Rajasthan Board 12th Model Paper 2024 Biology

MODEL
PAPER बोर्ड ऑफ सेकं डरी एज्युके शन राजस्थान
RAJASTHAN BOARD

2024


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ekè;fed f'k{kk cksMZ jktLFkku] vtesj
e‚My ç'u i= mPp ekè;fed ijh{kk 2024
fo"k;% tho foKku ¼BIOLOGY½
d{kk& 12
le;% 3 ?k.Vs 15 feuV iw.kkZd% 56

ijh{kkÆFk;ksa ds fy, lkekU; funsZ'k%
GENERAL INSTRUCTION TO THE EXAMINEES :

1- ijh{kkFkÊ loZçFke vius ç'u i= ij ukekad vfuok;Zr% fy[ksaA
Candidate must write first his/her Roll No- on the question paper compulsorily-

2- lHkh ç'u djus vfuok;Z gSA
All the questions are compulsory-

3- çR;sd ç'u dk mÙkj nh xà mÙkj iqfLrdk es gh fy[ksaA
Write the answer to each question in the given answer book only-

4- ftu ç'uksa es vkUrfjd [k.M gS mu lHkh ds mÙkj ,d lkFk gh fy[ksaA
For questions having more than one part, the answers to those parts are to be written together in
continuity.

5- ç'u dk mÙkj fy[kus ls iwoZ ç'u dk Øekad vo'; fy[ksaA
Write down the serial number of the question before- attempting it-

6- ç'u i= ds fgUnh o vaxzsth :ikUrj.k esa fdlh çdkj dh =qfV@vUrj@fojksèkkHkkl gksus ij
fgUnh Hkk"kk ds ç'u dks gh lgÈ ekusaA
If there is any error/difference/Contradiction in Hindi & English versions of the question paper, the
question of Hindi version should be treated valid-

7- ç'u Øekad 16 ls 20 es vkUrfjd fodYi gSA
There are internal choices in Question No. 16 to 20 .

[k.M & v
SECTION- A

1- cgqfodYih ç'u ¼i ls XVI½% fuEu ç'uksa ds mÙkj dk lgh fodYi p;u dj mÙkj iqfLrdk esa
fyf[k,A
Choose the correct answer from multiple choice question- (i to xvi) and write in given answers book .

¼i½ ijkxd.kksa dh ckgjh fHkfÙk fdl dkcZfud inkFkZ dh cuh gksrh gS& ½
¼v½ isfDVu ¼c½ Liksjhi‚ysfuu
¼l½ fyfXuu ¼n½ lsyqy‚t
The outer wall of pollen grains is made up of which organic material ?

(A) Pectin (B) Sporopollenin

(C) Lignin (D) Cellulose

¼ii½ 'kqØk.kqvksa dks iks"k.k nsus dk dk;Z djrh gS& ½
¼v½ lVksZyh dksf'kdk ¼c½ uj teZ dksf'kdk
¼l½ yhfMx dksf'kdk ¼n½ 'kqØ okfgdk
Works to nourish sperms -

(A) Sertoli cell (B) Male germ cell

(C) Ley dig cell (D) Vas deferens

¼iii½ vkS"kf/k jfgr var% xHkkZ'k;h ;qfä dkSulh gS& ½
¼v½ ,y ,u th&20 ¼c½ d‚ij&Vh
¼l½ çkstsLVklVZ ¼n½ fyIisl ywi
Which is the medicine-free contraceptive method -

(A) LNG-20 (B) Copper-t

(C) Progestasert (D) Lippes loop

¼iv½ fuEufyf[kr esa ls dkSulk fyax& lgyXu jksx gS & ½
¼v½ gsisVkbfVl ¼c½ ,M~l
¼l½ gheksfQfy;k ¼n½ gStk

Which of the following is a sex-linked disease ?

(A) Hepatitis (B) Aids

(C) Hemophilia (D) Cholera

¼V½ DNA ds nksuksa jTtqd ijLij fuEufyf[kr ca/k }kjk tqM+s gksrs gSa& ½
¼v½ gkbMªkt
s u ca/k ¼c½ Q‚LQksMkb,LVj ca/k
¼l½ isIVkbM ca/k ¼n½ Xykbdks flfMd ca/k
Both Strands of DNA are connected to each other by the following bond -

(A) Hydrogen bond (B) Phosphodiaster bond

(C) Peptide bond (D) Glycosidic bond

¼vi½ letkrrk dk lgh mnkgj.k gS& ½
¼v½ ekuo] phrk] Ogsy ds vxzikn ¼c½ 'kdjdanh ,oa vkyw
¼l½ i{kh] pexknM+ ds ia[k ¼n½ MkWyfQu Ogsy ds f¶yilZ
Which of the following is the correct example of homology -

(A) fore limbs of Human, Tiger and whale (B) Sweet Potato and Potato

(C) Wings of birds and bats (D) Flippers of Dolphin and whale.

¼vii½ fuEufyf[kr esa ls laØked jksxksa dk lgh lewg gS& ½
¼v½ U;weksfu;k] VkbQkbM] dSalj ¼c½ U;weksfu;k] isfp'k] ,M~l
¼l½ ,M~l] dSalj] isfp'k ¼n½ eysfj;k] fVVusl] laf/k'kksFk
Which of the following is the correct group of infectious diseases -

(A) Pneumonia, Typhoid, Cancer, (B) Pneumonia, Dysentery, Aids

(C) Aids, Cancer, Dysentery (D) Malaria, Tetanus, Arthritis

¼viii½ fuEufyf[kr esa ls BOD dk iwjk uke gS & ½
¼v½ ck;ksy‚ftdy v‚Dlhtu fMfQf'k,Ulh ¼c½ ck;ksdsfedy v‚Dlhtu fMfQf'k,Ulh
¼l½ ck;ksdsfedy v‚Dlhtu fMekUM ¼n½ ck;ksy‚ftdy v‚Dlhtu fMekUM
Full form of BOD is -

(A) Biological oxygen Deficiency - demand (B) Bio chemical oxygen Deficiency - demand

(C) Biochemical oxygen Demand - demand (D) Biological oxygen demand

¼ix½ fdlh [kk| J`a[kyk esa lokZfèkd] la[;k fdldh gksrh gS \ ½
¼v½ mRiknd ¼c½ çkFkfed miHkksäk
¼l½ f}rh;d miHkksäk ¼n½ vi?kVd
Who has the highest number in a food chain ?

¼A½ Producer (B) Primary consumer

(C) Secondary consumer ¼D½ Decomposer
¼x½ fuEufyf[kr esa ls vkf.od dSaph fdls dgrs gSa& ½
¼v½ DNA ykbxst ¼c½ jsfLVªD'ku ,.Mks U;wfDy,t
¼l½ DNA i‚yhesjst ¼na½ V‚iksvkblksesjst
Which of the following is called molecular scissor -

(A) DNA Ligase ¼B½ Restriction endo nuclease
(C) DNA polymerase (D) Topoisomerase

¼Xi½ fuEufyf[kr esa ls fdlesa ls Ti IykfTeM çkIr fd;k tkrk gSA ½
¼v½ ,xzkscSfDVfj;e VîwehQfl,al ¼c½ ,xzkscSfDVfj;e jkbtksthUl ls
¼l½ Ã- dksykà ¼n½ gheksfQyl bU¶yw,ath
In which of the Ti Plasmid is obtained from -

¼A½ Agrobacterium tumifaciens (B) Agrobacterium rhizogenes

(C) E.coli (D) Haemophilus influenzae

¼xii½ fuEufyf[kr esa ls lef"V dk xq.k gS& ½
¼v½ tUe nj ¼c½ e`R;qnj
¼l½ Çyx vuqikr ¼n½ mi;qZä lHkh
¼xiii½ which of the following is a property of the population -
(A) Birth rate ¼B½ Death rate
(C) Sex ratio (D) All of above

¼xiii½ Hkkjr esa dqy fdrus rIr LFky gS& ½
¼v½ pkj ¼c½ rhu
¼l½ nks ¼n½ ik¡p
How many Hot Sport are there in India -

(A) Four (B) Three

(C) Two (D) Five

¼xiv½fuEufyf[kr esa ls dkSuek fijkfeM lnSo lhèkk gksrk gS & ½
¼v½ tho Hkkj dk fijkfeM ¼c½ tho la[;k dk fijkfeM
¼l½ ÅtkZ dk fijkfeM ¼n½ mi;qZä esa ls dksà ugÈ
Which of the following Pyramids is always upright -?

(A) Pyramid of biomass (B) Pyramid of living numbers

(C) Pyramid of energy (D) None of the above

¼xv½ IUCN dh yky lwph ds vuqlkj fuEufyf[kr esa ls dkSulh tkfr foyqIr gks pqdh gS & ½
¼v½ MksMks ¼c½ Dosxk
¼l½ Fkkbysflu ¼n½ mi;qZä lHkh
According to the IUCN Red List, which of the following species has become extinct -

(A) Dodo (B) quagga

(C) Thylacine (D) all of above

¼xvi½ ,slh dkSulh ikjLifjd fØ;k gS ftlesa ,d tkfr dks ykHk gksrk gS rFkk nwljh tkfr dks u
ykHk gksrk gS] u gkfu gksrh gS& ½
¼v½ lgHkksftrk ¼c½ ijHk{k.k
¼l½ lgksidkfjrk ¼n½ ijthfork
What kind of interaction is there in which one species benefits and the other species neither benefits
nor suffers loss -

(A) Commensalism (B) Predation

(C) Mutualism (D) Parasitism

fjä LFkkuksa dh iwfrZ dhft,!
Fill in the blanks:-

¼i½ ---------------------- ijr fodkl'khy ijkxd.kksa dks iks"k.k iznku djrh gSA ½
................ Layer Provides nourishment to the developing Pollen grains.

¼ii½ ,d ifjiDo uj ;qXed ds fuekZ.k dh çfØ;k dks ------------------- dgrs gSaA ½
The process of formation of a mature male gamete is called .................... .

¼iii½ mRifjorZu mRiUu djus okys dkjd----------------- dgykrs gSaA ½
The factors causing mutation are called .................. .

¼iv½ ,d izk:ih dsUæd esa gYds vfHkjaftr gq, {ks= ----------------- dgykrs gSaA ½
The lightly stained areas in a typical Nucleous are called .......................... .

¼V½ çk—frd oj.k ----------------------- dh eq[; ladYiuk gSA ½
Natural selection is the main concept of ................... .

¼vi½ dksyksLVªe esa -------------------------- çfrj{kh dh çpqjrk gksrh gSA ½
Colostrums is rich in ---------------- antibodies .

¼vii½ ,sFksu‚y ds cM+s iSekus ij mRiknu ds fy, ----------------------- dk ç;ksx fd;k tkrk gSA ½
....................... is used for large scale Production of ethanol .

¼viii½ dkVs x, DNA [k.Mksa dks ------------------ fof/k }kjk vyx fd;k tkrk gSA ½
DNA fragments are separated by .................. .

¼ix½ fdlh dksf'kdk dÙkksZÙkd ls iw.kZ ikni cuus dh {kerk ------------ dgykrh gSA ½
Capacity to generate a whole plant from any cell/explants is called ..................... .

¼x½ es?kky; ds -------------------------- cgqr lh nqyZHk ikni tkfr;ksa dh 'kj.kLFkyh gSA- ½
In Meghalaya ....................... are the last refuges for a large number of rare Plants .

fuEufyf[kr ç'uksa ds mÙkj ,d 'kCn ;k ,d iafä esa nhft,% &
Give the answers of the following questions in a word or a line:-

¼i½ ijkx.k fdls dgrs gSa \ 1
What is Pollination ?

¼ii½ oa'kkxfr dk xq.klw=h; fl)kar fdlus fn;k \ 1
Who gave the chromosomal theory of inheritance?

¼iii½ flLVª‚u ¼leikj½ D;k gS\ 1
What is cistron ?

¼iv½ vuqdwyh fofdj.k dk dksbZ ,d mnkgj.k nhft,A 1
Give any one example of adaptive radiation.

¼v½ leo`fÙkrk dh ifjHkk"kk fyf[k,A 1
Write the definition of analogy.

¼vi½ VkbQkbM Toj dh iqf"V fdl ijh{k.k esa dh tkrh gS \ 1
Which test is used to confirm typhoid fever ?

¼vii½ çkjafHkd dwV AUG fdl vehuks vEy dks dksfMr djrk gS\ 1

which amino acid is coded by the initiator codon AUG ?

¼viii½ ngh esa dkSuls ykHknk;d thok.kq feyrs gSa \ 1

Which beneficial bacteria are found in curd ?

[k.M& c
SECTION-B

y?kqmÙkjh; ç'u ¼'kCn lhek & 50 'kCn½ %&
Short answer type questions (Answer word limit 50 words) :-

4- f=lay;u D;k gS\ ikS/kksa esa fdrus çdkj dk Hkzw.kiks"k ik;k tkrk gS \ (½+1)

What is triple fusion? How many types of endosperm are found in Plants ?

5- Loijkx.k D;k gS\ ikS/kksa esa bls jksdus ds fy, dkSulh fof/k;k¡ ç;ksx esa yh tkrh gS \ (½+1)
What is self-pollination? What methods are used to Prevent this in Plants ?

6- mYcos/ku D;k gS \ ;g çfØ;k gekjs ns'k esa D;ksa çfrcaf/kr gS \ (½+1)

What is amniocentesis? Why this process is banned in our country ?

7- es.My ds çFke fu;e dks iqusV oxZ dk ç;ksx djrs gq, le>kb,A (1½)

Explain the first law of Mendal using- Punnett Square .

8- oa'kkoyh fo'ys"k.k D;k gS \ ;g fdl çdkj ls mi;ksxh gS \ (1½)

What is pedigree analysis? How is it useful ?

9- okfgrey ls vki D;k le>rs gS \ bldk mipkj D;ksa vko';d gS \ (1½)

What is Sewage ? Why is its treatment necessary ?

10- ck;ksxSl esa dkSulh xSlsa feyrh gS \ ck;ksxSl la;a= dk ukekafdr fp= cukb,A (½+1)

Which gases are present in biogas? Make a labeled diagram of a biogas Plant-

11- fuEufyf[kr ,atkbe dk dksbZ ,d dk;Z fyf[k,A (½+½+½)

¼i½ çfrca/ku ,atkbe ¼ii½ ,atkbe dkbfVust ¼iii½ DNA ykbxst
Write any one function of the following enzyme: -

(i) Restriction enzyme (ii) enzyme Chitinase (iii) DNA Ligase

12- PCR dk iwjk uke D;k gS\ bldk D;k mi;ksx gS\ (½+1)

What is the full name of PCR ? What is it used for ?

13- vkuqokaf'kd :ikarfjr tho D;k gS\ ,sls ikS/kksa ds dksbZ nks ykHk fyf[k,A (½+1)

What is genetically Modified organisms ? Write any two uses of such Plants.

14- ØkbZ çksVhUl D;k gS\ ;s çksVhUl fdlls çkIr dh tkrh gS\ (1½)

What are cry Proteins ? Where do we get this Protein from ?

15 tSo fofo/krk ls vki D;k le>rs gS\ bldh {kfr ds D;k dkj.k gS\ (1½)

What do you understand by biodiversity? What are the reasons for its damage ?

[k.M&l
SECTION-C

nh?kZmÙkjh; ç'u ¼mÙkj 'kCn lhek & 100 'kCn½
Long answer type questions [Answer word limit 100 words]

16- fuEufyf[kr ds dk;Z fyf[k, & ¼1$1$1½
¼v½ ihr fi.M ¼c½ vxzfi.Md ¼l½ >kyj
Write the functions of following -

(A) Corpus luteum (B) Acrosome (C) Fimbriae

vFkok@OR
v.Mtuu fdls dgrs gS\ O;k[;k dhft,A ¼1$2½
What is cogenesis? Explain.

17 lef"V dh dksbZ rhu fo'ks"krkvksa dh O;k[;k dhft,A ¼1$1$1½
Explain any three characteristics of the Population .

vFkok@OR
fuEufyf[kr ij fVIi.kh dhft,A ¼1½$1½½
¼v½ Nn~ekoj.k ¼c½ ijthfork
Comment on the following-

(A) Camouflage (B) Parasitism

18- fuEufyf[kr ij fVIi.kh dhft, A ¼1½$1½½
¼v½ izeksVj ¼c½ t R N A
Comment on the following-

(A) Promoter (B) t R N A

vFkok@OR
fuEufyf[kr ds chp varj crkb,A ¼1$1$1½
¼v½ iqujko`fÙk DNA ,oa vuq"kaxh DNA ¼c½ VsEiysV jTtqd ,oa dksfMax jTtqd
¼l½ m R N A ,oa t R N A
Explain the difference between the following-

(A) Repetitive DNA and Satellite DNA (B) Template strand and Coding Strand

(C) m R N A and & t R N A

[k.M& n
Section - D

fuca/kkRed ç'u ¼mÙkj 'kCn lhek & 150 'kCn½
Essay type questions (Answer word limit- 150 words)

19 fuEufyf[kr esa varj crkrs gq, çR;sd ds mnkgj.k nhft,A ¼2$2½ ¾ 4
¼v½ lgt ,oa mikftZr çfrj{kk ¼c½ lfØ; ,oa fuf"Ø; çfrj{kk

Explain the difference in the following and give examples of each .

(A) Innate and Acquired immunity (B) Active and Passive immunity

vFkok@OR
esVkLVsfll D;k gS \ dSalj jksx ds dkj.k] funku ,oa mipkj crk,saA ¼1$1$1$1½¾ 4
What is Metastasis? Explain the causes, diagnosis and treatment of cancer-

20- fuEufyf[kr ij fVIi.kh dhft, A ¼2$2½
¼v½ [kk| J`a[kyk ,oa [kk| tky ¼c½ mRiknu ,oa vi?kVu
Comment on the following-

(A) food chain and food web (B) Production and Decomposition

vFkok@OR
ikfjfLFkfrdh fijkfeM D;k gS \ tSo Hkkj ,oa tSo la[;k ds fijkfeM dks le>k,A ¼1$½ $½½
What is ecological Pyramid? Explain the Pyramid of biomass and Pyramid of living number .