨö£õ¸Î¼¸¢x £õì÷£m }UP®
(C) 3C &¼¸¢x 2C &US L£õì÷£m ©õÖuÀ
(D) ÷©ØPõs AøÚzx®
Which of the following reaction is not involved in Kreb’s cycle ?
(a) Splitting of Fructose 1, 6 bisphosphate into two molecules of 3C compounds
(b) Dephosphorylation from the substrates
(c) Shifting of phosphate from 3C to 2C
(d) All of the above

3. ¦Â¦øuUPÛ __________ uõÁµzvÀ Põn¨£kQÓx.
(A) AµõUQì øí÷£õâ¯õ (B) öhì÷©õi¯®
(C) »õ¨ »õ¨ £º§›¯ì (D) QøÍm÷hõ›¯õ
Which of the following plant has Geocarpic type of fruits ?
(a) Arachis hypogea (b) Desmodium

(c) Lab Lab purpureus (d) Clitoria

A

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4. öÁUêÀ»› CuÇø©Ä __________ Sk®£zvß £s£õS®.
(A) ö\õ»õ÷Ú] (B) L÷£÷£ê (C) ¤µõêU÷P] (D) Bìm÷µ]
Vexillary aestivation is characteristic of the family __________.
(a) Solanaceae (b) Fabaceae (c) Brassicaceae (d) Asteraceae

5. ÷Áv \ÆÅk£µÁÀ ÷Põm£õmiøÚ E¸ÁõUQ¯Áº ¯õº ?
(A) R. îÀ (B) P. ªmö\À
(C) ö©ÀÂß PõÀÂß (D) G©º\ß
Who proposed Chemiosmosis theory ?
(a) R. Hill (b) P. Mitchell
(c) Melvin Calvin (d) Emerson

6. DNA &Âß Cµmøha _¸Ò ©õv› __________ BÀ öÁΰh¨£mhx.
(A) L¤öµm \õ[Pº (B) ¼ß÷Ú¯ì
(C) µõ£ºm ÷Põ› (D) Áõm\ß & Q›U
The double helix model of DNA was proposed by :
(a) Fred Sanger (b) Linnaeus
(c) Robert Corey (d) Watson and Crick

7. J¸ uõÁµzvØS AøÚzxU PÛ©[PЮ ÁÇ[P¨£mk Mn ö\ÔÄ ©mk®
AvP©õP C¸¢uõÀ HØ£k® SøÓ£õk ¯õx ?
(A) Ca EmöPõÒvÓøÚ ©mk® AvP›US®
(B) Fe, Mg EmöPõÒvÓøÚ ukUS®. BÚõÀ Ca uµ
(C) Fe, Mg ©ØÖ® Ca EmöPõÒvÓøÚz ukUS®
(D) Fe, Mg ©ØÖ® Ca EmöPõÒvÓøÚ AvP›US®
If a plant is provided with all mineral nutrients but Mn concentration is increased,
what will be the deficiency ?
(a) Only increase the uptake of Ca
(b) Prevent the uptake of Fe, Mg but not Ca
(c) Prevent the uptake of Fe, Mg and Ca

(d) Increase the uptake of Fe, Mg and Ca

A [ v¸¨¦P / Turn over

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8. SßÓÀ £S¨¤À Jzvø\Ä S÷µõ÷©õ÷\õ®PÒ ÷áõi ÷\ºzuÀ __________ GÚ
AøÇUP¨£kQÓx.

(A) ]ÚºâmkPÒ (B) ø£Áõ»sm (C) ]Úõ¨]ì (D) ¤›Ä{ø»

The pairing of homologous chromosomes in meiosis is known as :

(a) Synergids (b) Bivalent (c) Synapsis (d) Disjunction

9. RÌUPõs£ÚÁØÖÒ "Höáßm Bµg_' GßÖ AøÇUP¨£kÁx :

(A) ABA (B) BU]ß

(C) NAA (D) 2, 4 - D ©ØÖ® 2, 4, 5 - T

__________ is called ‘Agent Orange’.

(a) ABA (b) Auxin

(c) NAA (d) 2, 4 - D and 2, 4, 5 - T

10. RÌPõs£ÚÁØÖÒ BºUQ£õUj›¯zøu PshÔP.

(A) i›¨÷£õÛ©õ (B) A\m÷hõ£õUhº

(C) ö©zu÷Úõ£õUj›¯® (D) GºÂܯõ

Identify the Archaebacterium from the following :

(a) Treponema (b) Acetobacter

(c) Methanobacterium (d) Erwinia

A

5 6732

11. C¸Âøu°ø»z uõÁµ[PÎÀ Jmk¨÷£õkuÀ öÁØÔPµ©õP EÒÍx. BÚõÀ J¸
Âøu°ø»z uõÁµ[PÎÀ AÆÁõÖ CÀø». HöÚÛÀ C¸Âøu°ø»z
uõÁµ[PÎÀ :
(A) Cµshõ®{ø» Áͺa]UPõÚ ÷P®¤¯® Aø©¢v¸¨£x
(B) ÁõìS»õº PØøÓPÒ J¸ Áøͯ©õP Aø©¢v¸¨£x
(C) ø\»USÇõ´ TÖPÒ J¸•øÚ°À C¸¢x Akzu •øÚ Áøµ Cøn¢x
Aø©¢v¸¨£x
(D) PõºU ÷P®¤¯® Aø©¢v¸¨£x
Grafting is successful in dicot plants but not in monocot plants because the dicot
plants have :
(a) Cambium for secondary growth
(b) Vascular bundles arranged in a ring
(c) Vessels with elements arranged end to end
(d) Cork Cambium

12. ö£õ¸zxP :
(1) Põmö»ÆìQ (i) E°ºzxi¨¦ ÷Põm£õk
(2) ìj£ß ÷íÀì (ii) ›÷»&£®¨ ÷Põm£õk
(3) ÷á.]. ÷£õì (iii) TmiønÄ }µõ¨÷£õUQß CÊÂø\ ÷Põm£õk
(4) iUéß & áõ¼ (iv) ÷Áº AÊzu®
(A) (1)-(ii), (2)-(iv), (3)-(i), (4)-(iii)
(B) (1)-(i), (2)-(iii), (3)-(iv), (4)-(ii)
(C) (1)-(ii), (2)-(iv), (3)-(iii), (4)-(i)
(D) (1)-(iii), (2)-(iv), (3)-(i), (4)-(ii)
Match the following :
(1) Godlewski (i) Pulsation theory
(2) Stephen Hales (ii) Relay - pump theory
(3) J.C. Bose (iii) Cohesion and Transpiration Pull theory
(4) Dixon & Jolly (iv) Root pressure
(a) (1)-(ii), (2)-(iv), (3)-(i), (4)-(iii)
(b) (1)-(i), (2)-(iii), (3)-(iv), (4)-(ii)
(c) (1)-(ii), (2)-(iv), (3)-(iii), (4)-(i)

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

A [ v¸¨¦P / Turn over

6732 6

13. ªßÚq ~s÷nõUQø¯ •uß•u¼À AÔ•P¨£kzv¯Áº :

(A) Z. ÷áß\ß (B) GºÚìm µìPõ
(C) H. ÷µõPº (D) Cµõ£ºm íüU
Electron Microscope was first introduced by __________.

(a) Z. Jansen (b) Ernest Ruska

(c) H. Roher (d) Robert Hooke

14. C¸Âøu°ø»z uõÁµ[PÎÀ ø\»U SÇõ´PÎß EÒöÁΨ£Sv
A¸Põø©°¾ÒÍ £õµßøP©õ ö\ÀPμ¸¢x £» £¿ß ÷£õßÓ EÒ&ÁÍ›PÍõÀ
AøhUP¨£kQÓx. C¢u £¿ß ÷£õßÓ Aø©¨¦ __________ GßÖ AøÇUP¨&
£kQÓx.

(A) AÀ£ºÚ® (B) i³µö©ß
(C) øh÷»õ\õ´mì (D) øh÷»õìPÒ
In many dicot plants, the lumen of the xylem vessels is blocked by many balloon
like in-growths from the neighbouring parenchymatous cells. These balloon like
structures are called __________.

(a) Alburnum (b) Duramen

(c) Tylosoids (d) Tyloses

15. RÌUPshÁØÖÒ G¢u â®÷Úõìö£º® uõÁµ® B®£øµ EØ£zv ö\´QÓx ?

(A) ø£Ûmiì \UêÛLö£µõ (B) Ai¯õsh®
(C) }mh® (D) Bì•shõ
Which of the following Gymnosperm plant produces amber ?

(a) Pinites succinifera (b) Adiantum

(c) Gnetum (d) Osmunda

A

7 6732

£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. ÷P¨÷ÚõL¤¼U £õUj›¯[PÒ GßÓõÀ GßÚ ?
What is Capnophilic bacterium ?

17. ÷Á›ß £SvPøͨ £h® Áøµ¢x £õP[PøÍ SÔUPÄ®.
Draw and label the parts of regions of root.

18. ¤ÍU÷hõìjÀ GßÓõÀ GßÚ ? Kº GkzxUPõmkz u¸P.
What is plectostele ? Give one example.

19. ª¯õ]êß •UQ¯zxÁ[PÒ H÷uÝ® CµsiøÚ GÊxP.
Write any two importance of meiotic cell division.

20. ìQ¼µßøP©õ ©ØÖ® iµURkPÒ Hß CÓ¢u ö\ÀPÍõPU Põn¨£kQÓx ?
Why the cells of sclerenchyma and tracheids become dead ?

21. ø£Úì, ÷©õµì Pmøhø¯ ÷ÁÖ£kzxP.
Differentiate the wood formed in Pinus from that of Morus.

22. \øu¨£ØÖÒÍ uõÁµ[PÎÀ _Áõ\ DÄ ©v¨¦ §ä¯®. Hß ?

Respiratory quotient is zero in succulent plants. Why ?

A [ v¸¨¦P / Turn over

6732 8

23. RÌUPshÁØÔØS Pø»aö\õØPÒ u¸P.
(A) J¸ ÁÍ©ØÓ ©Pµ¢uzuõÒ
(B) ©Pµ¢uzuõÒ AÀ¼ CuÌPÐhß Cøn¢v¸zuÀ
Give the technical terms for the following :

(a) A sterile stamen

(b) Stamens are attached to the petals

24. ø|mµáß _ÇØ]°À ø|m÷µmhõuÀ {PÌa]°À £[÷PØS® 2 £õUj›¯[PÎß
ö£¯ºPøÍ GÊxP.
Name the two bacteria that are involved in the nitrification process of Nitrogen
Cycle.

£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. ¤øµ÷¯õLø£mPÎß P¸ÄÖu¾US }º AÁ]¯® GßÓ P¸zøu HØQÓõ¯õ ? EÚx
Âøhø¯ {¯õ¯¨£kzxP.
Do you agree with the statement ‘Bryophytes need water for fertilization’ ? Justify
your answer.

26. BU]ß Áõ̯À ÂøÍÄPøÍ GÊxP.
Write the physiological effects of auxin.

27. Hß ]» uõÁµ[PÎÀ £ØÓõUSøÓ AÔSÔPÒ, •u¼À CÍ® Cø»PÎÀ
÷uõßÖQÓx. ¤Ó uõÁµ[PÎÀ •vº¢u £õP[PÎÀ ÷uõßÖQÓx ?
Why is that in certain plants deficiency symptoms appear first in younger leaves

while in others they do so in mature organs ?

A

9 6732

28. uõÁµa ö\À¼ß ~snø©¨ø£ £h® Áøµ¢x £õP[PøÍU SÔUPÄ®.

Draw and label the parts of ultra-structure of plant cell.

29. C¸Âøu°ø»PøͲ® ÷Põ¨ø£ ÁiÁ¨ §zuÍzøu²® öPõsh uõÁµ[PøÍ
GÆÁõÖ ÁøP¨£kzxÁõ´ ?

Where will you place the plants which contain two cotyledons with cup shaped
thalamus ?

30. Áµ®£ØÓ QøÍzuø»²®, Áµ®¦øh¯ QøÍzuø»²® J¨¤kP.

Compare Sympodial branching with Monopodial branching.

31. DNA ©ØÖ® RNA ÷ÁÖ£õkPøÍ AmhÁøn¨£kzxP.

Tabulate the differences between DNA and RNA.

32. Fk¸ÁÀ ªßÚq ~s÷nõUQ°ß •UQ¯zxÁzøuU TÖP.

Bring out the significance of Transmission Electron Microscope.

33. ¦Óo ö\ÀPÎÀ EÒÍ £µÁÀ AÊzu¨ £ØÓõUSøÓ 5 ÁÎ GßÓ A;®
Aøua `Ì¢xÒÍ ¦Óz÷uõÀ Aiz÷uõÀ ö\ÀPÎÀ EÒÍ £µÁÀ AÊzu¨
£ØÓõUSøÓ 2 ÁÎ GßÓ A;® C¸¨¤ß, }º ö\À¾® vø\ ¯õx ?

If a cell in the cortex with DPD of 5 atm is surrounded by hypodermal cells with
DPD of 2 atm, what will be the direction of movement of water ?

A [ v¸¨¦P / Turn over

6732 10

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

Note : Answer all the questions.

34. (A) Qµõ® ÷|º, Qµõ® Gvº £õUj›¯[PÐUS Cøh÷¯ EÒÍ ÷ÁÖ£õkPøÍz
u¸P.
AÀ»x
(B) hõmkµõ ö©mhÀ uõÁµzvß Pø»a ö\õØPøÍ ÂÁ›UPÄ®.
(a) List out the differences between Gram positive and Gram negative bacteria.

OR

(b) Write the Botanical description of Datura metel.

35. (A) ¦÷µõm÷hõìj¼ß ÁøPPøÍ £hzxhß ÂÁ›UPÄ®.
AÀ»x
(B) uõÁµa ö\À¾US® »[S ö\À¾US® EÒÍ ÷ÁÖ£õkPøÍ AmhÁøn¨&
£kzxP.
(a) Explain the types of protostele with diagram.

OR

(b) Tabulate the differences between Plant cell and Animal cell.

36. (A) CuÇø©Âß ÁøPPøÍ ÂÁ›UPÄ®.
AÀ»x
(B) ø©mhõ]ì ö\À £S¨¤ß £i{ø»PøÍ ÂÁ›UPÄ®.
(a) Explain the different types of aestivation.

OR

(b) Explain the stages of mitotic division in detail.

A

11 6732

37. (A) C¸Ò ÂøÚPÎß £i{ø»PøÍ ÂÁ›UPÄ®.
AÀ»x
(B) SÐU÷Põì Eøh²® ©õØÖÁȨ £õøu°ß ö£¯º GßÚ ? AvÀ |øhö£Ö®
ÂøÚPøÍ ÂÁ›UPÄ®.
(a) Explain the steps involved in Dark reactions in a detailed manner.
OR
(b) What is the name of alternate way of glucose breakdown ? Explain the
process involved in it.

38. (A) ìQÎøµkPÎß ÁøPPøÍ ÂÁ›UPÄ®.
AÀ»x
(B) uõÁµ Áͺa]ø¯ ÂÀ BUé÷Úõ«mhº öPõsk GÆÁõÖ AÍÂkÁõ´ ?
(a) Explain sclereids with their types.
OR
(b) How will you measure the growth of the plant using an Arc auxanometer ?

-o0o-

A [ v¸¨¦P / Turn over