Series &RQPS/S SET-5

*RQPS/S* àíZ-nÌ H$moS>

Q.P. Code 57(B)/S
amob Z§. narjmWu àíZ-nÌ H$moS> >H$mo CÎma-nwpñVH$m Ho$
Roll No. _wI-n¥ð >na Adí` {bIo§ &
Candidates must write the Q.P. Code
on the title page of the answer-book.

ZmoQ> NOTE
(I) H¥$n`m Om±M H$a b| {H$ Bg àíZ-nÌ _o§ _w{ÐV (I) Please check that this question paper
n¥ð> 19 h¢ & contains 19 printed pages.

(II) H¥$n`m Om±M H$a b| {H$ Bg àíZ-nÌ _| (II) Please check that this question paper
>33 àíZ h¢ & contains 33 questions.

(III) àíZ-nÌ _| Xm{hZo hmW H$s Amoa {XE JE (III) Q.P. Code given on the right hand
àíZ-nÌ H$moS H$mo narjmWu CÎma-nwpñVH$m Ho$ side of the question paper should be
_wI-n¥ð> na {bI| & written on the title page of the
answer-book by the candidate.
(IV) H¥$n`m àíZ H$m CÎma {bIZm ewê$ H$aZo go (IV) Please write down the serial
nhbo, CÎma-nwpñVH$m _| àíZ H$m H«$_m§H$ number of the question in the
Adí` {bI| & answer-book before attempting it.
(V) Bg àíZ-nÌ H$mo n‹T>Zo Ho$ {bE 15 {_ZQ >H$m (V) 15 minute time has been allotted to
g_` {X`m J`m h¡ & àíZ-nÌ H$m {dVaU read this question paper. The
nydm©• _| 10.15 ~Oo {H$`m OmEJm & question paper will be distributed
10.15 ~Oo go 10.30 ~Oo VH$ N>mÌ Ho$db at 10.15 a.m. From 10.15 a.m. to
10.30 a.m., the students will
àíZ-nÌ H$mo n‹T>J| o Am¡a Bg Ad{Y Ho$ Xm¡amZ read the question paper only and
do CÎma-nwpñVH$m na H$moB© CÎma Zht {bI|Jo & will not write any answer on the
answer-book during this period.

Ord {dkmZ (g¡ÕmpÝVH$)

(Ho$db Ñ{ï>~m{YV narjm{W©`m| Ho$ {bE)
BIOLOGY (Theory)
(FOR VISUALLY IMPAIRED CANDIDATES ONLY)
{ZYm©[aV g_` : 3 KÊQ>o A{YH$V_ A§H$ : 70
Time allowed : 3 hours Maximum Marks : 70

57(B)/S 1 P.T.O.
gm_mÝ` {ZX}e :
{ZåZ{b{IV {ZX}em| H$mo Ü`mZnyd©H$ n{‹T>E Am¡a CZH$m nmbZ H$s{OE :
(i) Bg àíZ-nÌ _| 33 àíZ h¢ & g^r àíZ A{Zdm`© h¢ &
(ii) àíZ-nÌ nm±M IÊS>m| _| {d^m{OV h¡ – IÊS> H$, I, J, K Ed§ L> &
(iii) IÊS> H$ – àíZ g§»`m 1 go 16 VH$ ~hþ{dH$ënr` àH$ma Ho$ àíZ h¢ & àË`oH$
àíZ 1 A§H$ H$m h¡ &
(iv) IÊS> I – àíZ g§»`m 17 go 21 VH$ A{V bKw-CÎmar` àH$ma Ho$ àíZ h¢ & àË`oH$
àíZ 2 A§H$m| H$m h¡ &
(v) IÊS> J – àíZ g§»`m 22 go 28 VH$ bKw-CÎmar` àH$ma Ho$ àíZ h¢ & àË`oH$
àíZ 3 A§H$m| H$m h¡ &
(vi) IÊS> K – àíZ g§»`m 29 VWm 30 Ho$g-AmYm[aV àíZ h¢ & àË`oH$ àíZ 4 A§H$m| H$m
h¡ & BZ Cn-àíZm| _| go EH$ Cn-àíZ _| Am§V[aH$ {dH$ën H$m M`Z {X`m J`m h¡ &
(vii) IÊS> L> – àíZ g§»`m 31 go 33 VH$ XrK©-CÎmar` àH$ma Ho$ àíZ h¢ & àË`oH$
àíZ 5 A§H$m| H$m h¡ &
(viii) àíZ-nÌ _| g_J« {dH$ën Zht {X`m J`m h¡ & `Ú{n, IÊS> I, J VWm K _| Am§V[aH$
{dH$ën H$m àmdYmZ {X`m J`m h¡ & narjmWu H$mo BZ àíZm| _| go {H$gr EH$ àíZ H$m
CÎma {bIZm h¡ &
IÊS> H$
àíZ g§»`m 1 go 16 VH$ ~hþ{dH$ënr` àH$ma Ho$ 1 A§H$ Ho$ àíZ h¢ & 16´1=16

1. EH$qbJr nwîn CËnÞ H$aZo dmbo _mXm nm¡Yo _| H¥${Ì_ g§H$arH$aU hoVw Amdí`H$Vm
hmoVr h¡ :
(A) {dnw§gZ H$s
(B) ~¡qJJ (~moam -dñÌmdaU) H$s
(C) {dnw§gZ VWm ~¡qJJ (~moam-dñÌmdaU) H$s
(D) ~¡qJJ (~moam -dñÌmdaU) VWm [a~¡qJJ (nwZ:~moam-dñÌmdaU) H$s
57(B)/S 2
General Instructions :
Read the following instructions carefully and follow them :
(i) This question paper contains 33 questions. All questions are
compulsory.
(ii) Question paper is divided into five sections – Sections A, B, C, D
and E.
(iii) Section A – questions number 1 to 16 are multiple choice type
questions. Each question carries 1 mark.
(iv) Section B – questions number 17 to 21 are very short answer type
questions. Each question carries 2 marks.
(v) Section C – questions number 22 to 28 are short answer type
questions. Each question carries 3 marks.
(vi) Section D – questions number 29 and 30 are case-based questions.
Each question carries 4 marks. Each question has subparts with
internal choice in one of the subparts.
(vii) Section E – questions number 31 to 33 are long answer type
questions. Each question carries 5 marks.
(viii) There is no overall choice. However, an internal choice has been
provided in Sections B, C and D of the question paper. A candidate
has to write answer for only one of the alternatives in such
questions.
SECTION A
Questions no. 1 to 16 are Multiple Choice Type Questions, carrying
1 mark each. 16´1=16

1. To carry artificial hybridisation in a female parent producing

unisexual flowers, there is a need of :
(A) emasculation
(B) bagging
(C) emasculation and bagging
(D) bagging and rebagging

57(B)/S 3 P.T.O.
2. {ZåZ{b{IV nm¡Ym| _| go {H$gHo$ ~rOm|/XmZm| _| ñHw$Q>ob_ (àeëH$) nm`m OmVm h¡ ?
(A) nnrVm (B) H$nmg
(C) Zt~y (D) Kmg
3. {ZåZ{b{IV _| go EH$ {dH$ën H$mo Mw{ZE Omo _mXm {df_`w½_H$Vm (hoQ>o amoJ{o _Q>r)
Xem©Vm h¡ :
(A) S´> mogmo{\$bm (B) _wJu
(C) Mw{h`m (Myhm) (D) ˆob
4. _Ywn (_Yw_ŠIr) _| A{ZfoH$OZZ (nmW}Zmo{OZo{gg) Ho$ n[aUm_ñdê$n BgH$m
{dH$mg hmoVm h¡ :
(A) amZr _Ywn (B) ~§Ü` (Znw§gH$) l{_H$
(C) nw§_Ywn (Za S´> moZ) (D) OZZj_ l{_H$

5. ‘‘OrdZ H$s CËn{Îm Ob _| hþB© VËníMmV² dh ñWb na nhþ±Mm &’’ àm{U`m| Ho$ g§X^©
_| Bg H$WZ H$m g_W©Z H$aZo dmbo gdm©oÎm_ {dH$ën H$mo Mw{ZE :
(A) {Obo{Q>Zr ñWyb nXmW© Ho$ ê$n _| CnpñWV
(B) ~hþV A{YH$ g§»`m _| CËnmXZ
(C) _moQo H$dM dmbo A§S>o
(D) Obr` _mÜ`_ _| CnpñWV
6. AmYw{ZH$ (dV©_mZ g_` Ho$) _mZd H$m {ZH$Q>V_ nyd©O h¡ :
(A) hmo_moo BaoŠQ>g
(B) hmo_mo h¡{~{bg
(C) {Z`§S>a>Q>mb _mZd>
(D) AmoñQ´>mbmo{nWo{gZ
7. XmÌ H$mo{eH$m Aaº$Vm ({gH$b gob E{Z{_`m) h¡ :
(A) EH$ qbJ ghb½Z Aà^mdr amoJ
(B) EH$ AqbJgyÌr Aà^mdr amoJ
(C) H«$mo_mogmo_r` {dnWZ Ho$ H$maU hmoVm h¡
(D) CËn[adV©OZ (å`yQ>mOZ) Ûmam hmoVm h¡
57(B)/S 4
2. Which one of the following has scutellum in its seed/grain ?
(A) Papaya (B) Cotton
(C) Lemon (D) Grass

3. Select one option from the following that exhibits female

heterogamety.
(A) Drosophila (B) Hen
(C) Mouse (D) Whale

4. Parthenogenesis in honey bees results in development of :

(A) queen bee (B) sterile worker
(C) male drone (D) fertile worker

5. ‘‘Life originated in water and then moved to land.’’ Select the

best option that supports this statement with reference to
animals.
(A) Present in a gelatinous mass
(B) Laid in large numbers
(C) Thick-shelled eggs
(D) Present in aquatic medium

6. The nearest ancestor of modern day man is :

(A) Homo erectus
(B) Homo habilis
(C) Neanderthal man
(D) Australopithecines

7. Sickle cell anaemia is :

(A) a sex-linked recessive disease
(B) an autosomal recessive disease
(C) caused by chromosomal aberrations
(D) caused by mutagens
57(B)/S 5 P.T.O.
8. ABO é{Ya dJ© BgH$m EH$ CXmhaU h¡ :
(A) AnyU© à^m{dVm (B§H$åßbrQ> S>mo{_Z|g) VWm ghà^m{dVm (H$moS>mo{_Z|g)
(B) AnyU© à^m{dVm VWm ñdV§Ì Anì`yhZ
(C) ghà^m{dVm VWm ~hþAbrbVm (_ëQ>rnb Eo{b{bµÁ_)
(D) {dg§`moOZ VWm AnyU© à^m{dVm

9. {ZåZ{b{IV _| go H$m¡Z-gm A{^bjU ßbrhm Ho$ {bE bmJy Zht hmoVm h¡ ?

(A) `h go_ Ho$ AmH$ma H$m EH$ ~‹S>m A§J h¡ &
(B) `h é{Ya {Zñ`§XH$ ({\$ëQ> a) Ho$ ê$n _| H$m`© H$aVm h¡ &
(C) `h bmb é{Ya H${UH$mAm| H$m ~‹S>m ^§S>maH$ h¡ &
(D) {H$gr ì`{º$ H$s C_« ~‹T >Zo Ho$ gmW BgH$m AmH$ma KQ>Vm OmVm h¡ &

10. ‘b¡H$ ’ àMmboH$ (b¡H$ Amonoam°Z) _| µOoS> (z) OrZ ~rQ>m-J¡boŠQ>mogmBS>oO H$m
Hy$Q>boIZ H$aVm h¡, Omo _ybV: ________ Ho$ Ob-AnKQ>Z ({dKQ>Z) Ho$ {bE
CÎmaXm`r h¡ &
(A) b¡ŠQ>moO (B) gwH«$moO
(C) \«$ŠQ>moO (D) Eo{_bmoO

11. {dH${gV (~ZmE) {H$E JE 95% nmaOrZr O§Vw (àmUr) h¢ :

(A) Jm` (B) _N>br
(C) eeH$ (IaJmoe) (D) Myho

12. {ZåZ{b{IV _| go H$m¡Z-gm àmUr naOrdr Zht h¡ ?

(A) Oy± (bmBg)
(B) {H$bZr
(C) H$m°nrnmoS
(D) _mXm _ÀN>a

57(B)/S 6
8. ABO blood group is an example of :
(A) incomplete dominance and codominance
(B) incomplete dominance and independent assortment
(C) codominance and multiple allelism
(D) segregation and incomplete dominance

9. Which one of the following characteristics listed below does

not apply to the spleen ?
(A) It is a large bean shaped organ.
(B) It acts as a filter of blood.
(C) It is a large reservoir of erythrocytes.
(D) Its size reduces with the growth of the individual.

10. In ‘lac’ operon z gene codes for beta-galactosidase, which is

primarily responsible for the hydrolysis of :
(A) lactose (B) sucrose
(C) fructose (D) amylose

11. 95% of the transgenic animals developed are :

(A) cows (B) fish
(C) rabbits (D) mice

12. Which one of the following is not a parasite ?

(A) Lice
(B) Tick
(C) Copepod
(D) Female mosquito

57(B)/S 7 P.T.O.
àíZ g§»`m 13 go 16 Ho$ {bE, Xmo H$WZ {XE JE h¢ — {OZ_| EH$ H$mo A{^H$WZ
(A) VWm Xÿgao H$mo H$maU (R) Ûmam A§{H$V {H$`m J`m h¡ & BZ àíZm| Ho$ ghr CÎma
ZrMo {XE JE H$moS>m| (A), (B), (C) Am¡a (D) _| go MwZH$a Xr{OE &
(A) A{^H$WZ (A) Am¡a H$maU (R) XmoZm| ghr h¢ Am¡a H$maU (R), A{^H$WZ
(A) H$s ghr ì¶m»¶m H$aVm h¡ &
(B) A{^H$WZ (A) Am¡a H$maU (R) XmoZm| ghr h¢, naÝVw H$maU (R),
A{^H$WZ (A) H$s ghr ì¶m»¶m Zht H$aVm h¡ &
(C) A{^H$WZ (A) ghr h¡, naÝVw H$maU (R) µJbV h¡ &
(D) A{^H$WZ (A) µJbV h¡, naÝVw H$maU (R) ghr h¡ &
13. A{^H$WZ (A) : Zm[a`b Ho$ ^y«ÊmH$mof _| Ho$ÝÐH$ H$m g_gyÌr {d^mOZ _wº$ H|$ÐH$s
hmoVm h¡ &
H$maU (R) : H|$ÐH$s {d^mOZ Ho$ Vwa§V ~mX H$mo{eH$m {^{Îm H$s aMZm hmoVr h¡ &
14. A{^H$WZ (A) : 5¢ ® 3¢ Yw«dUVm dmbr S>rEZE aÁOw Omo àmoQ>rZ Ho$ {bE H$moqS>J
Zht H$aVr dh H$moqS>J aÁOwH$ h¡ &
H$maU (R) : EH$ AZwboIZ BH$mB© H$mo n[a^m{fV H$aVo g_` g^r {Z{X©îQ>
{~ÝXþAm| H$mo H$moqS>J aÁOwH$ Ho$ g§X^© _| hr A{^ì`º$ {H$`m
OmVm h¡ &
15. A{^H$WZ (A) : `H¥$VemoY-~r (honoQ>mB{Q>g-B) Q>rH$m H$m {Z_m©U `rñQ> go {H$`m
OmVm h¡ &
H$maU (R) : Q>rHo$ ~ZmZo _| g^r àH$ma Ho$ gyú_Ordr ghm`H$ h¢ &
16. A{^H$WZ (A) : Š`m|{H$ S>rEZE EH$ ObamJr AUw h¡, AV: `h H$mo{eH$m
{Pëbr go nmaJå` (hmoH$a JwµOa gH$Vm) h¡ &
H$maU (R) : Bg{bE S>rEZE H$mo ñdrH$ma H$aZo hoVw OrdmUw H$mo{eH$mAm| H$mo
gd©àW_ gj_ ~Zm`m OmZm AË`mdí`H$ h¡ &
57(B)/S 8
For Questions number 13 to 16, two statements are given — one
labelled as Assertion (A) and the other labelled as Reason (R).
Select the correct answer to these questions from the codes (A),
(B), (C) and (D) as given below.
(A) Both Assertion (A) and Reason (R) are true and Reason
(R) is the correct explanation of the Assertion (A).
(B) Both Assertion (A) and Reason (R) are true, but Reason
(R) is not the correct explanation of the Assertion (A).
(C) Assertion (A) is true, but Reason (R) is false.
(D) Assertion (A) is false, but Reason (R) is true.

13. Assertion (A) : In coconut, mitotic divisions of nuclei in the

embryo sac are free nuclear.
Reason (R) : Nuclear divisions are followed immediately by
cell wall formation.

14. Assertion (A) : The DNA strand which has the polarity 5¢ t 3¢,
does not code for protein is the coding strand.
Reason (R) : All the reference point while defining a
transcription unit is made with a coding
strand.

15. Assertion (A) : Hepatitis-B vaccine is produced from yeast.

Reason (R) : All types of microorganisms help to prepare
vaccines.

16. Assertion (A) : Since DNA is a hydrophilic molecule, it can

pass through cell membranes.
Reason (R) : Hence, bacterial cells must be first made
competent to take up DNA.

57(B)/S 9 P.T.O.
 IÊS> I
17. (i)br{S>J H$mo{eH$mAm| VWm (ii) gQ>m}br H$mo{eH$mAm| H$s AdpñW{V VWm àH$m`©
{b{IE & 2

18. AmZwd§{eH$ Hy$Q> H$s {H$Ýht Xmo à_wI {deofVmAm| H$mo CëboI H$s{OE & 2

19. {M{H$ËgH$m| Ho$ {bE à{VO¡{dH$m| H$s ghr _mÌm {ZYm©aU H$aZo Ed§ g§ñVw{V hoVw
CZHo$ Ûmam AnZmE OmZo dmbo _mZX§S>m| H$m CëboI H$s{OE & 2

20. _yb H$mo{eH$m (ñQ>_o gob) àm¡Úmo{JH$s Ho$ H$moB© Xmo AZwà`moJ {b{IE & 2

21. (H$) Eogr {H$gr EH$ Om{V (ñnrerµO) H$m CXmhaU {b{IE Omo Cgr nm[aV§Ì
_| EH$ hr g_` _| EH$ go A{YH$ nmofr ñVam|o _| A{YpîR>V hmoVr h¡ Am¡a
g_PmBE H¡$go & 2
AWdm
(I) øy_g Š`m h¡ ? BgHo$ àH$m`© {b{IE & 2

IÊS> J
22. {H$gr ñÌr (_mZd _mXm) _| A§S>OZZ à{H«$`m Ho$ {d{^Þ MaUm| H$mo {b{IE &
({ddaU H$s Amdí`H$Vm Zht h¡) 3

23. A§Vam}nU (Båßbm§ Q>eo Z) Š`m h¡ ? Bg àH«$_ Ho$ Vwa§V ~mX hmoZo dmbo {d{^Þ
n[adV©Z H$m¡Z-go h¢ ? 3

24. (H$) EH$ gm_mÝ` nwéf hr_mo\$s{b`m H$s dmhH$ Zmar (ñÌr) Ho$ gmW {ddmh
H$aVm h¡ & Bg `wJb go OÝ_ boZo dmbr dmhH$ nw{Ì`m| VWm amoJJ«ñV nwÌm|
H$m g§^mì` à{VeV {b{IE &
(I) Š`m hmoJm `{X Bg amoJ H$s EH$ dmhH$ Zmar H$m {ddmh amoJr nwéf Ho$ gmW
hmo OmE ? ì`m»`m H$s{OE &
(J) AmZwd§{eH$Vm Ho$ Bg à{Vê$n (n¡Q>Z©) H$mo Š`m H$hVo h¢ ? 3

57(B)/S 10
 SECTION B

17. Write the location and function of (i) Leydig cells and
(ii) Sertoli cells. 2

18. Mention any two salient features of genetic code. 2

19. State the parameters for medical professionals to prescribe the

correct dosage of antibiotics. 2

20. Write any two applications of stem cell technology. 2

21. (a) Give an example of a species which may occupy more

than one trophic level in the same ecosystem at the same
time and explain how. 2
OR
(b) What is humus ? Write its function. 2

SECTION C

22. Write the various steps in the process of oogenesis in a human

female. (explanation is not required) 3

23. What is implantation ? What are the immediate changes that

occur after the process ? 3

24. (a) A normal man marries a haemophilia carrier woman.

Write the percentage of carrier daughters and sufferer
sons of the disease that could be born to this couple.

(b) What would happen in case a carrier mother for the

disease marries a sufferer man ? Explain.

(c) What is such a pattern of inheritance called ? 3

57(B)/S 11 P.T.O.
25. H$eoéH$s Ordm| Ho$ ^«yUm| H$m AÜ``Z {dH$mg Ho$ àH«$_ H$mo g_PZo _| {H$g
àH$ma ghm`H$ h¡ ? nm¡Ym| go EH$ CXmhaU H$s ghm`Vm go à_mU H$s ì`m»`m
H$s{OE & 3

26. (H$) Eogo EH$ àmMrZV_ ImÚ nXmW© H$m Zm_ {b{IE {Og_| gyú_Ordm| H$m
Cn`moJ {H$`m OmVm Wm &
(I) Cn`wº© $ C{ëb{IV ImÚ Amhma Ho$ A{V[aº$ {H$Ýht Xmo ImÚ nXmWmªo H$m
CëboI H$s{OE {OZ_| gyú_Ordm| H$s Amdí`H$Vm hmoVr h¡ & BZ gyú_Ordm|
H$s ^y{_H$m ^r {b{IE & 3

27. (H$) ‘‘AmO Ho$ g_` (dV©_mZ H$mb) _| à{VO¡{dH$m| H$s AZwnpñW{V ({dhrZ)
g§gma H$s h_ H$ënZm ^r Zht H$a gH$Vo &’’ Bg H$WZ Ho$ g_W©Z _| {H$Ýht
VrZ amoJm| Ho$ Zm_ {b{IE {OZH$m CnMma (BbmO) à{VO¡{dH$m| H$s ghm`Vm
go {H$`m Om gH$Vm h¡ & 3

AWdm
(I) EH$ CËn[ad{V©V OrZ H$s nhMmZ H$aZo _| {d{H$aU g{H«$` nar{jÌ (àmo~)
{H$g àH$ma ghm`H$ h¡ ? 3

28. (H$) Am`w {na¡{_S> H$m {Z_m©U H¡$go {H$`m OmVm h¡ ?

(I) àgmar (~‹T>Vo hþE) Am`w {na¡{_S> H$s ì`m»`m H$s{OE & 3

57(B)/S 12
25. How does the study of embryos of vertebrates help to
understand evolution ? Explain the evidence with the help of
an example from plants. 3

26. (a) Name one of the oldest food items in which microbes were
used.

(b) Mention any two food items other than the one
mentioned above which require microorganisms. Write
the role played by these microorganisms. 3

27. (a) ‘‘Today, we cannot imagine a world without antibiotics.’’

Substantiate this statement with the names of any three
diseases which can be treated with antibiotics. 3

OR

(b) How does a radioactive probe help to detect a mutated

gene ? 3

28. (a) How is an age pyramid constructed ?

(b) Explain an expanding age pyramid. 3

57(B)/S 13 P.T.O.
 IÊS> K
àíZ g§»`m 29 VWm 30 Ho$g-AmYm[aV àíZ h¢ & àË`oH$ àíZ Ho$ 3 Cn-àíZ h¢ {OZ_| go
EH$ Cn-àíZ _| Am§V[aH$ {dH$ën {X`m J`m h¡ &
29. ZrMo {XE JE AZwÀN>Xo H$mo n{‹T>E Am¡a {ZåZ{b{IV àíZm| Ho$ CÎma Xr{OE &
amoJ Ho$ ghr {ZXmZ go amoJm| Ho$ g_` na g_w{MV CnMma _| ghm`Vm
{_bVr h¡ & nrgrAma {ZXmZ H$s EH$ AË`§V _hÎdnyU© VH$ZrH$ h¡, {OgH$m Cn`moJ
‘‘H$mo{dS>-19’’ _hm_mar Ho$ g_` _| ‘‘H$mo{dS>-19’’ Ho$ {ZXmZ Ho$ {bE XjVmnyd©H$
Am¡a à^mdr ê$n go {H$`m J`m & Bg VH$ZrH$ na AmYm[aV {ZåZ{b{IV àíZm| Ho$
CÎma Xr{OE &
(H$) ‘nrgrAma’ H$m {dñV[aV ê$n {b{IE & 1
(I) (i) CëboI H$s{OE {H$ {H$gr amoJ H$s àma§{^H$ AdñWm _| nhMmZ H$aZo
_| `h VH$ZrH$ {H$g àH$ma ghm`H$ h¡ & 2
AWdm
(I) (ii) nrgrAma _| Cn`moJ {H$E OmZo dmbo Q>¡H$ nm°br_aoO Ho$ à_wI
A{^bjU {b{IE VWm BgHo$ òmoV Ord H$m d¡km{ZH$ Zm_ ^r
{b{IE & 2
(J) nrgrAma Ho$ àH«$_ _| Amdo{ð>V {d{^Þ MaUm| H$s gyMr ~ZmBE &$ 1

30. ZrMo {XE JE AZwÀN>Xo H$mo n{‹T>E Am¡a {ZåZ{b{IV àíZm| Ho$ CÎma Xr{OE &
O¡d-{d{dYVm n¥Ïdr H$m EH$ à_wI IOmZm h¡ & naÝVw Xþ^m©½`de, {d{^Þ
H$m`©H$bmnm| Ho$ H$maU O¡d-{d{dYVm H$mo ˜Vam bJmVma ~‹T>Vm Om ahm h¡ & g_yMo
{díd Ho$ nm[apñW{VH$s{dX², n`m©daU{dX² VWm d¡km{ZH$ n¥Ïdr na O¡d-{d{dYVm Ho$
g§ajU hoVw AWH$ n[al_ H$a aho h¢ & am_ga joÌ Bg àH$ma H$m EH$ CXmhaU h¡ &
‘am_ga’ joÌm| na AmYm[aV {ZåZ{b{IV àíZm| Ho$ CÎma Xr{OE &
(H$) (i) am_ga joÌm| H$m _hÎd {b{IE & BÝh| Bg Zm_ go Š`m| nwH$mam OmVm
h¡ ? 2
AWdm
57(B)/S 14
 SECTION D
Questions No. 29 and 30 are case-based questions. Each question
has 3 sub-questions with internal choice in one sub-question.

29. Read the passage given below and answer the questions that
follow.
A correct diagnosis leads to proper and timely treatment of the
diseases. PCR is one of the very important diagnostic
technique which was very efficiently and effectively used
during ‘‘COVID-19’’ pandemic for the diagnosis of ‘‘COVID-19’’.
Answer the questions based on this technique.
(a) Expand ‘PCR’. 1
(b) (i) State, how does this technique help in early
diagnosis of any disease. 2
OR
(b) (ii) Write the salient features of Taq polymerase used
in PCR and write the scientific name of its source
organism. 2
(c) List the different steps involved in carrying out the
process of PCR. 1

30. Read the passage given below and answer the questions that
follow.
Biodiversity is one of the major treasures of the Mother Earth.
Unfortunately there are continuous threats to biodiversity
because of various activities. Ecologists, environmentalists and
scientists over the world are working tirelessly to conserve
biodiversity on Earth. Ramsar sites are one of such examples.
Answer the questions based on ‘Ramsar’ sites.
(a) (i) State the importance of Ramsar sites. Why they are
called by this name ? 2
OR

57(B)/S 15 P.T.O.
 (ii) (I){H$Z àmH¥${VH$ Amdmg joÌm| H$mo am_ga joÌm| Ho$ A§VJ©V aIm
J`m h¡ ?
(II) ^maV _| am_ga joÌm| Ho$ Xmo CXmhaU {b{IE & 2
(I) ^maV _| _mZd-{Z{_©V am_ga joÌ H$m EH$ CXmhaU {b{IE & > 1
(J) am_ga g§{Y na gd©àW_ hñVmja H$aZo dmbo Xoe (amîQ´>) H$m Zm_ {b{IE & 1

IÊS> L>

31. (H$) Jwé~rOmUwOZZ Š`m h¡ ? EH$ Amd¥V~rOr _| ~¥hV² Jwé~rOmUw _mV¥ H$mo{eH$m
go EH$ n[anŠd ^«yUH$mof Ho$ {dH${gV hmoZo H$m AZwaoIU H$s{OE & 5

AWdm
(I) (i) _mZd _| ~§Ü`Vm Ho$ {H$Ýht Xmo H$maUm| H$m CëboI H$s{OE &
(ii) nmÌo {ZfoMZ _| ‘AmB©drE\$’ EH$ VH$ZrH$ h¡ Omo g§VmZ n¡Xm H$aZo _|
Ag_W© X§n{V`m| H$mo g§VmZ àm{ßV _| ghm`H$ h¡ & Bg VH$ZrH$ H$m
dU©Z H$s{OE {Og_| ‘µOoS>AmB©E\$Q>r’ VWm ‘AmB©`yQ>r’ H$m {deof
CëboI {H$`m J`m hmo & 5

32. (H$) H$maU XoVo hþE g_PmBE {H$ S>rEZE hr _w»`V: AmZwd§{eH$ nXmW© h¡,
AmaEZE Zht & 5

AWdm
(I) (i) Amono[aZ VWm hmbS>oZ Ûmam à{Vnm{XV n[aH$ënZm H$m dU©Z H$s{OE &
(ii) Eg.Eb. {_ba Zo CZH$s n[aH$ënZm H$s àm`mo{JH$ à_mU Ûmam {H$g
àH$ma nwpîQ> H$s ? ì`m»`m H$s{OE &> 5

57(B)/S 16
 (ii) (I) Which natural habitat sites are covered by
Ramsar sites ?
(II) Give two examples of Ramsar sites in India. 2
(b) Give an example of a man-made Ramsar site in India. 1

(c) Name the country that was amongst the first one to sign
the Ramsar treaty. 1

SECTION E

31. (a) What is megasporogenesis ? Trace the development of a

large megaspore mother cell to a mature embryo sac in
an angiosperm. 5
OR

(b) (i) Mention any two reasons for causing infertility in

humans.
(ii) ‘IVF’ in vitro fertilisation is a technique that has
helped childless couple to bear children. Describe
the technique giving special mention of ‘ZIFT’ and
‘IUT’. 5

32. (a) Explain giving reasons why DNA is the predominant

genetic material and not RNA. 5
OR

(b) (i) State Oparin and Haldane hypothesis.

(ii) How did S.L. Miller prove their hypothesis

experimentally ? Explain. 5
57(B)/S 17 P.T.O.
33. (H$) _mZd _| {MH$ZJw{Z`m amoJ H¡$go hmoVm h¡ VWm `h H¡$go \¡$bVm h¡ ? Bg amoJ
Ho$ bjU H$m¡Z-go h¢ ? BgH$mo \¡$bZo go {H$g àH$ma amoH$m Om gH$Vm h¡ ? 5

AWdm
(I) dm{hV _b Ho$ {ÛVr`H$ CnMma AWdm Ord{dkmZr` CnMma H$m dU©Z Cg
AdñWm VH$ H$s{OE O~ `h ñdÀN> Ob Ho$ àmH¥${VH$ òmoVmo| _| àdm{hV
(H$aZo `mo½` hmo OmVm h¡) {H$`m OmVm h¡ & 5

57(B)/S 18
33. (a) How is Chikungunya caused and spread in humans ?
What are its symptoms ? How can its spread be
prevented ? 5

OR

(b) Describe the process of secondary treatment or biological

treatment of sewage water up to the point when it is
released into freshwater bodies. 5

57(B)/S 19 P.T.O.