TBJEE 2021 Question Paper - Biology

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2021
Question Paper Series

P

BIOLOGY JB

Time : 45 Minutes Maximum Marks : 120

Total Marks : 120 (4 × 30)

Answer all questions

This Question Paper consists of 12 pages. Each Multiple Choice Question (MCQ)
is provided with four options (A), (B), (C) and (D). Identify the correct option and
darken/fill the corresponding circle (A)/(B)/(C)/(D) with Blue/Black Ballpoint Pen
on the OMR Answer Sheet.

For each question, 4 marks will be awarded for correct answer and for each
wrong answer 1 mark will be deducted.

Τ šøìÅ¥¹ l¡üv¡¹ ƒà*

&Òü šøÅ¥šy[i¡ìt¡ 12 [i¡ ³å[‰t¡ šõË¡à "àìá¡ú šø[t¡[i¡ MCQ-&¹ Îàì= W¡à¹[i¡ δ±à¤¸ l¡üv¡¹ (A), (B), (C) &¤} (D)
ëƒ*Úà "àìá¡ú Î[k¡A¡ l¡üv¡¹[i¡ [>¤¢àW¡> A¡¹ &¤} OMR Answer Sheet-&¹ [>‹¢à[¹t¡ \àÚKàÚ l¡üv¡¹[i¡
(A)/(B)/(C)/(D) >㺠¤à A¡àìºà Ballpoint Pen [ƒìÚ ®¡[t¢¡ A¡¹¡ú

šøìt¡¸A¡ šøìÅ¥¹ Î[k¡A¡ l¡üv¡ì¹¹ \>¸ 4 >´¬¹ ëƒ*Úà Òì¤
&¤} šøìt¡¸A¡ ®å¡º l¡üv¡ì¹¹ \>¸ 1 >´¬¹ A¡ài¡à ™à줡ú

™t¡Û¡o š™¢”z >à ¤ºà Òì¤, t¡t¡Û¡o š™¢”z ë³àÒ¹ Jåºì¤ >à¡

1. Who first proposed the binomial nomenclature system?

(A) Robert Hooke (B) Carolus Linnaeus

(C) Aristotle (D) Robert Brown

1ú [‡šƒ >à³A¡¹o š‡ý¡[t¡[i¡ ëA¡ šø=³ šø¤t¢¡> A¡ì¹>?

(A) ¹¤ài¢¡ ×A¡ (B) A¡¸àì¹àºàÎ [º[>ÚàÎ

(C) "¸à[¹Ð¡i¡º (D) ¹¤ài¢¡ ¤øàl¡ü>

2. The number of capsomeres in the Toabcco mosaic virus capsid is

(A) 3210 (B) 1230

(C) 2130 (D) 2031

2ú ëi¡à¤¸àìA¡à ë³à\àÒüA¡ ®¡àÒü¹àìι A¡¸àš[Îìl¡¡ A¡¸àšìÎà[³Úàì¹¹ Î}J¸à Òº
(A) 3210 (B) 1230

(C) 2130 (D) 2031

3. Teichoic acids are found in the cell walls of

(A) Gram-positive bacteria (B) Gram-negative bacteria

(C) Rhodophyta (D) Bryophyta

3ú i¡àÒüìA¡à[ÚA¡ "¸à[Îl¡ šà*Úà ™àÚ ™à¹ ëA¡àÅšøàW¡ãì¹, ëÎ[i¡ Òº

(A) Køà³-š[\[i¡®¡ ¤¸àA¡ìi¡[¹Úà (B) Køà³-ë>ìK[i¡®¡ ¤¸àA¡ìi¡[¹Úà¡

(C) ëºà[Òt íŤຠ(D) ¤öàìÚàó¡àÒüi¡à

JB—Series P 2

4. Which one of the following is an example of aquatic floating Bryophytes?

(A) Riccia atlantica (B) Pteris vittata

(C) Riccia fluitans (D) Marchantia polymorpha

4ú [>´•[º[Jt¡P¡[º¹ ³ì‹¸ ëA¡à>[i¡ \º\ ®¡àγà> ¤øàìÚàó¡àÒüi¡à¹ l¡üƒàÒ¹o?

(A) Riccia atlantica (B) Pteris vittata

(C) Riccia fluitans (D) Marchantia polymorpha

5. Heart is three-chambered in which of the following classes of animals?

(A) Amphibia (B) Aves

(C) Chondrichthyes (D) Osteichthyes

5ú [>´•[º[Jt¡ ëA¡à>ô ëÅø>ã¹ šøàoã¹ Òꡃ[šr¡ [t¡> šøìA¡àË¡ [¤[ÅÊ¡?

(A) "¸à[´£¡[¤Úà (B) "¸à[®¡Î

(C) A¡>[l¡öA¡[=Î (D) "Î[i¡A¡[=Î

6. When the stamens remain united with petals, then it is called

(A) Epipetalous (B) Episepalous

(C) Gynandrous (D) Synandrous

6ú šå}ƒr¡P¡[º ™J> šàš[Øl¡¹ ÎìU ™åv¡û¡ =àìA¡, t¡J> t¡àìA¡ ¤ºà ÒÚ

(A) ƒººN¥ (B) ¤õ”zºN¥

(C) K®¢¡šyºN¥ (D) ™åv¡û¡šå}ìA¡Å¹
JB—Series P 3 [ P.T.O.

7. Which one of the following is not a type of protostele?

(A) Haplostele (B) Actinostele

(C) Plectostele (D) Atactostele

7ú [>´•[º[Jt¡P¡[º¹ ³ì‹¸ ëA¡à>[i¡ ëšøàìi¡à[С[º¹ šøA¡à¹ì®¡ƒ >Ú?

(A) Ò¸àìšÃà[С[º (B) "¸àA¡[i¡ì>à[С[º

(C) ëšÃìC¡à[С[º (D) "¸ài¡àA¡ìi¡à[С[º

8. Sunken stomata is found in the leaves of

(A) Nerium (B) Lathyrus

(C) Pisum (D) Gloriosa

8ú [>³[ðt¡ šy¹Þøý¡ šà*Úà ™àÚ ë™ šàt¡àÚ, ëÎ[i¡ Òº
(A) Nerium (B) Lathyrus

(C) Pisum (D) Gloriosa

9. Which one of the following statements is not correct?

(A) Maltase converts maltose into glucose

(B) Lipolytic enzymes hydrolyse fats and lipids

(C) Amylase is a proteolytic enzyme

(D) Nuclease causes the hydrolysis of nucleic acid

9ú [>´•[º[Jt¡ l¡ü[v¡û P¡[º¹¡³ì‹¸ ëA¡à>[i¡ Î[k¡A¡ >Ú?

(A) ³ºìi¡\ ³ºìi¡à\ìA¡ NÃåìA¡àì\ š[¹ot¡ A¡ì¹

(B) ºàÒüìšàºàÒü[i¡A¡ l¡ü;ìÎW¡A¡ ó¡¸ài¡ "=¤à [º[šl¡ìA¡ [¤[ÅÃÊ¡ A¡ì¹

(C) "¸à³àÒüìº\ &A¡[i¡ ëšøà[i¡*ºàÒü[i¡A¡ l¡ü;ìÎW¡A¡

(D) [>l¡ü[Aà ìÚ\¡[>l¡ü[Aà A "¸à[Îìl¡¹ [¤ìÅÃÈo Qi¡àÚ

JB—Series P 4

10. The colourless plastids that store starch are called

(A) Amyloplast (B) Elaioplast

(C) Proteinoplast (D) Pheoplast

10ú ë™ ¤o¢Òã> šÃàÎ[i¡l¡¡-& ëŬt¡Î๠Î[e¡t¡ ÒÚ, t¡àìA¡ ¤ìº

(A) "¸à³àÒüìºàšÃàС (B) &ºàÒü*šÃàС

(C) ëšøà[i¡ì>àšÃàС (D) [ó¡ìÚàšÃàС

11. In which organelle the enzyme catalase is found?

(A) Lysosome (B) Peroxisome

(C) Oxysome (D) Quantasome

11ú ëA¡à>ô "Uàoåìt¡ A¡¸ài¡àìº\ l¡ü;ìÎW¡A¡[i¡ šà*Úà ™àÚ?

(A) ºàÒüìÎàì\à³ (B) šà¹[Gì\à³

(C) "[Gì\à³ (D) ëA¡àÚà@i¡àì\à³

12. The enzyme responsible for the conversion of glucose to glucose 6-phosphate is

(A) mutase (B) aldolase

(C) β -ketothiolase (D) hexokinase

12ú NÃåìA¡à\ìA¡ NÃåìA¡à\ 6-ó¡Îìó¡i¡-& š[¹ot¡ A¡ì¹ ë™ l¡ü;ìÎW¡A¡[i¡, ëÎ[i¡ Òº

(A) [³l¡üìi¡\ (B) "¸àºìl¡àìº\

(C) β -[A¡ìi¡à=àìÚàìº\ (D) ëÒìGàA¡àÒüì>\

JB—Series P 5 [ P.T.O.

13. Kranz anatomy is the characteristic feature of

(A) CAM plants (B) C4 plants

(C) C3 plants (D) Both CAM and C3 plants

13ú yû¡àg "¸à>ài¡[³ ™à¹ W¡à[¹[yA¡ í¤[ÅÊ¡¸, ëÎ[i¡ Òº

(A) CAM l¡ü[Š±ƒ (B) C4 l¡ü[Š±ƒ

(C) C3 l¡ü[Š±ƒ (D) CAM &¤} C3 l¡ü®¡Ú l¡ü[Š±ƒ

14. Which one of the following elements is an essential micronutrient for plants?

(A) Nitrogen (B) Potassium

(C) Calcium (D) Boron

14ú [>´•[º[Jt¡ l¡üšàƒà>P¡[º¹ ëA¡à>[i¡ l¡ü[Š±ìƒ¹ šøìÚà\>ãÚ ³àÒüìyû¡à[>l¡ü[i¡öìÚ@i¡?

(A) >àÒüìi¡öàì\> (B) ši¡à[ÅÚà³

(C) A¡¸àº[ÎÚà³ (D) ë¤à¹>

15. Which of the following cells are not the secretory cells of the stomach?

(A) Mucous cells (B) Parietal cells

(C) Stem cells (D) Peptic cells

15ú [>´•[º[Jt¡ ëA¡àÅP¡[º¹ ëA¡à>[i šàA¡Ñ‚ºã¹ [>Ñ÷à–¤ã ëA¡àÅ >Ú?¡

(A) [³l¡üA¡àÎ ëA¡àÅ (B) š¸à¹àÒüi¡àº ëA¡àÅ

(C) ëС³ ëA¡àÅ (D) ëšš[i¡A¡ ëA¡àÅ
JB—Series P 6

16. The enzyme responsible for conversion of trypsinogen to trypsin is

(A) enteropeptidase (B) amylase

(C) lipase (D) dehydrogenase

16ú [i¡öš[Îì>àì\>ìA¡ Î[yû¡Ú [i¡öš[Îì> š[¹ot¡ A¡¹à¹ \>¸ ƒàÚã l¡ü;ìÎW¡A¡[i¡ Òº

(A) &@i¡àì¹àìšši¡àÒüìl¡\ (B) "¸à³àÒüìº\

(C) ºàÒüìš\ (D) [l¡ÒàÒüìl¡öà[\ì>\

17. The process of development of fruit without fertilization is called

(A) apomixis (B) parthenocarpy

(C) polyembryony (D) pleiotropy

17ú ë™ š‡ý¡[t¡ìt¡ [>ìÈA¡ áàØl¡à ó¡º l¡ü;šÄ ÒÚ, t¡àìA¡ ¤ìº

(A) "¸àìšà[³[GÎ (B) šàì=¢ì>àA¡à[š¢

(C) š[º&³¤øàìÚà[> (D) [šÃ*i¡ö[š

18. Ringelmann scale is used to measure the density of which one of the following?

(A) Fog (B) Polluted water

(C) Rain (D) Smoke

18ú [¹ìUº³¸à> ëÑHþº [>´•[º[Jt¡P¡[º¹ ëA¡à>[i¡¹ Q>â« ³àšìt¡ ¤¸¤Ò๠A¡¹à ÒÚ?

(A) Aå¡ÚàÅà (B) ƒè[Èt¡ \º

(C) ¤õ[Ê¡ (D) ë‹òàÚà
JB—Series P 7 [ P.T.O.

19. Nanda Devi Biosphere Reserve is located in the State of

(A) Kerala (B) Uttarakhand

(C) Karnataka (D) Tamil Nadu

19ú >@ƒà샤㠤àìÚà[Ñ£¡Ú๠[¹\஢¡ ë™ ¹àì\¸ "¤[Ñ‚t¡, ëÎ[i¡ Òº

(A) ëA¡¹àºà (B) l¡üv¡¹àJ“¡

(C) A¡o¢ài¡A¡ (D) t¡à[³º>àØl¡æ

20. Royal Jelly is secreted by which of the following honeybees?

(A) Queen honeybees (B) Worker honeybees

(C) Drone honeybees (D) Both queen and drone honeybees

20ú ¹ìÚº ë\[º [>´•[º[Jt¡ ëA¡à>ô ë³ï³à[á ‡à¹à Û¡[¹t¡ ÒÚ?

(A) ¹à>ã ë³ï³à[á (B) Åø[³A¡ ë³ï³à[á

(C) šå¹ç¡È ë³ï³à[á (D) l¡ü®¡Ú ¹à>ã * šå¹ç¡È ë³ï³à[á

21. Which one of the following is an example of monoestrous animal?

(A) Rat (B) Horse

(C) Cat (D) Dog

21ú [>´•[º[Jt¡P¡[º¹ ³ì‹¸ ëA¡à>[i¡ &A¡ ˜¡tå¡W¡yû¡ã šøàoã¹ l¡üƒàÒ¹o?

(A) Òòüƒå¹¡ (B) ëQàØl¡à

(C) [¤Øl¡àº (D) Aå¡A塹

JB—Series P 8

22. Semiconservative replication of DNA was discovered by

(A) Pasteur and Jenner (B) Meselson and Stahl

(C) Krebs and Khorana (D) Harvey and Berg

22ú DNA "oå¹ "‹¢¹Û¡oÅ㺠šø[t¡[º[šA¡¹ìo¹ "à[¤ÍHþ t¢¡à Òìº>

(A) šàÑñ¹ &¤} ë\>๠(B) ë³ìκÎ> &¤} С¸àº

(C) ëyû¡¤Î &¤} ëJà¹à>à (D) Òà쮢¡ &¤} ¤àK¢

23. The restriction endonuclease BamHI is obtained from

(A) Arthrobacter luteus (B) Bacillus megaterium

(C) Bacillus amyloliquefaciens (D) Bacillus cereus

23ú ë¹[СöA¡Å> &ì“¡à[>l¡ü[AáìÚ\ BamHI šà*Úà ™àÚ ™à ë=ìA, ëÎ[i¡ Òº¡
(A) Arthrobacter luteus (B) Bacillus megaterium

(C) Bacillus amyloliquefaciens (D) Bacillus cereus

24. In C4 plants, the first stable compound of photosynthetic CO2 fixation is

(A) 3-Phosphoglyceric acid (B) Phosphoenolpyruvic acid

(C) Oxaloacetic acid (D) Pyruvic acid

24ú C4 l¡ü[Š±ìƒ¹ ÎàìºàA¡ÎìÅÃìÈ CO2 Î}¤Þê¡ì> l¡ü;šÄ šø=³ Ñ‚àÚã ë™ïK[i¡ Òº

(A) 3-ó¡Îìó¡à[NÃÎà[¹A¡ "¸à[Îl¡ (B) ó¡Îìó¡à&>º šàÒü¹ç¡[®¡A¡ "¸à[Îl¡

(C) "Gàìºà"¸àìÎ[i¡A¡ "¸à[Îl¡ (D) šàÒü¹ç¡[®¡A¡ "¸à[Îl¡

JB—Series P 9 [ P.T.O.

25. Which one of the following is not a pentose sugar?

(A) Ribose (B) Arabinose

(C) Xylulose (D) Galactose

25ú [>´•[º[Jt¡P¡[º¹ ³ì‹¸ ëA¡à>[i¡ ëš>ìi¡à\ ÎåK๠>Ú?

(A) ¹àÒüì¤à\ (B) "¸à¹à[¤ì>à\

(C) \àÒüºåìºà\ (D) K¸àºàA¡ìi¡à\

26. Which one of the following disorders is caused by the deficiency of iodine in food?

(A) Anaemia (B) Goitre

(C) Ketosis (D) Jaundice

26ú [>´•[º[Jt¡ ¤¸à[‹P¡[º¹ ³ì‹¸ ëA¡à>[i¡ Jà샸 "àìÚà[l¡ì>¹ "®¡àì¤ Qìi¡?

(A) ¹v¡û¡à¿t¡à (B) KÚi¡à¹

(C) [A¡ìi¡à[ÎÎ (D) \[“¡Î

27. Which one of the following is a natural anticoagulant substance?

(A) Sodium citrate (B) Albumin

(C) Heparin (D) Creatinine

27ú [>´•[º[Jt¡P¡[º¹ ³ì‹¸ ëA¡à>[i¡ šøàAõ¡[t¡A¡ ¹v¡û¡t¡e¡> šƒà=¢?

(A) ëÎà[l¡Úà³ ÎàÒüìi¡öi¡ (B) "¸àº¤å[³>

(C) ëÒšà[¹> (D) [yû¡ìÚ[i¡[>>

JB—Series P 10

28. The number of immunoglobulin classes found in human being is

(A) 10 (B) 5

(C) 12 (D) 6

28ú ³à>¤ìƒìÒ šà*Úà ™àÚ &³> Òü[³l¡üì>àìNÃà[¤l¡ü[ºì>¹ ëÅøoã Î}J¸à Òº
(A) 10 (B) 5

(C) 12 (D) 6

29. The vector of the disease Kala-azar is

(A) fruit fly (B) tsetse fly

(C) female sandfly (D) Aedes mosquito

29ú A¡àºàa¹ >à³A¡ ë¹àK[i¡¹ ¤àÒA¡ Òº

(A) ó¡º ³à[á (B) ëÎi¡[Î ³à[á

(C) Ñ|ã ¤àºå³à[á (D) &[l¡Î ³Åà

30. Oral contraceptive pills help in birth control by

(A) killing sperms (B) killing ova

(C) preventing ovulation (D) formation of barrier between sperm and
ova

30ú K®¢¡[>ì¹à‹A¡ ¤[Øl¡ \@µ [>Ú”|o A¡ì¹

(A) Ç¡yû¡àoå ‹Œ}ìι ³à‹¸ì³ (B) [l¡´¬àoå ‹Œ}ìι ³à‹¸ì³

(C) [l¡´¬àoåå [>K¢³> ¤Þê¡ A¡¹à¹ ³à‹¸ì³ (D) Ç¡yû¡àoå * [l¡´¬àoå¹ ³àìc¡ ¤òà‹à Îõ[Ê¡ A¡ì¹
JB—Series P 11 [ P.T.O.

JB—Series P 12 FF21—1270×3