Tamil Nadu 11th Std Model Question Paper Botany

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No. of Printed Pages : 11
3432 (NS)
!3432NSIstYearBotany! £vÄ Gs
Register Number

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 AøÓU
PsPõo¨£õÍ›h® EhÚi¯õPz öu›ÂUPÄ®.
(2) }»® AÀ»x P¸¨¦ ø©°øÚ ©mk÷© GÊxÁuØS¨ £¯ß£kzu
÷Ásk®. £h[PÒ ÁøµÁuØS®, AiU÷PõikÁuØS® 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

3432 (NS) 2

1. }»¨-£-_® £õ-]-P-÷Íõk öuõ-hº-¦-øh¯ \›-¯õÚ TØÖ Gx ?
(A) L¦-÷Íõ-›-i-¯ß uµ-\® Põ-n¨-£-k-Q-Ó-x
(B) |Pº-Á-uØ-PõÚ EÖ¨-¦-PÒ CÀ-ø»
(C) ö\À-_-Á-›À ö\À-¾-÷»õì Põ-n¨-£-k-Q-Ó-x
(D) Eh-»z-øua _ØÔ ª³-]-÷»ä Põ-n¨-£-k-ÁvÀø»
The correct statement regarding Blue Green Algae is :

(a) Presence of floridean starch

(b) Lack of motile structures

(c) Presence of cellulose in cell wall

(d) Absence of mucilage around the thallus

2. J¸ Bg-]-÷¯õì-ö£º® uõ-Á-µz-vß JØ-øÓ-©-i¯ S÷µõ-÷©õ-÷\õ® GsoUøP
14 GÛÀ Auß P¸-Ås v_-ÂÀ EÒÍ S÷µõ-÷©õ-÷\õ® Gs-oUøP :

(A) 28 (B) 7 (C) 14 (D) 42
The haploid number of chromosome for an angiosperm is 14, the number of chromosome
in its endosperm would be :

(a) 28 (b) 7 (c) 14 (d) 42

3. öÁU-êÀ-»› Cu-Ç-ø©Ä C¢-uU Sk®-£z-vß £s-£õ-S® :
(A) ¤µõ-êU-÷P-] (B) L÷£-÷£-ê
(C) -Bìm-÷µ-ê (D) ö\õ-»õ-÷Ú-]
Vexillary aestivation is characteristic of the family :

(a) Brassicaceae (b) Fabaceae

(c) Asteraceae (d) Solanaceae

3 3432 (NS)

4. ¤øµ-÷¯õ-L-¤À-»®, h¯õì-÷Põ-›-¯õ & GuØS Gkz-xU-Põm-k ?
(A) us-k-ö©õmk, Cø»-ö©õm-k
(B) Cø»-ö©õmk, ~Û-ö©õm-k
(C) Cø»-ö©õmk, us-k-ö©õm-k
(D) us-k-ö©õmk, ~Û-ö©õm-k
Bryophyllum and Dioscorea are examples for :

(a) Cauline bud, foliar bud

(b) Foliar bud, apical bud

(c) Foliar bud, cauline bud

(d) Cauline bud, apical bud

5. J¸ ©g-\-›-°À ©»º-PÒ £U-P-Áõm-iÀ Ai •uÀ ~Û ÷|õU-Q¯ Á›-ø\-°À
Aø©¢-v-¸¢-uõÀ, CÍ®-ö©õmk :
(A) G[-S-ª-¸U-S® (B) As-ø©-°-¼-¸U-S®
(C) ÷\´-ø©-°-¼-¸U-S® (D) Cøha-ö\-¸-P¨-£m-i-¸U-S®
In an inflorescence where flowers are borne laterally in an acropetal succession the
position of the youngest floral bud shall be :

(a) Anywhere (b) Proximal

(c) Distal (d) Intercalary

6. Põ-ª-÷»õ PõÀâ Gß-£-Áº Em-P-¸-ÂØS A¸-P-ø©¢u Áø» ¤ß-ÚÀ Ái-Â-¾ÒÍ
CøÇ-P-øÍ __________ Bsk Ps-h-Ô¢-uõº.
(A) 1899 (B) 1896 (C) 1897 (D) 1898
In ________, Camillo Golgi visualized a netlike reticulum of fibrils near the nucleus,
were named as Golgi bodies.

(a) 1899 (b) 1896 (c) 1897 (d) 1898

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3432 (NS) 4

7. £» ö\À- P - Î ß £o- P Ò JÊ[- P õ- P - Ä ® ©Ø- Ö ® ø©m- h õm- i U ö\À- £ - S ¨- ¦
C¸¢-uõ-¾® Th CøÁ-P-øͨ ö£Ø-Ô-¸¨-£-vÀø» :
(A) Po-P[-PÒ (B) ¤Íõì-©õ \Æ-Ä
(C) ø\m-÷hõì-öP-¼m-hß (D) ø©m-÷hõ-Põs-i-›-¯õ
Many cells function properly and divide mitotically even though they do not have :
(a) Plastids (b) Plasma membrane
(c) Cytoskeleton (d) Mitochondria

8. __________ ""µ]® Aa]À Aø©¢u ø\®PÒ'' GßÖ AøÇUP¨£kQÓx.

(A) vº\ì (B) ^Úõ¢v¯®
(C) øí£¢÷uõi¯® (D) öÁºmi]»õìhº
________ is called ‘Raceme of Cymes’.
(a) Thyrsus (b) Coenanthium
(c) Hypanthodium (d) Verticillaster

9. ÂøuPÒ, ©Pµ¢uzyÒPÒ ©ØÖ® P¸UPÒ __________ öÁ¨£{ø»°À
Em£kzv ÷\ªzx øÁzv¸UP •i²®.
(A) −1008C (B) −1968C (C) 1968C (D) −1808C
Seeds, pollen grains and embryos can be stored at ________ temperature.
(a) −1008C (b) −1968C (c) 1968C (d) −1808C

10. C3 _ÇØ]°À ~øDz® JÆöÁõ¸ CO2 ‰»UTÖPÐUS® ÷uøÁ¨£k® ATP
©ØÖ® NADPH GsoUøP :
(A) 3 ATP + 3 NADPH (B) 2 ATP + 2 NADPH
(C) 2 ATP + 3 NADPH (D) 3 ATP + 2 NADPH
For every CO2 molecule entering the C3 cycle, the number of ATP and NADPH required :
(a) 3 ATP + 3 NADPH (b) 2 ATP + 2 NADPH
(c) 2 ATP + 3 NADPH (d) 3 ATP + 2 NADPH

5 3432 (NS)

11. ÁÇUP©õPU S¨¤ uUøP Gv¼¸¢x u¯õ›UP¨£kQÓx ?
(A) ÁõìS»U ÷P®¤¯® (B) Lö£À»®
(C) Lö£À÷»õöáß (D) ø\»®
The common bottle cork is a product of :

(a) Vascular cambium (b) Phellem

(c) Phellogen (d) Xylem

12. C¸Âøu°ø»z usiÀ ÁõìS»U PØøÓ°¼¸¢x Cø» CÊøÁ
}miUP¨£k® ö£õÊx, Cø» |µ®¤ß ÁõìS»z v_UPÒ GÆÁõÖ Aø©¢x
C¸US® ?
(A) L¦÷Íõ¯® ø\»zøu `Ì¢v¸US®.
(B) ø\»® ÷©Ø¦Ózv¾® L¦÷Íõ¯® R̦Ózv¾® C¸US®.
(C) L¦÷Íõ¯® ÷©À¦Ózv¾® ø\»® R̦Ózv¾® C¸US®.
(D) ø\»® L¦÷Íõ¯zøu `Ì¢v¸US®.
When a leaf trace extends from a vascular bundle in a dicot stem, what would be the
arrangement of vascular tissues in the veins of the leaf ?

(a) Phloem would encircle the xylem.

(b) Xylem would be on top and the phloem at the bottom.

(c) Phloem would be on top and the xylem at the bottom.

(d) Xylem would encircle the phloem.

13. Aö©›UP ö\U÷Põ¯õöhsmµõß ©µzvß Á¯x HÓzuõÇ __________
BskPÒ BS®.
(A) 2500 (B) 4500 (C) 5500 (D) 3500
The age of American Sequoiadendron tree is about ________ years.

(a) 2500 (b) 4500 (c) 5500 (d) 3500

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3432 (NS) 6

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

15. |m\zvµ CøǯØÓ £S¨¦ ø©mhõ]ì _________ &ß ]Ó¨¦¨ £s¦.
(A) AøÚzx E°¸ÒÍ E°›Ú[PÒ
(B) RÌ{ø» »[SPÒ
(C) E¯º{ø» »[SPÒ
(D) E¯º{ø»z uõÁµ[PÒ
Anastral mitosis is the characteristic feature of :
(a) All living organisms
(b) Lower animals
(c) Higher animals
(d) Higher plants

£Sv & II / PART - II
SÔ¨¦ : GøÁ÷¯Ý® BÖ ÂÚõUPÐUS Âøh¯ÎUPÄ®. ÂÚõ Gs 24 &US
Psi¨£õP Âøh¯ÎUPÄ®. 6x2=12

Note : Answer any six questions. Question Number 24 is compulsory.

16. BºUQ £õUj›¯[PÒ GßÓõÀ GßÚ ? £õUj›¯[PÍõÀ uõÁµ[PÐUS
EshõS® ÷|õ´PÒ HuõÁx CµsiøÚ GÊxP.
What is Archaebacteria ? Name any two bacterial plant diseases.

17. ¦÷µõm÷hõ¤Íõ\ ÷Põm£õmøhU TÖP.
State the protoplasm theory.

7 3432 (NS)

18. Pºiì, }µõ¨÷£õUS Gߣx J¸ ""÷uøÁ¯õÚ wø©'' GÚ TÓU Põµn®
¯õx ?
Why Curtis stated transpiration as a “necessary evil” ? Give reason.

19. ÷£õÀi[ & Áøµ¯ÖUPÄ®.
Define Bolting.

20. uͨö£õ¸Ò £õ죛Pµn® GßÓõÀ GßÚ ?
What is substrate phosphorylation ?

21. öíº÷£›¯zvß £¯ßPÒ H÷uÝ® |õßQøÚ GÊxP.
Write any four uses of herbarium.

22. Bg]÷¯õìö£º®PÐUS® â®÷Úõìö£º®PÐUS® Cøh÷¯²ÒÍ
H÷uÝ® |õßS ÷ÁÖ£õkPøÍ GÊxP.
Write any four differences between Gymnosperms and Angiosperms.

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

24. \x¨¦ {»z uõÁµ[PÒ, E¨¦}›À Á͵ C¯¾©õ ? Eß Âøhø¯
ÂÁõvUPÄ®.
Can Mangrove trees grow in salt water ? Justify your answer.

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3432 (NS) 8

£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 questions. Question Number 33 is compulsory.

25. (A) ÷©UÚ÷hõ÷\õ®PÒ GßÓõÀ GßÚ ?
(B) L¤®›ö¯ (Fimbriae) GßÓõÀ GßÚ ? GkzxUPõmk u¸P.
(a) What are Magnetosomes ?
(b) What are fimbriae ? Give an example.

26. ¦÷µõm÷hõìjÀ £ØÔ SÔ¨¦ ÁøµP. ÷©¾® Auß ÁøPPøÍU TÖP.
Write about protostele and its types.

27. CUP£õÚõ GßÓõÀ GßÚ ?
What is Ikebana ?

28. (A) ÷Á›ß £SvPøͨ £h® Áøµ¢x £õP® SÔ.
(B) ÷Á›ß £s¦PÒ CµsiøÚU TÖP.
(a) Draw and label the parts of regions of root.
(b) Write any two characteristic feature of root system.

29. RÌUPsh Áͺ]øu ©õØÓ¨ ö£õ¸mPÐUS GkzxUPõmkPÒ u¸P.
(A) Aª÷Úõ Aª»® (B) P›© Aª»® (C) |a_PÒ
(D) ö»UißPÒ (E) ©¸¢x¨ö£õ¸mPÒ
(F) AÀP»õ´kPÒ
Give examples for the following metabolites :
(a) Amino acid (b) Organic acid (c) Toxins
(d) Lectins (e) Drugs (f) Alkaloids

9 3432 (NS)

30. S÷µõ÷©õ÷\õªß Aø©¨ø£ £h® Áøµ¢x £õP® SÔUPÄ®.
Draw the structure of chromosome and label its parts.

31. ø|m÷µmhõuÀ {PÌÂÀ ø|m÷µõ÷\õ÷©õÚõì ©ØÖ® ø|m÷µõ£õUh›ß
£[S ¯õx ?
Write the role of Nitrosomonas and Nitrobacter during Nitrification process.

32. Qµõßì EÒÍø©¨¦ GßÓõÀ GßÚ ?
What is Kranz anatomy ?

33. ö\À _Áõ]zu¼ß {ø»PÒ, uõÁµ[PÒ ©ØÖ® »[SPÒ, Cµsi¾® J÷µ
©õv›¯õP EÒÍøÁ¯õ ? Eß Âøhø¯ ÂÁõvUPÄ®.
State whether cellular respiration stages are similar in both plants and animals ? Justify
your answer.

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

Note : Answer all the questions.

34. (A) QøÍm÷hõ›¯õ öhº÷Úæ¯õ ©»›ß £s¦PøÍ Pø»aö\õØPÍõÀ
ÂÁ›UPÄ®.
AÀ»x
(B) ø©mhõ]ì]ß ]Ó¨¤¯À¦PøÍ GÊxP.
(a) Describe the flower of Clitoria ternatea in technical terms.

OR

(b) Write the significance of Mitosis.

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3432 (NS) 10

35. (A) DNA &Âß Aø©¨ø£ ÂÁ›UPÄ®.
AÀ»x
(B) C¸Âøu°ø»z uõÁµ usiß Cµshõ® {ø» Áͺa]US®,
C¸Âøu°ø» uõÁµ ÷Á›ß Cµshõ® {ø» Áͺa]US®
Cøh÷¯¯õÚ ÷ÁÖ£õmiøÚ GÊxP.
(a) Explain the structure of DNA.

OR

(b) Write the differences between secondary growth in Dicot stem and Dicot root.

36. (A) ø\m÷hõøPÛß Áõ̯À ÂøÍÄPÒ ¯õøÁ ?
AÀ»x
(B) ¤Íõì©õ ]øuÄ Áøµ¯Ö ©ØÖ® Cuß •UQ¯zxÁzøu GÊxP.
(a) Write the physiological effects of Cytokinin.

OR

(b) Explain plasmolysis and write its significance.

37. (A) C3 uõÁµ[PÒ ©ØÖ® C4 uõÁµ[PÎß ÷ÁÖ£õkPøÍ GÊxP.
AÀ»x
(B) ©soÀ»õ Áͺ¨¦ •øÓø¯ £h® Áøµ¢x ÂÍUSP.
(a) Write the differences between C3 plants and C4 plants.

OR

(b) Write an account on Hydroponics with its diagram.

11 3432 (NS)

38. (A) C¸Âøu°ø» Cø»°ß EÒÍø©¨ø£ ÂÁ›UPÄ®.
AÀ»x
(B) SÐU÷Põì Eøh²® ©õØÖÁȨ£õøu°ß ö£¯º GßÚ ? AvÀ
|øhö£Ö® ÂøÚPøÍ ÂÁ›UPÄ®.
(a) Explain the anatomy of Dicot Leaf.
OR
(b) What is the name of alternate way of glucose breakdown ? Explain the process
involved in it.

-o0o-

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