Rajasthan Board Class 12 Question Paper 2023 Biology

Rajasthan Board

QUESTION
PAPER

Zm_m§H$ Roll No.

Tear Here
Sl.No. :

No. of Questions – 20
No. of Printed Pages – 11 SS–42–Biology

Cƒ _mÜ`{_H$ narjm, 2023
SENIOR SECONDARY EXAMINATION, 2023
Ord {dkmZ

TEAR HERE TO OPEN THE QUESTION PAPER
BIOLOGY
g_` : 3 KÊQ>o 15 {‘{ZQ>

àíZ nÌ H$mo ImobZo Ho$ {bE `hm± \$m‹S>|
nyUmªH$ : 56

narjm{W©`m| Ho$ {bE gm_mÝ` {ZX}e …
GENERAL INSTRUCTIONS TO THE EXAMINEES :

1) narjmWu gd©àW_ AnZo àíZ nÌ na Zm_m§H$ A{Zdm`©V… {bI|&
Candidate must write first his / her Roll No. on the question paper
compulsorily.
2) g^r àíZ H$aZo A{Zdm`© h¢&
All the questions are compulsory.
3) àË`oH$ àíZ H$m CÎma Xr JB© CÎma-nwpñVH$m _| hr {bI|&
Write the answer to each question in the given answer-book only.
4) {OZ àíZmo§ _| AmÝV[aH$ IÊS> h¡§, CZ g^r Ho$ CÎma EH$ gmW hr {bI|&
`hm± go H$m{Q>E

For questions having more than one part, the answers to those parts are to be
written together in continuity.

SS–42–Biology 3030 [ Turn Over

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5) àíZ nÌ Ho$ {hÝXr d A§J«oOr ê$nmÝVaU _o| {H$gr àH$ma H$s Ìw{Q> / AÝVa / {damoYm^mg hmoZo na {hÝXr ^mfm
Ho$ àíZ H$mo hr ghr _mZ|&

If there is any error / difference / contradiction in the Hindi & English versions
of the question paper, the question of Hindi version should be treated valid.

6) àíZ H$m CÎma {bIZo go nyd© àíZ H$m H«$‘m§H$ Adí¶ {bI|&
Write down the serial number of the question before attempting it.

SS–42–Biology 3030

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IÊS> - A
SECTION - A

{ZåZ{b{IV àíZm| Ho$ CÎma H$m ghr {dH$ën M¶Z H$a CÎmanwpñVH$m ‘| {b{IE&

Answer the following questions by selecting the correct option in answer book.

1) i) hmBS´>m ‘| Ab¢{JH$ OZZ g§aMZmE± h¢& [1]

A) H${bH$m ~) H$mo{Z{S>¶m

g) Mb ~rOmUw X) O¡å¶yb

Asexual reproductive structures in Hydra are -

A) Bud B) Conidia

C) Zoospores D) Gemmules

ii) ¶m¡Z g§Mm[aV amoJ H$m CXmhaU Zhr h¢& [1]

A) gwOmH$ ~) {g{’${bg

g) ³bo{‘{S>¶Vm X) H¢$ga

Not an example of sexually transmitted disease is -

A) Gonorrhea B) Syphilis

C) Chlamydiasis D) Cancer

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iii) AmZwd§{eH$ Hy$Q> Omo ‘r{W¶moZrZ H$m Hy$Q> boIZ H$aVm h¢& [1]

A) UUU ~) AUG

g) ACG X) AAA

The genetic code that codes for Methionine is -

A) UUU B) AUG

C) ACG D) AAA

iv) bgrH$m^ A§J H$m CXmhaU h¢& [1]

A) WmB‘g ~) ¶H¥$V

g) A½Zme¶ X) Am‘me¶

Example of lymphoid organ is -

A) Thymus B) Liver

C) Pancreas D) Stomach

v) gyú‘Ord {OgH$m Cn¶moJ O¡d Cd©aH$ Ho$ ê$n ‘| {H$¶m OmVm h¡& [1]

A) Q´>mBH$moS>‘m© ~) n¡Zrgr{b¶‘ ZmoQ>oQ>‘

g) gm¶Zmo~¡³Q>r[a¶m X) b¡³Q>mo~¡{gbg

Microbe that is used as biofertilizer.

A) Trichoderma B) Penicillium notatum

C) Cyanobacteria D) Lactobacillus

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vi) E§OmB‘ Omo S>rEZE H$mo I§S>mo§ ‘| H$mQ>Zo H$m H$m‘ H$aVm h¢& [1]
A) S>rEZE bmBJoO ~) à{V~§YZ E§OmB‘
g) S>rEZE nmo{b‘aoO X) àmoQ>rEOoO E§OmB‘
An enzyme that cut DNA into fragments -
A) DNA Ligase B) Restriction enzyme
C) DNA Polymerase D) Proteases enzyme
vii) H$m¡Z gm àmoQ>rZ OrZ "H«$mB©' ‘³H$m N>oXH$ H$mo {Z¶§{ÌV H$aVm h¡? [1]
A) I - Ac ~) I - Ac Ed§ II - Ab
g) II - Ac X) I - Ab
Which protein gene 'cry' controls the corn borer.
A) I - Ac B) I - Ac & II - Ab
C) II - Ac D) I - Ab
viii) ñdñWmZo (BZ-{gQy>) O¡d{d{dYVm g§ajU H$m CXmhaU h¢& [1]
A) dݶOrd Aä¶maU ~) O§Vw CÚmZ
g) dZñn{V CÚmZ X) dݶ Ord g’$mar nmH©$
Example of In-situ conservation of biodiversity is -
A) Wildlife sanctuaries B) Zoological park
C) Botanical garden D) Wildlife safari park
ix) J«rZhmCg J¡g H$m ‘w»¶ CXmhaU h¢& [1]
A) ZmBQ´>mO
o Z ~) H$m~©Z ‘moZmoAm°³gmBS>
g) ‘oWZo X) Am°³grOZ
Main example of greenhouse gas is -
A) Nitrogen B) Carbon monoxide
C) Methane D) Oxygen

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2) [a³V ñWmZm| H$s ny{V© H$s{OE :
Fill in the blanks :
i) nw§‘Ywn ............. (Jw{UVm) hmoVr h¢ {Og‘| ............. H«$mo‘mogmo‘ hmoVo h¢& [½+½=1]
Male honey bee are ________ (Ploidy) having ________ chromosomes.
ii) ‘Yw‘oh Ho$ {bE Cn¶moJ ‘| bmE OmZo dmbm B§gw{bZ OmZdam| d gwAam| H$mo ‘maH$a CZHo$ .............
(A§J) go {ZH$mbm OmVm Wm& [1]
Insulin used for diabetes was extracted from the ________ (organ) of
slaughtered pigs and animals.
iii) O¡d‘mÌm Ho$ CËnmXZ H$s Xa H$mo ............. H$hVo h¡& [1]
The rate of biomass production is called __________.
iv) df© 2002 ‘| X{jU A’«$sH$m Ho$ ............. ‘| gVV² {dH$mg na {díd{eIa gå‘obZ hþAm& [1]
The world Summit on Sustainable Development held in 2002 in _________,
South Africa.

3) {ZåZ àíZm| Ho$ CÎma EH$ eãX AWdm EH$ n§{º$ ‘| Xr{OE :
Give the answer of the following questions in a word or a line.
i) ~mø {ZfoMZ H$mo n[a^m{fV H$s{OE& [1]
Define external fertilisation.
ii) ZIFT H$m nyam Zm‘ {b{IE& [1]
Write full name of ZIFT.
iii) OrZmoQ>mBn RRyy dmbo ~rOr¶nmXn H$m ’$sZmoQ>mBn hmoJm& [1]
The phenotype of RRyy genotype seeded plant will be -
iv) nmaOrdr O§Vw ³¶m h¡? [1]
What is Transgenic animal?
v) ES>rZmogrZ {S>E‘rZoO H$m H$m¶© {b{IE& [1]
Write function of Adenosine deaminase.

SS–42–Biology 3030

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vi) ݶyp³b¶mogmBS> Ho$ KQ>H$m| Ho$ Zm‘ {b{IE& [½+½=1]
Write name of components of nucleoside.
vii) Y«wdr¶ g‘wÐm| ‘| nm¶r OmZo dmbr grb ‘| nm¶o OmZo dmbm EH$ AZwHy$bZ {b{IE& [1]
Write one adaptation of seals found in polar seas.
viii) dZmoÝ‘ybZ H$m EH$ H$maU g‘PmBE& [1]
Explain one reason of deforestation.

IÊS - ~
SECTION - B

bKwCÎmar¶ àíZ (CÎma eãX gr‘m 50 eãX) :
Short answer type questions (Answer word limit 50 words) :
4) ñÌr OZZ V§Ì Ho$ VrZ ^mJm| Ho$ Zm‘ d H$m¶© {b{IE& [½+½+½=1½]
Write name and function of three parts of female reproductive system.

5) Anam Ûmam ñÌm{dV VrZ hm°‘mo}Z H$m Zm‘ {b{IE& [½+½+½=1½]
Write three hormones secreted by placenta.

6) "AnyU© à^m{dVm' H$mo CXmhaU Ûmam g‘PmBE& [1½]
Explain 'Incomplete dominance' with example.

7) Q>Z©a qgS´>mo‘ H$mo bjUm| g{hV g‘PmBE& [1½]
Explain Turner's syndrome with symptoms.

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8) {Z¶§S>aWb ‘mZd H$s {X‘mJr j‘Vm d OrdZe¡br Ho$ Xmo bjU {b{IE& [½+1=1½]
Write brain capacity and two characters of life style of Neanderthal man.

9) AZwHy$br {d{H$aU H$mo CXmhaU Ûmam g‘PmBE& [1½]
Explain 'Adaptive radiation' with example.

10) A§V… àOZZ H$mo n[a^m{fV H$s{OE& A§Va OmVr¶ g§H$aU go CËnÝZ {H$gr EH$ new H$m Zm‘ {b{IE&
[1+½=1½]
Define inbreeding. Write name of any one animal developed from interspecific
hybridisation.

11) ^mJ - A ‘| ’$gb H$m Zm‘ Am¡a ^mJ - B ‘| Bggo g§~{§ YV amoJ à{VamoYH$ {H$ñ‘| h¢& [½+½+½=1½]
{ZåZ H$mo gw‘{o bV H$s{OE :
^mJ - A ^mJ - B
A) bmo{~¶m i) nygm gXm~hma
B) ’y$bJmo^r ii) nygm H$mo‘b
C) {‘M© iii) nygm ew^«m

Part - A contains the name of crop and Part - B contains their related disease
resistance variety.
Match the following :
PART - A PART - B
A) Cowpea i) Pusa Sadabahar
B) Cauliflower ii) Pusa Komal
C) Chilli iii) Pusa Shubhra

SS–42–Biology 3030

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12) ~«rdg© ¶rñQ> Ho$ Zm‘ go à{gÕ gyú‘Ord H$m Zm‘ {b{IE& BgH$m EH$ Cn¶moJ {b{IE& [1+½=1½]

Write the name of the microorganism commonly called brewer's yeast. Write one
use of it.

13) ~rAmoS>r H$m nyam Zm‘ {b{IE& ì¶W© Ob H$s ~rAmoS>r d àXÿfU j‘Vm ‘| ³¶m g§~§Y h¡? [1+½=1½]

Write full name of BOD. What is the relation of polluting potential and BOD of
waste water.

14) X§S> {dbmoS>H$ hm¡O ~m¶mo[a³Q>a H$m Zm‘m§{H$V {MÌ ~ZmBE& [1½]

Draw a labelled diagram of sparged stirred-tank bioreactor.

15) ³bmoqZJ g§dmhH$ H$s {H$gr EH$ {deofVm H$mo g‘PmBE& [1½]

Explain any one feature of cloning vector.

IÊS> - g
SECTION - C

XrK©CÎmar¶ àíZ (CÎma eãX gr‘m 100 eãX) :
Long answer type questions (Answer word limit 100 words) :

16) A‘r~Vm Ho$ amoJOZH$ H$m Zm‘ {b{IE& amoJ Ho$ Xmo bjU d g§H«$‘U Ho$ Xmo ñÌmoV {b{IE& [1+1+1=3]

Write the name of the pathogen of amoebiasis. Write two symptoms and two
source of infection.

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17) VZwVmnr Ord {H$go H$hVo h¢? O¡{dH$ AZw{H«$¶m Ho$ VarH$m| H$m AmaoIr¶ {Zê$nU ~ZmBE& [1+2=3]

What are the stenothermal organism? Draw a diagrammatic representation of
organismic response.

18) nm[apñW{VH$ AZwH«$‘U H$mo n[a^m{fV H$s{OE& Obma§^r AZwH«$‘U d ewîH$Vma§^r AZwH«$‘U H$mo g‘PmBE&
[1+2=3]

Define ecological succession. Explain Hydrarch succession and Xerarch succession
in brief.

IÊS> - X
SECTION - D

{Z~ÝYmË‘H$ àíZ (CÎma eãX gr‘m 100 eãX) :
Essay type questions (Answer word limit 100 words) :

19) i) namJU H$mo n[a^m{fV H$s{OE&
ii) Xmoham {ZfoMZ H$mo g‘PmBE&
iii) {Zfo{MV ^«yU H$moe H$s g§aMZm H$m Zm‘m§{H$V {MÌ ~ZmBE&
i) Define pollination.

ii) Explain double fertilisation.

iii) Draw a labelled diagram of structure of fertilised embryo sac.

[1+1½+1½=4]

AWdm/OR

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i) na{ZfoMZ namJU H$mo n[a^m{fV H$s{OE&
ii) J¡aEë~w{‘Zg, Eë~ww{‘Zg, n[a^«yÊnmofr ~rOm| H$m EH$-EH$ CXmhaU {b{IE&
iii) ñÌrHo$ga Ho$ bå~dV H$mQ> ‘| namJZ{bH$m H$s d¥{Õ H$mo Xem©Zo dmbm Zm‘m§{H$V {MÌ ~ZmBE&
i) Define Xenogamy pollination.
ii) Write one example of each non-albuminous, albuminous, perispermic seed.
iii) Draw a labelled diagram of L.S. of pistil showing path of pollen tube growth.
[1+1½+1½=4]

20) i) ñWmZm§VaU (Q´>m§gboeZ) H$mo n[a^m{fV H$s{OE&
ii) ñWmZm§VaU (Q´>m§gboeZ) à{H«$¶m H$mo g‘PmBE&
iii) ñWmZm§VaU (Q´>m§gboeZ) H$m Zm‘m§{H$V {MÌ ~ZmBE&
i) Define translation.
ii) Explain process of translation.
iii) Draw a labelled diagram of translation.
[1+1½+1½=4]
AWdm/OR
i) q~Xþ CËn[adV©Z Ho$ n[aUm‘ ñdê$n hmoZo dmbo amoJ H$m Zm‘ {b{IE&
ii) b¡H$ Amonoam°Z H$mo g‘PmBE&
iii) b¡H$ Amonoam°Z H$m Zm‘m§{H$V {MÌ ~ZmBE&
i) Name the disease that results from point mutation.
ii) Explain the Lac operon.
iii) Draw a labelled diagram of the Lac operon.
[1+1½+1½=4]

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SS–42–Biology 3030

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