TN 11th Question Paper 2024 Botany

TN PUBLIC EXAM

QUESTION
PAPER
2024

No. of Printed Pages : 8
7632
£vÄ Gs
A Register Number

!7632IstYearBotany!
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 |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

7632 2

1. RÌUPõs£øÁPÎÀ G¢u £Sv £õUj›¯ ö\À¼ØS Jmk® £sø£ u¸QÓx ?
(A) ¤Íõì©õ \ÆÄ (B) ö\À _Áº
(C) QøÍU÷Põ÷P¼Uì (D) EmP¸ \ÆÄ
Which of the following components provides sticky character to the bacterial cell ?
(a) Plasma membrane (b) Cell wall
(c) Glycocalyx (d) Nuclear membrane

2. ÁÓsh {»z uõÁµ©õÚ J£ßæ¯õÂÀ GÆÁøP }µõ¨ ÷£õUS \õzv¯® ?
(A) ö»siö\À (B) U³miQÒ
(C) Cø»zxøÍ (D) ÷©ØTÔ¯ AøÚzx®
What type of transpiration is possible in the Xerophyte Opuntia ?
(a) Lenticular (b) Cuticular
(c) Stomatal (d) All the above

3. ö£¢u® ©ØÖ® íüUPº ÁøP¨£õk ‰»® GzuøÚ Sk®£[PÒ ÂÁ›UP¨&
£mkÒÍÚ ?
(A) 202 (B) 204 (C) 102 (D) 212
How many families were described by Bentham and Hooker classification ?
(a) 202 (b) 204 (c) 102 (d) 212

4. QøÍUPõø»]ì ©ØÖ® Qµ¨ì _ÇØ]°øÚ CønUS® ÷\º©® :
(A) A]møhÀ CoA (B) \U]ÛU Aª»®
(C) ]m›U Aª»® (D) ø£¸ÂU Aª»®
The compound which links glycolysis and Krebs Cycle is :
(a) Acetyl CoA (b) Succinic acid
(c) Citric acid (d) Pyruvic acid

5. ø\m÷hõS÷µõ® BUê÷hêÀ Põn¨£k® PÛ©® :
(A) xzu|õP® (B) C¸®¦ (C) uõªµ® (D) ö©UÜ]¯®
Cytochrome oxidase contains __________ mineral.
(a) Zinc (b) Iron (c) Copper (d) Magnesium

A

3 7632

6. SßÓÀ £S¨¤À (ª¯õêì) SÖU÷P P»zuÀ G[S Bµ®¤UQÓx ?
(A) ö»¨÷hõmjß (B) i¨÷Íõmjß
(C) ø\U÷Põjß (D) £õUQjß
In meiosis crossing over is initiated at :
(a) Leptotene (b) Diplotene
(c) Zygotene (d) Pachytene

7. £õì÷£õDÚõÀ ø£¸÷Ám •ußø© CO2 Hؤ¯õP ö\¯À£kÁx :
(A) C2 uõÁµ[PÒ (B) C3 uõÁµ[PÒ
(C) C3 ©ØÖ® C4 uõÁµ[PÒ (D) C4 uõÁµ[PÒ
Phosphoenol pyruvate is the primary CO2 acceptor in :
(a) C2 plants (b) C3 plants
(c) C3 and C4 plants (d) C4 plants

8. SÁõßh÷\õ® __________ CÀ Põn¨£kQÓx.
(A) ÷PõÀøP Eh»[PÒ (B) ø©m÷hõPõsi›¯õ
(C) Gs÷hõ¤Íõ\ Áø» (D) £_[PoP®
A quantasome is present in __________.
(a) Golgi bodies (b) Mitochondria
(c) Endoplasmic reticulum (d) Chloroplast

9. ¤øµ÷¯õL¤À»®, h¯ì÷Põ›¯õ GߣøÁ GuØS GkzxUPõmk ?
(A) usk ö©õmk, ~Û ö©õmk
(B) Cø» ö©õmk, ~Û ö©õmk
(C) usk ö©õmk, Cø» ö©õmk
(D) Cø» ö©õmk, usk ö©õmk
Bryophyllum and Dioscorea are examples for :
(a) Cauline bud, apical bud
(b) Foliar bud, apical bud
(c) Cauline bud, foliar bud
(d) Foliar bud, cauline bud

A [ v¸¨¦P / Turn over

7632 4

10. Áõm\ß ©ØÖ® Q›UQß Cµmøh _¸Ò DNA ©õv› __________ ÁøP¯õÚx.
(A) H (B) A (C) B (D) C
Watson and Crick model of DNA double helix is __________ form.
(a) H (b) A (c) B (d) C

11. vº\ì Gߣx J¸ ÁøP¯õÚ :
(A) ]Ó¨¦ ÁøP ©g\› (B) P»¨¦ ÁøP ©g\›
(C) ø\÷©õì ©g\› (D) µ]÷©õì ©g\›
Thyrsus is a type of :
(a) Special inflorescence (b) Mixed inflorescence
(c) Cymose inflorescence (d) Racemose inflorescence

12. C¸£UP J¸[Pø©¢u ÁõìS» PØøÓ Põn¨£kÁx :
(A) iµ]Úõ (B) SUPº¤m÷h]
(C) ³UPõ (D) ¼À¼÷¯]
Bicollateral vascular bundles are present in :
(a) Dracaena (b) Cucurbitaceae
(c) Yucca (d) Liliaceae

13. ¤ßÁ¸ÁÚÁØÖÒ ö|k® £PÀ uõÁµ[PøÍ ÷uº¢öukUPÄ® :
(A) E¸øÍ, uUPõÎ, £¸zv
(B) £mhõo, £õº¼, Kmì
(C) Kmì, PõU¼£º, ÷µõ÷hõöhsmµõß
(D) ¦øP°ø», ö|À, ÷\õ¯õö©õaø\
Select long day plants from the following :
(a) Potato, Tomato, Cotton
(b) Pea, Barley, Oats
(c) Oats, Cocklebur, Rhododendron
(d) Tobacco, Rice, Soyabean

14. ÷µõ÷hõLø£]&ß ÷\ª¨¦ ö£õ¸Ò :
(A) ¦÷Íõ›i¯ß uµ\® (B) £õµõø©»õß
(C) ©õÛmhõÀ (D) »õªÚõ›ß
The reserve food of Rhodophyceae is :
(a) Floridean starch (b) Paramylon
(c) Mannitol (d) Laminarin

A

5 7632

15. •vº¢u usiß ø©¯¨ £Sv°À Cµshõ® {ø» ø\»©õÚx Ahº ©ØÖ®
PiÚ©õÚ Aø©¨ø£U öPõsh }º Phzuõ¨ £Sv :
(A) Pmøh (B) AÀ£ºÚ®
(C) i³µö©ß (D) £õìm
Inner, darker & harder portion of secondary Xylem that cannot conduct water in an older
dicot stem is called :
(a) Wood (b) Alburnum
(c) Duramen (d) Bast

£Sv & II / PART - II

SÔ¨¦ : GøÁ÷¯Ý® BÖ ÂÚõU-P-ÐUS ©mk® Âøh-¯-ÎU-P-Ä®. ÂÚõ Gs 24&US
Pm-hõ-¯-©õP Âøh-¯-ÎU-P-Ä®. 6x2=12

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

16. ~Û BvUP® GßÓõÀ GßÚ ?
What is apical dominance ?

17. |õßS ÁøP¯õÚ Aì÷PõPÛ²¸¨¤ß ö£¯ºPøÍ GÊxP.
Name the four types of Ascocarps.

18. G¢u £¸ÁzvÀ Bg]÷¯õìö£º® uõÁµ[PÎÀ öÁ\ÀPÒ ö£›uõP C¸US® ?
Hß ?
In which season the vessels of Angiosperms are larger in size, why ?

19. {³U³À GßÓõÀ GßÚ ?
What is Nucule ?

20. uõÁµ® A \õmøh ÁõÀ ÷|õ´, uõÁµ® B ]ØÔø» ÷|õ´ AÔSÔPÒ öPõskÒÍx.
A, B &°ß PÛ©U SøÓ£õmiøÚU PshÔP.
Plant A shows Whiptail disease, plant B shows a Little Leaf disease. Identify mineral deficiency
of plant A and B.

A [ v¸¨¦P / Turn over

7632 6

21. ö\õ»õ÷Ú] Sk®£zvß EnÄz uõÁµ[PÒ Cµsiß C¸ö\õØ ö£¯ºPøÍ
GÊxP.
Write two Binomial names of food plants in Solanaceae family.

22. _Áõ]zu¼ß Jmkö©õzu {PÌa]UPõÚ \©ß£õmøh GÊxP.
Write the equation of overall process of Respiration.

23. }›¯À vÓøÚU Pmk¨£kzx® TÖPÒ ¯õøÁ ?
What are the parameters which control water potential ?

24. \x¨¦ {»z uõÁµ[PÒ GÆÁõÖ _Áõ]UQßÓÚ ?
How do mangrove plants respire ?

£Sv & III / PART - III

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

25. Áͺa] Áøͯ[Pøͨ £ØÔ £i¨£uß •UQ¯zxÁzøu GÊxP.
Write the importance of studying growth rings.

26. ÷Áº HÖöPõiPÒ GÆÁõÖ usk HÖöPõiPμ¸¢x ÷ÁÖ£kQßÓÚ ?
How root climbers differ from stem climbers ?

27. £_[PoPzvß Aø©¨ø£ £h® Áøµ¢x £õP[PøÍU SÔUPÄ®.
Draw and label the parts of structure of chloroplast.

28. uµ\ \ºUPøµ Cøh©õØÓU öPõÒøP°À £õì£õ›÷»ì ö|õv GÆÁõÖ Cø»z
xøÍ°øÚz vÓUQÓx ?
How does phosphorylase enzyme open the stomata in starch sugar interconversion theory ?

29. £õUj›¯õÁõÀ ©ÛuÝUS EshõS® ÷|õ´PÒ H÷uÝ® ‰ßÔøÚ GÊv,
AÁØÔß ÷|õ´U PõµoPøͲ® GÊxP.
Name any 3 human diseases caused by bacteria and their pathogens.

A

7 7632

30. _Áõ\ DÄ GßÓõÀ GßÚ ? P›© Aª»zvß (©õ¼U Aª»zvß) _Áõ\ DÄ ©v¨¦
¯õx ?
What is Respiratory Quotient ? What is the RQ value of organic acid (Malic acid) ?

31. uõÁµÂ¯¼ß£i Pmøh Gߣx GßÚ ?
What is wood botanically ?

32. C¸Ò ÂøÚ°ß ‰ßÖ {ø»PÒ ¯õøÁ ?
What are the three phases of Dark reaction ?

33. øÁµêß E°¸ÒÍ £s¦PÒ H÷uÝ® ‰ßÔøÚ GÊxP.
Write any three living characters of viruses.

£Sv & IV / PART - IV

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

34. (A) ø\m÷hõøPÛßPÎß Áõ̯À ÂøÍÄPøÍ GÊxP.
AÀ-»-x
(B) ©õºPõßæ¯õÂß ÂzuPz uõÁµzvß Aø©¨¤øÚ £h® Áøµ¢x
ÂÁ›UPÄ®.
(a) Write the physiological effects of Cytokinins.
OR
(b) Draw and explain the structure of Marchantia Sporophyte.

35. (A) `À Jmk•øÓ°ß ÁøPPøÍ GkzxUPõmkhß ÂÁ›UPÄ®.
AÀ-»-x
(B) ø©mhõêì, ª¯õêì ö\À £S¨ø£ ÷ÁÖ£kzxP. (©øÓ•P / ÷|º•P
ö\À £S¨¦)
(a) Explain the different types of placentation with example.
OR
(b) Differentiate Mitosis from Meiosis.

A [ v¸¨¦P / Turn over

7632 8

36. (A) DNA &Âß Aø©¨ø£ ÂÁ›UPÄ®.
AÀ-»-x
(B) QøÍUPõø»]ìêß £i{ø»PøÍ GÊxP.
(a) Explain the structure of DNA.
OR
(b) Write the schematic representation of Glycolysis.

37. (A) C¸Âøu°ø» Cø»°ß EÒÍø©¨ø£ £h® Áøµ¢x £õP® SÔUPÄ®.
AÀ-»-x
(B) C3 uõÁµ[PÒ ©ØÖ® C4 uõÁµ[PÐUQøh÷¯¯õÚ ÷ÁÖ£õkPøÍ GÊxP.
(a) Draw and label the T.S. of dicot leaf.
OR
(b) Write the differences between C3 plants and C4 plants.

38. (A) ›]Úì P®³Ûì ©»º £s¦PøÍ GÊxP. H÷uÝ® J¸ ©»›ß ©»º
Áøµ£h® Áøµ¢x Auß ©»º Áõ´£õmøh GÊxP.
AÀ-»-x
(B) Bo ÷Á›ß E¸©õØÓzvß ÁøPPøÍ GkzxUPõmkhß ÂÁ›UPÄ®.
(a) Write the floral characters of Ricinus communis. Draw any one of the floral diagram
and write its floral formula.
OR
(b) Explain the tap root modifications with examples.

-o0o-

A

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