TN 11th Question Paper 2024 Biology

TN PUBLIC EXAM

QUESTION
PAPER
2024

No. of Printed Pages : 12
7627
£vÄ Gs
A Register Number

!7627IstYearBiology! PART - III
E°›¯À / BIOLOGY
( 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®
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.

SÔ¨¦ : £Sv&I (E°›&uõÁµÂ¯À), £Sv&II (E°›&»[Q¯À) uÛzuÛ ÂøhzuõÎÀ
Âøh¯ÎUPÄ®.
Note : Candidate should answer Part-I (Bio-Botany) & Part-II (Bio-Zoology) in separate
answer books.
£Sv - I (E°›&uõÁµÂ¯À) / PART - I (BIO-BOTANY)
(©v¨ö£sPÒ : 35) / (Marks : 35)

¤›Ä - 1 / SECTION - 1

SÔ¨¦ : (i) AøÚzx ÂÚõUPÐUS® Âøh¯ÎUPÄ®. 8x1=8

(ii) öPõkUP¨£mkÒÍ |õßS ©õØÖ ÂøhPÎÀ ªPÄ® Hئøh¯
Âøhø¯z ÷uº¢öukzx 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

7627 2

1. P¨¤°ß Âmh® 12 A[S»®, SÔ•ÒÎß }Í® 10 A[S»® ©ØÖ® SÔ•Ò
|Pº¢u yµ® 5 A[S»©õP C¸¢uõÀ, uõÁµzvß Esø©¯õÚ }Ò Áͺa]°øÚ
PshԯĮ.

(A) 12 A[S»® (B) 3 A[S»® (C) 30 A[S»® (D) 6 A[S»®
If the diameter of the pulley is 12 inches, length of pointer is 10 inches and distance travelled
by pointer is 5 inches, calculate the actual growth in length of plant :

(a) 12 inches (b) 3 inches (c) 30 inches (d) 6 inches

2. vµÒ PÛ __________ ¼¸¢x E¸ÁõQÓx.

(A) £» `»P Cø» `»P¨ø£

(B) £» Cøn¢u `»P Cø» `»P¨ø£

(C) •Ê ©g\›

(D) £» Cøn¯õa `»P Cø» `»P¨ø£
Aggregate fruit develops from :

(a) Multicarpellary ovary

(b) Multicarpellary, syncarpous ovary

(c) Whole inflorescence

(d) Multicarpellary, apocarpous ovary

3. «sk® Ch®ö£¯µõu uÛ©® :

(A) PõÀ]¯® (B) £õ죵ì (C) ø|mµáß (D) ö£õmhõ]¯®
The element which is not remobilized :

(a) Calcium (b) Phosphorus (c) Nitrogen (d) Potassium

A

3 7627

4. RÌUPsh G¢u ö\À ~sqÖ¨¦ ©ÛuÛß ÷uõØÓzøu £vöÁk¨¦ ö\´¯
EuÄQÓx ?
(A) £_[PoP® (B) ÷PõÀøP Eh»®
(C) øµ÷£õ÷\õ® (D) ø©m÷hõPõsi›¯õ
Which one of the following cell organelles is used to trace human origins ?

(a) Chloroplast (b) Golgi body

(c) Ribosome (d) Mitochondria

5. RÌUPshÁØÖÒ G¢u BÀPõÁõÚx PÈÄ}º _zvP›zu¼À £¯ß£kQÓx ?
(A) »õª÷Ú›¯õ (B) Bì÷Põ¤À»®
(C) S÷ÍõöµÀ»õ (D) ¤²Pì
Which one of the following algae is used for sewage treatment ?

(a) Laminaria (b) Ascophyllum

(c) Chlorella (d) Fucus

6. C¸Âzvø» uõÁµ[PÎÀ Jmk¨÷£õkuÀ öÁØÔPµ©õP EÒÍx. BÚõÀ J¸
Âzvø»z uõÁµ[PÎÀ AÆÁõÖ CÀø». HöÚßÓõÀ, C¸Âzvø» uõÁµ[PÎÀ,
(A) Áøͯ©õP ÁõìS»õº PØøÓPÒ Aø©¢v¸¨£x
(B) PõºU ÷P®¤¯® Aø©¢v¸¨£x
(C) ø\»U SÇõ´ TÖPÒ J¸•øÚ°À C¸¢x Akzu •øÚ Áøµ Cøn¢x
Aø©¢v¸¨£x
(D) Cµshõ® {ø» Áͺa]UPõÚ ÷P®¤¯® Aø©¢v¸¨£x
Grafting is successful in Dicots but not in Monocots because the dicots have :

(a) Vascular bundles arranged in a ring

(b) Cork Cambium

(c) Vessels with elements arranged end to end

(d) Cambium for secondary growth

A [ v¸¨¦P / Turn over

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7. ÁÓsh {»z uõÁµ©õÚ J£ßæ¯õ&ÂÀ GÆÁøP }µõ¨ ÷£õUS \õzv¯® ?

(A) ö»siö\À }µõ¨ ÷£õUS

(B) Q³miQÒ }µõ¨ ÷£õUS

(C) Cø»zxøÍ }µõ¨ ÷£õUS

(D) ÷©ØTÔ¯ AøÚzx®

What type of transpiration is possible in the Xerophyte Opuntia ?

(a) Lenticular

(b) Cuticular

(c) Stomatal

(d) All the above

8. JÎa÷\ºUøP JÎÂøÚ°ß \›¯õÚ TØÔøÚU PshÔP.

(A) PS I &ß ÂøÚ ø©¯©õÚ £aø\¯® ‘a’ &°ß JÎ Dº¨¦ Ea\® 680 nm BS®.

(B) JÎ\õº }º £S¨¦ PS I Ehß öuõhº¦øh¯x.

(C) PS II &ß ÂøÚ ø©¯©õÚ £aø\¯® ‘a’ &ß JÎ Dº¨¦ Ea\® 700 nm BS®.

(D) PS I ©ØÖ® PS II BQ¯øÁ NADPH+H+E¸Áõu¼À £[S ö£ÖQÓx.

Identify the true statement regarding light reaction of photosynthesis.

(a) The reaction center of PS I is chlorophyll ‘a’ with absorption peak at 680 nm

(b) Photolysis of water is associated with PS I

(c) The reaction center of PS II is chlorophyll ‘a’ with absorption peak at 700 nm

(d) PS I and PS II involved in the formation of NADPH+H+

A

5 7627

¤›Ä & 2 / SECTION - 2

SÔ¨¦ : GøÁ÷¯Ý® |õßS ÂÚõUPÐUS Âøh-¯-ÎU-P-Ä®. 4x2=8

Note : Answer any four questions.

9. ©µÁ¯v¯À ©ØÖ® ©µUPõ»{ø»°¯À – ÷ÁÖ£kzxP.
Differentiate - dendrochronology and dendroclimatology.

10. øÁµêß E°µØÓ £s¦PÒ H÷uÝ® CµsiøÚ GÊxP.
Write any two non-living characters of virus.

11. "]Úõ¨]ì' – Áøµ¯ÖUPÄ®.
Define - ‘Synapsis’.

12. \øu¨£ØÖÒÍ uõÁµ[PÎÀ _Áõ\ DÄ ©v¨¦ §ä¯®. Hß ?
Respiratory quotient is zero in succulent plants. Why ?

13. RÌUPshÁØÔØS Pø»aö\õØPÒ u¸P.
(A) J¸ ÁÍ©ØÓ ©Pµ¢u uõÒ
(B) ©Pµ¢u uõÒPÒ J¸ PmhõP Cøn¢u ©Pµ¢u uõÒPÒ
Give the technical terms for the following :

(a) A sterile stamen

(b) Stamens are united in one bundle.

14. }›¯À vÓøÚU Pmk¨£kzx® TÖPÒ ¯õøÁ ?
What are the parameters which control Water Potential ?

A [ v¸¨¦P / Turn over

7627 6

¤›Ä & 3 / SECTION - 3
SÔ¨¦ : GøÁ÷¯Ý® ‰ßÖ ÂÚõUPÐUS Âøh-¯-ÎU-P-Ä®. ÂÚõ Gs 19 &US
Pmhõ¯©õP Âøh¯ÎUPÄ®.
3x3=9
Note : Answer any three questions. Question No. 19 is Compulsory.

15. }º FhP Áͺ¨¦ AÀ»x ©soÀ»õ Áͺ¨¦ £ØÔ ]Ö SÔ¨¦ GÊxP.
Write short notes about Hydroponics or soilless culture.

16. ÷Á›ß £SvPøÍ £h® Áøµ¢x £õP[PøÍU SÔUPÄ®.
Draw and label the parts of regions of root.

17. JØøÓ©i¯ ÷P«m E°› ÁõÌUøPa _Çø» Cµmøh©i¯ ÷P«m E°› ÁõÌUøPa
_Ǽ¼¸¢x ÷ÁÖ£kzxP.
Differentiate - haplontic and diplontic life cycle.

18. }›ß £s¦PøÍ GÊxP.
Write the properties of water.

19. EmP¸Âß £oPøÍ GÊxP.
Write the functions of Nucleus.

¤›Ä & 4 / SECTION - 4
SÔ¨¦ : AøÚzx ÂÚõUPÐUS® Âøh-¯-ÎU-P-Ä®. 2x5=10
Note : Answer all the questions.
20. (A) AÀ¼¯® ^£õ uõÁµzøu Pø»aö\õØPÍõÀ ÂÁ›UPÄ®.
AÀ-»-x
(B) DNA &Âß ]Ó¨¤¯À¦PøÍ GÊxP.
(a) Write the botanical description of Allium cepa.
OR
(b) Write the characteristic features of DNA.

21. (A) Qµ¨ì _ÇØ]°øÚ ÂÍUSP. (ÂÍUP® (AÀ»x) Áøµ£h®)
AÀ-»-x
(B) ø»UPßPÎß ö£õx¨£s¦PøÍ GÊxP.
(a) Explain the Krebs Cycle. (Explanation (or) Flow Chart)
OR
(b) Give a general account on lichens.

A

7 7627

£Sv & II (E°›&»[Q¯À) / PART - II (BIO-ZOOLOGY)
(©v¨ö£sPÒ : 35) / (Marks : 35)
¤›-Ä & 1 / SECTION - 1
SÔ¨¦ : (i) AøÚzx ÂÚõUPÐUS® Âøh¯ÎUPÄ®. 8x1=8
(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.

1. QÍõ÷hõQµõ® Gߣx RÌUPsh G¢u £s¦PøÍU öPõskÒÍx ?
(A) ÁøP¨£õmi¯À ©ØÖ® öuõS¨£ø©Â¯À
(B) EhØö\¯¼¯À ©ØÖ® E°º ÷Áv°¯À
(C) ö\À ©ØÖ® v_¯À
(D) £›nõ© ©ØÖ® ©µ¦ÁÈ
Which of the following characters does a cladogram have ?
(a) Taxonomic and Systematic
(b) Physiological and Biochemical
(c) Cell and Histology
(d) Evolutionary and Phylogenetic

2. E°º¨¦zvÓß Gߣx :
(A) Gg]¯ öPõÒÍÍÄ + öÁÎa_Áõ\ ÷\ª¨¦U öPõÒÍÍÄ
(B) ‰a_UPõØÖ AÍÄ + Em_Áõ\ ÷\ª¨¦U öPõÒÍÍÄ
(C) ‰a_UPõØÖ AÍÄ + Em_Áõ\ ÷\ª¨¦U öPõÒÍÍÄ +
öÁÎa_Áõ\ ÷\ª¨¦U öPõÒÍÍÄ
(D) ‰a_UPõØÖ AÍÄ + öÁÎa_Áõ\ ÷\ª¨¦U öPõÒÍÍÄ
Vital capacity is :
(a) Residual Volume (RV) + Expiratory Reserve Volume (ERV)
(b) Tidal Volume (TV) + Inspiratory Reserve Volume (IRV)
(c) Tidal Volume (TV) + Inspiratory Reserve Volume (IRV) +
Expiratory Reserve Volume (ERV)
(d) Tidal Volume (TV) + Expiratory Reserve Volume (ERV)

A [ v¸¨¦P / Turn over

7627 8

3. 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

4. ÷£õ÷hõø\mkPÒ Põn¨£kÁx :
(A) ö|L¨µõÛß PÊzx¨ £Sv°À
(B) ö£Í©õÛß Qsn öÁÎa_Á›À
(C) QÍõ©¸»õº Cµzu ~s|õÍ[PÎß _Á›À
(D) ö£Í©õÛß Qsn Em_Á›À
Podocytes are the cells present on the :
(a) Neck of nephron
(b) Outer wall of Bowman’s capsule
(c) Wall of glomerular capillaries
(d) Inner wall of Bowman’s capsule

5. A÷¯õiß P»¢u E¨¦ __________ Iz ukzu¼À •UQ¯¨ £[PõØÖQÓx.
(A) Põ´hº (B) ›UöPmì
(C) AU÷µõö©Põ¼ (D) ìPºÂ
Iodised salt is essential to prevent :
(a) goitre (b) rickets
(c) acromegaly (d) scurvy

A

9 7627

6. Enºa] ‰øÍ GÚ AøÇUP¨£kÁx Gx ?

(A) øí¨÷£õu»õ©ì (B) •SÍ®
(C) Põº¨÷£õµõ SÁõm›öáªÚõ (D) ¼®¤U ©sh»®
Which is called as “Emotional brain” ?

(a) Hypothalamus (b) Medulla oblongata

(c) Corpora quadrigemina (d) Limbic system

7. TØÖ : P»Â¨£Ó¨¦ J¸ Cµõoz ÷uܲhß £» Bs ÷uÜUPÒ £Ó¢x
ö\À¾® J¸ ]Ó¨£õÚ £ÓzuÀ {PÌÄ BS®.
Põµn® : Cµõoz ÷uÜ Lö£÷µõ÷©õß GÝ® íõº÷©õß ÷Áv¨ö£õ¸øÍ
EØ£zv ö\´QßÓx. AÆÂhzvÀ EÒÍ Bs ÷uÜUPÒ
Lö£÷µõ÷©õÚõÀ PÁµ¨£mk ¦nºa] |øhö£ÖQßÓx.
(A) TØÖ® Põµn•® \› ©ØÖ® \›¯õP öuõhº¦£kzu¨£mkÒÍx
(B) TØÖ® Põµn•® \› BÚõÀ JßÖhß JßÖ \›¯õP öuõhº¦£kzu¨£h&
ÂÀø»
(C) TØÖ® Põµn•® uÁÖ ©ØÖ® \›¯õP öuõhº¦£kzu¨£hÂÀø»
(D) TØÖ® Põµn•® uÁÖ BÚõÀ \›¯õP öuõhº¦£kzu¨£mkÒÍÚ
Assertion : Nuptial flight is a unique flight taken by the queen bee followed by several
drones.

Reason : The queen bee produces a hormonal chemical substance called pheromone.
The drones in that area are attracted to the pheromone and then mating
takes place.

(a) Assertion and reason are correct and related.

(b) Assertion and reason are correct but not related.

(c) Assertion and reason are incorrect and not related.

(d) Assertion and reason are incorrect but related.

A [ v¸¨¦P / Turn over

7627 10

8. Pµ¨£õß §a]°ß £õºøÁ°ß ÁøP :

(A) ö©õø\U

(B) •¨£›©õn®

(C) Pµ¨£õß §a]°À £õºøÁ Põn¨£kÁvÀø»

(D) C¸ £›©õn®

The type of vision in cockroach is :

(a) Mosaic

(b) Three dimensional

(c) Cockroach does not have vision

(d) Two dimensional

¤›Ä & 2 / SECTION - 2

SÔ¨¦ : GøÁ÷¯Ý® |õßS ÂÚõUPÐUS Âøh-¯-ÎU-P-Ä®. 4x2=8

Note : Answer any four questions.

9. öhmhÛ GÆÁõÖ HØ£kQÓx ?

How is tetany caused ?

10. uÁøÍ°À Põn¨£k® _Áõ\ •øÓPøÍ GÊxP.

Write the types of respiration seen in frog.

A

11 7627

11. £¯ß u¸® £õUj›¯õøÁ ÷|õ³UQ £õUj›¯õ¼¸¢x ÷ÁÖ£kzxP.
Differentiate between probiotics and pathogenic bacteria.

12. PõØÓõÚx |õ]°¼¸¢x ‰a_U SÇõø¯ Aøh¯¨ £» EÖ¨¦PøÍU Ph¢x
ö\ÀQÓx. AÆÄÖ¨¦PÎß ö£¯ºPøÍ Á›ø\¨£kzxP.
Air, moving from the nose to the trachea, passes through a number of structures. List the
order of the structures.

13. ©ÛuÛß £Ø`zvµzøu u¸P.
Write the dental formula of human.

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

¤›Ä & 3 / SECTION - 3
SÔ¨¦ : GøÁ÷¯Ý® ‰ßÖ ÂÚõUPÐUS Âøh-¯-ÎU-P-Ä®. ÂÚõ Gs 19 &US
Pmhõ¯©õP Âøh¯ÎUPÄ®. 3x3=9

Note : Answer any three questions. Question No. 19 is Compulsory.

15. öÁÒøÍ Ai¨÷£õì v_øÁ £Ê¨¦ Ai¨÷£õì v_¼¸¢x ÷ÁÖ£kzxP.
Differentiate white adipose tissue from brown adipose tissue.

16. |»©õÚ PõÀ|øhPøÍ GÆÁõÖ PshÔ¯»õ® ? GøÁ÷¯Ý® Cµsk PõÀ|øh
÷|õ´PøÍU SÔ¨¤kP.
How will you identify Healthy Cattle ? Name any two cattle diseases.

17. Cu¯ J¼PÒ GßÓõÀ GßÚ ? AøÁ G¨÷£õx ©ØÖ® G¨£i EshõUP¨&
£kQßÓÚ ?
What are the heart sounds ? When and how are these sounds produced ?

A [ v¸¨¦P / Turn over

7627 12

18. AmŸÚÀ PõºöhUêß AkUSPøͲ® Auß _µ¨¦PøͲ® SÔ¨¤kP.
Name the Layers of Adrenal Cortex and mention their Secretions.

19. FkP»¨¦ Jzuø©ÁõßPøÍ FkP»¨¦ JÊ[Pø©ÁõßPμ¸¢x ÷ÁÖ£kzxP.
Differentiate osmoconformers from osmoregulators.

¤›Ä & 4 / SECTION - 4
SÔ¨¦ : AøÚzx ÂÚõUPÐUS® Âøh-¯-ÎU-P-Ä®. 2x5=10

Note : Answer all the questions.

20. (A) •xS|õqøh¯ »[SPøÍ •xS|õnØÓ Â»[SPÎhª¸¢x ÷ÁÖ£kzxP.
AÀ-»-x
(B) ÷uõ¼À Põn¨£k® Enº÷ÁؤPøÍ ÂÍUSP.
(a) Differentiate the Chordate animals from non-chordate animals.

OR

(b) Explain the sensory receptors present in the skin.

21. (A) _Áõ\ ©sh»zvß £oPÒ ¯õøÁ ?
AÀ-»-x
(B) uø\a _¸UPzvß Á›ø\U Qµ©©õÚ {PÌÄPøÍU TÖP. (\ÖUS CøÇU
÷Põm£õk)
(a) What are the functions of respiratory system ?

OR

(b) Enumerate the schematic presentation of muscle contraction (sliding - filament theory).

-o0o-

A

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