Rajasthan Board Class 12 Question Paper 2024 Biology

RAJASTHAN BOARD

QUESTION
PAPER
2024

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RBSE

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, 2024
SENIOR SECONDARY EXAMINATION, 2024
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 5034 [ Turn Over

2
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 5034

3
IÊS> - A
SECTION - A

~hþ{dH$ënr àíZ (i go xvi) {ZåZ{b{IV àíZm| Ho$ CÎma H$m ghr {dH$ën M¶Z H$a CÎmanwpñVH$m ‘| {b{IE&
Choose the correct answer from multiple choice questions. (i to xvi) and write in given
answer book.
1) i) J¡a-Eë~w{‘Zg ~rO H$m CXmhaU h¡& [½]
A) Joh±þ ~) ‘¸$m
g) ‘Q>a X) Aa§S>
An example of a non-albuminous seed is
A) Wheat B) Maize
C) Pea D) Castor
ii) ‘mZd OZZ ‘| à{H«$¶mAm| Ho$ ghr H«$‘ H$mo Mw{Z¶o : [½]
A) ¶w½‘H$OZZ → ¶w½‘H$ g§b¶Z → ¶w½‘ZO → ^«yUr¶ n[adY©Z
~) ¶w½‘ZO → ¶w½‘H$OZZ → ¶w½‘H$ g§b¶Z → ^«yUr¶ n[adY©Z
g) ^«yUr¶ n[adY©Z → ¶w½‘H$OZZ → ¶w½‘ZO → ¶w½‘H$ g§b¶Z
X) ¶w½‘H$ g§b¶Z → ^«yUr¶ n[adY©Z → ¶w½‘H$OZZ → ¶w½‘ZO
Choose the correct sequence of processes in human reproduction:
A) Gametogenesis → Gamete fusion → Zygote → Embryonic development
B) Zygote → Gametogenesis → Gamete fusion → Embryonic development
C) Embryonic development → Gametogenesis → Zygote → Gamete fusion
D) Gamete fusion → Embryonic development → Gametogenesis → Zygote
iii) {ZåZ{b{IV ‘| go H$m¡Zgr ‘{hbmAm| ‘| ~§Ü¶H$aU H$s à{H«$¶m h¡? [½]
A) AÊS>OZZ ~) Z{bH$m-CÀN>oXZ
g) ewH«$OZZ X) ewH«$dmhH$-CÀN>oXZ
Which of the following is sterilisation process in females?
A) Oogenesis B) Tubectomy
C) Spermatogenesis D) Vasectomy

SS–42–Biology 5034 [ Turn Over

4
iv) S>rEZE AmZwd§{eH$ nXmW© h¡ BgHo$ ~mao ‘| gwñnï> à‘mU, H$m¡Zgo d¡km{ZH$m| Ho$ à¶moJm| go àmá hþAm&[½]
A) íbmBS>Z d ídmZ ~) ‘¡Ï¶y‘ogoëgZ d ’«¡$H${bZ ñQ>mb
g) ’«|$³dmg O¡H$~ d O¡³do ‘moZmS> X) Aë’«o$S> hf} d ‘mWm© Mog
The unequivocal proof that DNA is the genetic material, came from the
experiments of which scientists.
A) Schleiden and Schwann
B) Mathew Meselson and Franklin Stahl
C) Francois Jacob and Jacque Monod
D) Alfred Hershey and Martha Chase
v) DNA ‘| ½dmZrZ ZmBQ´>moOZr jma H$m¡Zgo ZmBQ´>moOZr jma go ¶wp½‘V hmoVm h¡& [½]
A) ES>o{ZZ ~) gmBQ>mg
o rZ
g) WmB{‘Z X) ¶yao{gb
Which nitrogenous base pairs with guanine nitrogenous base in DNA
A) Adenine B) Cytosine
C) Thymine D) Uracil
vi) S>m{d©Z H$s q’$M CXmhaU h¡ - [½]
A) Angmar {dH$mg ~) g‘mZmÝVa {dH$mg
g) AZwHy$br {d{H$aU X) amgm¶{ZH$ {dH$mg
Darwin's finches is an example of
A) Convergent evolution B) Parallel evolution
C) Adaptive radiation D) Chemical evolution
vii) OrdmUw O{ZV amoJ h¡ - [½]
A) {S>ßWr[a¶m ~) ‘bo[a¶m
g) A‘r~Vm X) EoñHo$[agVm
Bacterial disease is
A) Diphtheria B) Malaria
C) Amoebiasis D) Ascariasis

SS–42–Biology 5034

5
viii) {ZåZ{b{IV ‘| go H$m¡Zgm gyú‘Ord {g{Q´>H$ Aåb H$m CËnmXZ H$aVm h¡ - [½]
A) EgrQ>mo~¡³Q>a E{gQ>mB© ~) ³bmoñQ´>r{S>¶‘ ã¶yQ>m¶{bH$‘
g) b¡³Q>mo~¡{gbg Om{V¶m§ X) Eoñna{Obg ZmBJa
Citric acid is produced by which of the following microorganism.
A) Acetobacter aceti B) Clostridium butylicum
C) Lactobacillus species D) Aspergillus niger
ix) EoJmamoO O¡b àmá {H$¶m OmVm h¡ - [½]
A) H$dH$ ~) g‘wÐr Kmg
g) hmB{S´>bm X) Johÿ±
Agarose gel is extracted from -
A) Fungus B) Sea weeds
C) Hydrilla D) Wheat
x) O¡d àm¡Úmo{JH$s Ûmam V¡¶ma 'JmoëS>Z amBg' ‘| àMwa hmoVm h¡ - [½]
A) {dQ>m{‘Z 'A' ~) {dQ>m{‘Z 'D'
g) {dQ>m{‘Z 'K' X) {dQ>m{‘Z 'E'
"Golden rice" developed by biotechnology is rich in-
A) Vitamin 'A' B) Vitamin 'D'
C) Vitamin 'K' D) Vitamin 'E'
xi) g‘{ï> KZËd H$mo KQ>mZo dmbo àH«$‘m| H$m ghr g‘yh h¡ - [½]
A) OÝ‘Xa, CËàdmgZ ~) ‘¥Ë¶wXa, AmàdmgZ
g) OÝ‘Xa, AmàdmgZ X) ‘¥Ë¶wXa, CËàdmgZ
Correct set of processes which decreases the population density are-
A) Natality, Emigration B) Mortality, Immigration
C) Natality, Immigration D) Mortality, Emigration

SS–42–Biology 5034 [ Turn Over

6
xii) g‘{ï> nmañn[aH$ {H«$¶m, {Og‘| XmoZmo| Om{V¶m| H$mo bm^ hmoVm h¡ - [½]
A) naOr{dVm ~) ñnYm©
g) ghmonH$m[aVm X) na^jU
Population interactions, in which both the species get benefited.
A) Parasitism B) Competition
C) Mutualism D) Predation
xiii) ‘mZd [Z{‘©V nm[aV§Ì H$m CXmhaU h¡ - [½]
A) ‘éñWb ~) Z{X¶m±
g) Ádma ZX‘wI X) Ob Ordembm
An example of man-made ecosystem is -
A) Desert B) Rivers
C) Estuary D) Aquarium
xiv) ImÚ l¥§IbmAm| Ho$ àmH¥${VH$ A§Vag§~§Y H$mo H$hVo h¡ - [½]
A) Amhma Omb ~) I‹S>r ’$gb
g) nmofU ñVa X) CËnmXH$Vm
The natural interconnection of food chain is called.
A) Food web B) Standing crop
C) Trophic level D) Productivity
xv) X{jU A’«$sH$m Ho$ OmohmÝg~J© ‘| gVV² {dH$mg na {díd {eIa gå‘obZ H$~ Am¶mo{OV {H$¶m J¶m Wm?[½]
A) 1990 ~) 2002
g) 2010 X) 2020
When was the world summit on sustainable development held in Johannesburg,
South Africa?
A) 1990 B) 2002
C) 2010 D) 2020
xvi) hm°Q>ñnm°Q> H$m CXmhaU h¡ - [½]
A) CÎma ^maVr¶ ‘¡XmZ ~) X{jUr ^maVr¶ ‘¡XmZ
g) Qw>§S´>m joÌ X) {h‘mb¶
Example of a hotspot is -
A) North Indian Plains B) South Indian Plains
C) Tundra region D) Himalayas

SS–42–Biology 5034

7
2) [a³V ñWmZm| H$s ny{V© H$s{OE :
Fill in the blanks :
i) {Ìg§b¶Z Ho$ níMmV² H|$Ðr¶ H$mo{eH$m ............. ~Z OmVr h¡& [½]
The central cell after triple fusion becomes the ________.
ii) A§S>moËgJ© Ho$ Xm¡amZ A§S>me¶ go CËg{O©V A§S>mUw H$mo g§J«h H$aZo ‘| ............. ghm¶H$ hmoVo h¢& [½]
________ help in collection of the ovum after ovulation.
iii) F2 Ho$ b§~o nm¡Yo Ho$ OrZmoQ>mBn {ZYm©aU Ho$ {bE ‘|S>b Zo F2 Ho$ b§~o nm¡Yo H$m ~m¡Zo nm¡Yo go g§H$aU
H$adm¶m Bgo ............. H$hVo h¡& [½]
To determine the genotype of a tall plant in F2, Mendel crossed the tall plant
of F2 with a dwarf plant, this is called a ________.
iv) S>rEZE Ho$ jma ¶w½‘m| Ho$ KQ>Zo-~T>Zo go ............. CËn[adV©Z CËnÞ hmoVm h¡& [½]
Deletion or insertion of base pairs in DNA cause _______ mutation.
v) ............. {gÕm§V H$hVm h¡ {H$ g‘{ï> ‘| Abrb (¶w½‘ {dH$ënr) Amd¥{Îm¶m± Am¡a CZHo$ bmoH$g
({dñWb) gwpñWa hmoVr h¢, Omo EH$ nrT>r go Xÿgar nrT>r VH$ pñWa ahVo h¢& [½]
________ principle says that allele frequencies in a population are stable and
is constant from generation to generation.
vi) ............. Zm‘H$ àmoQ>moOmoAZ naOrdr go A‘r~Vm amoJ hmoVm h¡& [½]
________ is a protozoan parasite which causes amoebiasis.
vii) ~¡³Q>r[a¶m Ûmam {H$pÊdV AmQ>o H$s ’y$br C^ar e³b ............. J¡g Ho$ CËnmXZ Ho$ H$maU hmoVr h¡&[½]
The puffed-up appearance of dough fermented by bacteria is due to the
production of ________ gas.
viii) AmU{dH$ H¢$Mr H$ho OmZo dmbo ............. EÝOmB‘ H$s ImoO go S>rEZE H$mo {d{eï> OJhm| na H$mQ>Zm
g§^d hmo gH$m& [½]
The cutting of DNA at specific sites became possible with the discovery of
the _______ enzyme called as molecular scissors.
ix) Ord {df {Og OrZ Ûmam Hy$Q>~Õ hmoVo h¢ Cgo ............. H$hVo h§¡& [½]
The toxin is coded by a gene named ________.
x) ‘Ëñ¶ nmbZ Ho$ CÔoí¶ go A’«$sH$Z H¡$Q>{’$e ............. H$mo h‘mar Z{X¶m| ‘| bm¶m J¶m&
[½]
Introduction of the African catfish ________ for aquaculture purposes in
our rivers.

SS–42–Biology 5034 [ Turn Over

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3) {ZåZ{b{IV àíZm| Ho$ CÎma EH$ eãX AWdm EH$ n§{º$ ‘| Xr{OE :
Give the answers of the following questions in a word or a line.
i) Ag§JOZZ H$mo n[a^m{fV H$s{OE& [1]
Define apomixis.
ii) {Q>S²>S>o ‘| qbJ {ZYm©aU H$m àH$ma {b{IE& [1]
Write type of sex determination in Grasshopper.
iii) AmaEZE (RNA) H$m dh àH$ma {b{IE Omo E‘rZmo Aåbm| Ho$ bmZo d AmZwd§{eH$ Hy$Q> Ho$ n‹T>Zo> H$m H$m‘
H$aVm h¡& [1]
Write the type of RNA which brings aminoacids and reads the genetic code.
iv) DNA ‘| ݶyp³b¶mogmBS> d ’$m°ñ’o$Q> g‘yh Ho$ ~rM CnpñWV ~§Y H$m Zm‘ {b{IE& [1]
Write the name of bond between phosphate group and nucleoside in DNA.
v) hmo‘mo Ba¡³Q>g ‘mZd H$s {X‘mJr j‘Vm bJ^J {H$VZr Wr? [1]
What was the approximately brain size of Homo erectus man?
vi) Vwë¶ê$nVm H$mo {b{IE& [1]
Write analogy.
vii) g{H«$¶ à{Vajm H$mo n[a^m{fV H$s{OE& [1]
Define active immunity.
viii) ~«oS> ~ZmZo Ho$ {bE Cn¶moJ ‘| {bE OmZo dmbo gyú‘Ord H$m Zm‘ {b{IE& [1]
Write the name of microorganism used in bread making.

IÊS - ~
SECTION - B

bKwCÎmar¶ àíZ (CÎma eãX gr‘m 50 eãX) :
Short answer type questions (Answer word limit 50 words) :

4) Jwê$~rOmUwYmZr H$s g§aMZm H$m dU©Z H$s{OE& [1½]
Describe the structure of megasporangium.

5) EH$ namJH$moe H$s AZwàñW H$mQ> H$m Zm‘m§{H$V {MÌ ~ZmBE& [1½]
Draw labelled diagram of transverse section of a pollen sac.

SS–42–Biology 5034

9
6) ghm¶H$ OZZ àm¡Úmo{J{H$¶m| Ho$ H$moB© VrZ CXmhaU {b{IE& [½+½+½=1½]
Write any three examples of assisted reproductive technologies.

7) XmÌ-H$mo{eH$m Aaº$Vm amoJ H$m H$maU ñnï> H$s{OE& [1½]
Explain reason of sickle-cell anaemia disease.

8) AnyU© à^m{dVm H$mo Xem©Zo dmbm nZoQ> dJ© {MÌ ~ZmBE& [1½]
Draw a Punnett square diagram showing the incomplete dominance.

9) dm{hV‘b CnMma ‘| gyú‘Ordm| H$s ^y{‘H$m g‘PmBE& [1½]
Explain role of microorganisms in sewage treatment.

10) ~m¶moJ¡g g§¶§Ì H$m Zm‘m§{H$V {MÌ ~ZmBE& [1½]
Draw a labelled diagram of biogas plant.

11) nanmofr H$mo{eH$mAm| ‘| {dOmVr¶ S>rEZE H$mo àdoe H$amZo H$s EH$ {d{Y H$mo {b{IE& [1½]
Write one method of introducing foreign DNA into host cells.

12) B. H$mobmB© ³bmoqZJ g§dmhH$ pBR 322 H$m {MÌ ~ZmBE& [1½]
Draw a diagram of E. coli cloning vector pBR 322.

13) nmaOrdr O§Vw H$s n[a^mfm {b{IE& nmaOrdr O§Vw go ‘mZd H$mo hmoZo dmbm EH$ bm^ {b{IE& [1+½=1½]
Define transgenic animals. Write one benefit for man by transgenic animals.

14) amoJm| H$s àma§{^H$ nhMmZ H$aZo ‘| AmU{dH$ {ZXmZ VH$ZrH$ {H$g àH$ma ghm¶H$ h¡, CXmhaU XoH$a g‘PmBE&
[1½]
Explain with an example, how molecular diagnostic techniques are helpful in early
diagnosis of the diseases.

15) ñdñWmZo g§ajU H$mo CXmhaU XoH$a g‘PmBE& [1½]
Explain In situ conservation by giving an example.

SS–42–Biology 5034 [ Turn Over

10
IÊS> - g
SECTION - C

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

16) ewH«$OZZ H$mo g‘PmBE& [3]
Explain spermatogenesis.
AWdm/OR
ewH«$mUw Ho$ {ZåZ{b{IV ^mJ Ho$ H$m¶© {b{IE& [1+1+1=3]
i) erf©
ii) ‘ܶI§S>
iii) nyN ± >
Write the function of following parts of sperm -
i) head
ii) middle piece
iii) tail

17) S>rEZE d AmaEZE Ho$ ~rM VrZ A§Va {b{IE& [1+1+1=3]
Write three differences between DNA and RNA.
AWdm/OR
{ZåZ{b{IV Ho$ ~mao ‘| {b{IE& [1+1+1=3]
i) Xmoham H$m¶© H$aZo dmbm AmZwd§{eH$ Hy$Q>&
ii) S>rEZE H$m dh I§S> Omo nm°brnoßQ>mBS> H$m Hy$Q>boIZ H$aVm h¡&
iii) S>rEZE I§S> {Og E§OmB‘ Ho$ Ûmam Ow‹S>Vo h¢&
Write about the following.
i) Genetic code that has dual functions.
ii) A segment of DNA coding for a polypeptide.
iii) Fragments of DNA joined by which enzyme.

18) g§^ma V§Ì (bm°{OpñQ>H$) g‘{ï> d¥{Õ H$m dU©Z H$s{OE&
[3]
Describe the logistic population growth.
AWdm/OR
g‘{ï> H$s H$moB© VrZ ‘hËdnyU© {deofVmE± {b{IE& [1+1+1=3]
Write three important characteristics of a population.

SS–42–Biology 5034

11
IÊS> - X
SECTION - D

{Z~ÝYmË‘H$ àíZ (CÎma eãX gr‘m 150 eãX) :
Essay type questions (Answer word limit 150 words) :

19) i) AIDS H$m nyam Zm‘ {b{IE&
ii) HIV g§§H«$‘U Ho$ Mma VarHo$ {b{IE&
iii) HIV g§H«$‘U H$s amoH$Wm‘ H$m Cnm¶ {b{IE&
i) Write full name of AIDS.
ii) Write four ways of transmission of HIV infection.
iii) Write a way to prevent HIV infection.
[1+2+1=4]
AWdm/OR
i) g§ñne© g§X‘Z H$mo n[a^m{fV H$s{OE&
ii) gwX‘ A~w©X d XþX©‘ A~©wX ‘| A§Va ñnï> H$s{OE&
iii) H¢$ga Ho$ {H$gr EH$ H$maU H$mo {b{IE&
i) Define contact inhibition
ii) Explain the difference between benign tumors and malignant tumors.
iii) Write any one cause of cancer.
[1+2+1=4]

20) i) ZoQ> àmW{‘H$ CËnmXH$Vm H$mo n[a^m{fV H$s{OE&
ii) D$Om© {na¡{‘S> gX¡d I‹S>r AdñWm ‘| hmoVm h¡ g{MÌ g‘PmBE&
i) Define net primary productivity.
ii) Explain with diagram that the pyramid of energy is always upright.
[1+3=4]
AWdm/OR
i) pñWV eñ¶ ¶m I‹S>r ’$gb H$mo n[a^m{fV H$s{OE&
ii) EH$ ñWbr¶ nm[aV§Ì ‘| AnKQ>Z H$s à{H«$¶m Ho$ ‘hÎdnyU© MaUm| H$mo g‘PmBE&
i) Define standing crop.
ii) Explain important steps in the process of decomposition in a terrestrial
ecosystem.
[1+3=4]


SS–42–Biology 5034

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