Past Year Paper - Biology (Set - 3), Delhi, 2014, Class 12, Biology | Additional Study Material for NEET PDF Download

 Page 1


Series : OSR/I
qisi.
Code No.
str{-5rtfls,T s.5q-YB
qr 
sitlw luri r
Candidates must write the Code on
the title page of the answer-book.
s7 llls
+ni.
Roll No.
o gtrrrqiqqtiiflm.gsrrrT-wr{SBdTss t r
o sFr-st { 
qri6+ 
6rq 6t o*'{ lqg 
re 
E}s;rq *} on vtn-5firor * ge-gstn ffi r
r gttfl 
qiq 
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gq 
vrr-qr { ro srq t r
. 
E 
lFflrFtqrYrcftaqqtqf{*-6r++v5d, rgto, ffiis wEgqffi t
o 
E{r 
q$T-rFr 
fttf 
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+ fldq 15 fr;re sr sErq fqqFrqr t r 
q$T-q{ 
or fumur 
Y3hq 
{ to.ts 
qQ
flffir 
sn+n 
I 10.15 
q+ 
t 10.30 
qi 
ro sn *qa rIl"I-lFt si 
qfi 
ek 
Eq 
eHftI + 
qkm 
e
wt-gk*l w 
qt{ 
sm 
qET 
flt{fi I
. 
Please check that this question paper contains 8 printed pages.
o 
Code number given on the right hand side of the question paper should be written on the
title page of the answer-book by the candidate.
o 
Please check that this question paper contains 30 questions.
o 
Please write down the Serial Number of the question before attempting it.
o 
15 minutes time has been allotted to read this question paper. The question paper will be
distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will read the
question paper only and will not write any answer on the answer-book during this period.
Efrdflildlqffi,n6)
BIOLOGY 
(TheorY)
funfuvqq :t 
Eitl 7 
af*maveb :70
Timeallowed:3 hours 
I 
t 
MaximumMarlcs:70
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:
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f{rrp"-r* 
# arrqus A, B, C 
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I [P.T.O.
Page 2


Series : OSR/I
qisi.
Code No.
str{-5rtfls,T s.5q-YB
qr 
sitlw luri r
Candidates must write the Code on
the title page of the answer-book.
s7 llls
+ni.
Roll No.
o gtrrrqiqqtiiflm.gsrrrT-wr{SBdTss t r
o sFr-st { 
qri6+ 
6rq 6t o*'{ lqg 
re 
E}s;rq *} on vtn-5firor * ge-gstn ffi r
r gttfl 
qiq 
e'rd t+ 
gq 
vrr-qr { ro srq t r
. 
E 
lFflrFtqrYrcftaqqtqf{*-6r++v5d, rgto, ffiis wEgqffi t
o 
E{r 
q$T-rFr 
fttf 
q-d+ 
+ fldq 15 fr;re sr sErq fqqFrqr t r 
q$T-q{ 
or fumur 
Y3hq 
{ to.ts 
qQ
flffir 
sn+n 
I 10.15 
q+ 
t 10.30 
qi 
ro sn *qa rIl"I-lFt si 
qfi 
ek 
Eq 
eHftI + 
qkm 
e
wt-gk*l w 
qt{ 
sm 
qET 
flt{fi I
. 
Please check that this question paper contains 8 printed pages.
o 
Code number given on the right hand side of the question paper should be written on the
title page of the answer-book by the candidate.
o 
Please check that this question paper contains 30 questions.
o 
Please write down the Serial Number of the question before attempting it.
o 
15 minutes time has been allotted to read this question paper. The question paper will be
distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will read the
question paper only and will not write any answer on the answer-book during this period.
Efrdflildlqffi,n6)
BIOLOGY 
(TheorY)
funfuvqq :t 
Eitl 7 
af*maveb :70
Timeallowed:3 hours 
I 
t 
MaximumMarlcs:70
qrqrqftT{Tf 
:
(i) ds{ratWt r
(ii) 
f{rrp"-r* 
# arrqus A, B, C 
elrO 
fi I 
qrya 
#A rwd'Frdrd+- w 
Wiifft
w€ B 
it 
tO rwff Fr+c r-d4t# ?r' 
-rl*-d qae 
C 
il g ywff 
Frd' nAt# ahsr#'f,
dsn 
qo€D itS yw 
E Frm6- #qfq€,irt r
(iii) ol{ sqr 
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@ 
aqaq ftl'i t fu 
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2 
€}i?it aid 
qta 
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it,
J d6td 
gqsw 
#.ad, s 
eH 
qd 
vfisrit C 
qft# 
arr-fu fte'rrqr* / 
ddm+
tfurf+il*+d 
qn'6? 
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(iv) E6r 
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qr{,q'qr+ 
ryd' a77t6r FIr'-Vryt dqr aZfu w I aqifu it t
s7ty3 
I [P.T.O.
General Instructions :
(i) 
All questions 
are compulsory.
(ii) 
This question paper consists of 
four 
Section A, B, C and D. Section 
- 
A. contains I
questions 
of one mark each, Section 
- 
B is of 10 questions of two marks each,
Section 
* 
C is of 9 questions 
of three marks each and Section 
- 
D is of 
j 
questions
offive marks each.
(iii) 
There is no overall choice. However, an intemal choice has been provided in one
question 
of 2 marks, one question of 3 marks and all the questions of S marks
weightage. A student has to attempt only one of the alternatives in such questions,
(iv) 
Wherever necessary, the diagrams drawn should be neat and properly 
labetted.
ETU!'. A
SECTION-A (tx8=E)
1. 3r 
qrd$ 
sifrffircii * ssq 
qT 
iIrT ftrfuq 
Eil 
ffi ffi DNA ftt r+{r wr+ + fuq 
sfrr
dE3it+witslgffi6}-frt 
I 
1
Mention the type of host cells suitable for the gene guns to introduce an alien DNA.
2. 
tS ffi * sq,r st sifttnrc+ *'=nq ft{fuq vi 
q=o;i ii 
vcq 
ytil{qrT 
r$r *.r+ + kq
'ihlfrrdbtq €rirfri, 
*'sq d *,d 
qrot 
t r
Name any two types of cells which act as 'Cellular barriers' to provide Innate Immunity
in humans.
frnrq sn$tffi 
u+ii +frqf{nffiT / eErirft 
DNA *} w[e diiqt DNA t k.e rnmysr+,.
f*,qr 
qmr 
t r
How is repetitive / satellite DNA separated from bulk genomic DNA for various genetic
experiments ?
sq +q m.r 
qH 
ftfiqq H 
.(qrfi 
q,r 
srIdEF,, 
qar qrer 
t I
write the name of the organism that is referred to as the 'Terror of Bengal,.
5. E{ 
6ftfr 
rl6r}it 
*'qrq frfuqqi FsaT afu{s.wr-+T { +rrqn 
q-r& 
t r
Name the Green House gases that contribute to total global warming.
3.
4.
Page 3


Series : OSR/I
qisi.
Code No.
str{-5rtfls,T s.5q-YB
qr 
sitlw luri r
Candidates must write the Code on
the title page of the answer-book.
s7 llls
+ni.
Roll No.
o gtrrrqiqqtiiflm.gsrrrT-wr{SBdTss t r
o sFr-st { 
qri6+ 
6rq 6t o*'{ lqg 
re 
E}s;rq *} on vtn-5firor * ge-gstn ffi r
r gttfl 
qiq 
e'rd t+ 
gq 
vrr-qr { ro srq t r
. 
E 
lFflrFtqrYrcftaqqtqf{*-6r++v5d, rgto, ffiis wEgqffi t
o 
E{r 
q$T-rFr 
fttf 
q-d+ 
+ fldq 15 fr;re sr sErq fqqFrqr t r 
q$T-q{ 
or fumur 
Y3hq 
{ to.ts 
qQ
flffir 
sn+n 
I 10.15 
q+ 
t 10.30 
qi 
ro sn *qa rIl"I-lFt si 
qfi 
ek 
Eq 
eHftI + 
qkm 
e
wt-gk*l w 
qt{ 
sm 
qET 
flt{fi I
. 
Please check that this question paper contains 8 printed pages.
o 
Code number given on the right hand side of the question paper should be written on the
title page of the answer-book by the candidate.
o 
Please check that this question paper contains 30 questions.
o 
Please write down the Serial Number of the question before attempting it.
o 
15 minutes time has been allotted to read this question paper. The question paper will be
distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will read the
question paper only and will not write any answer on the answer-book during this period.
Efrdflildlqffi,n6)
BIOLOGY 
(TheorY)
funfuvqq :t 
Eitl 7 
af*maveb :70
Timeallowed:3 hours 
I 
t 
MaximumMarlcs:70
qrqrqftT{Tf 
:
(i) ds{ratWt r
(ii) 
f{rrp"-r* 
# arrqus A, B, C 
elrO 
fi I 
qrya 
#A rwd'Frdrd+- w 
Wiifft
w€ B 
it 
tO rwff Fr+c r-d4t# ?r' 
-rl*-d qae 
C 
il g ywff 
Frd' nAt# ahsr#'f,
dsn 
qo€D itS yw 
E Frm6- #qfq€,irt r
(iii) ol{ sqr 
qq+-fuaw p*+rdra 
@ 
aqaq ftl'i t fu 
,fr, 
2 
€}i?it aid 
qta 
Yw 
it,
J d6td 
gqsw 
#.ad, s 
eH 
qd 
vfisrit C 
qft# 
arr-fu fte'rrqr* / 
ddm+
tfurf+il*+d 
qn'6? 
fuwweffi+* I
(iv) E6r 
17} ailevq€dl 
qr{,q'qr+ 
ryd' a77t6r FIr'-Vryt dqr aZfu w I aqifu it t
s7ty3 
I [P.T.O.
General Instructions :
(i) 
All questions 
are compulsory.
(ii) 
This question paper consists of 
four 
Section A, B, C and D. Section 
- 
A. contains I
questions 
of one mark each, Section 
- 
B is of 10 questions of two marks each,
Section 
* 
C is of 9 questions 
of three marks each and Section 
- 
D is of 
j 
questions
offive marks each.
(iii) 
There is no overall choice. However, an intemal choice has been provided in one
question 
of 2 marks, one question of 3 marks and all the questions of S marks
weightage. A student has to attempt only one of the alternatives in such questions,
(iv) 
Wherever necessary, the diagrams drawn should be neat and properly 
labetted.
ETU!'. A
SECTION-A (tx8=E)
1. 3r 
qrd$ 
sifrffircii * ssq 
qT 
iIrT ftrfuq 
Eil 
ffi ffi DNA ftt r+{r wr+ + fuq 
sfrr
dE3it+witslgffi6}-frt 
I 
1
Mention the type of host cells suitable for the gene guns to introduce an alien DNA.
2. 
tS ffi * sq,r st sifttnrc+ *'=nq ft{fuq vi 
q=o;i ii 
vcq 
ytil{qrT 
r$r *.r+ + kq
'ihlfrrdbtq €rirfri, 
*'sq d *,d 
qrot 
t r
Name any two types of cells which act as 'Cellular barriers' to provide Innate Immunity
in humans.
frnrq sn$tffi 
u+ii +frqf{nffiT / eErirft 
DNA *} w[e diiqt DNA t k.e rnmysr+,.
f*,qr 
qmr 
t r
How is repetitive / satellite DNA separated from bulk genomic DNA for various genetic
experiments ?
sq +q m.r 
qH 
ftfiqq H 
.(qrfi 
q,r 
srIdEF,, 
qar qrer 
t I
write the name of the organism that is referred to as the 'Terror of Bengal,.
5. E{ 
6ftfr 
rl6r}it 
*'qrq frfuqqi FsaT afu{s.wr-+T { +rrqn 
q-r& 
t r
Name the Green House gases that contribute to total global warming.
3.
4.
6. *i fqq 
qr 
rt fu 
it 
fus+ gq *,*6st tflgi,if +t ernqrmo 
{fun(. Efli+ r* t, 
eru, 
s}1. 
,e6,,
m 
t 
v6qr{ s"{{dr{g I
5M
Identify 'a' and 'b' in the figure given
major vertebrate taxa.
below representing proportionate 
number of
fuS 
frm tS 
*{ s'r .e-qrfluT *iqq 
q} 
wrfr 
C$qrqt$ 
si?rerT tl qer qrqr q.fiTr 
t, 
st{ 
{f,r{g
Er6\r€T 
*ri m'wr i r
Give an example of an organism that enters 
.diapause, 
and why.
ffi m 
qrfttie 
i[ 
wror si flm.q rotlqtfqf, t+qr 
qnr 
t r
How is 'stratification' represented in a forest ecosystem ?
7.
ENUg. B
SECTION 
- 
B
9. (i) ss ffiro 
?Fr ;nEr 
frfiqq 
W vs* 
f<qr 
qr 
fu sTEdfrffi 
Ta 
+{ 
={ksilffidi 
+
{+Htq***qrfre 
r
T6fus oilrrrrrw 
frqrd'wvgqr ss+fqw 
nf 
vqgrEq r
Name the scientist who suggested that the genetic code should
combination of three nucleotides.
Explain the basis on which he arrived at this conclusion. 
,,
3
Qxfi 
=20)
,
a
be made of a
(ii)
(i)
(ii)
s7nt3
lP.T.O.
Page 4


Series : OSR/I
qisi.
Code No.
str{-5rtfls,T s.5q-YB
qr 
sitlw luri r
Candidates must write the Code on
the title page of the answer-book.
s7 llls
+ni.
Roll No.
o gtrrrqiqqtiiflm.gsrrrT-wr{SBdTss t r
o sFr-st { 
qri6+ 
6rq 6t o*'{ lqg 
re 
E}s;rq *} on vtn-5firor * ge-gstn ffi r
r gttfl 
qiq 
e'rd t+ 
gq 
vrr-qr { ro srq t r
. 
E 
lFflrFtqrYrcftaqqtqf{*-6r++v5d, rgto, ffiis wEgqffi t
o 
E{r 
q$T-rFr 
fttf 
q-d+ 
+ fldq 15 fr;re sr sErq fqqFrqr t r 
q$T-q{ 
or fumur 
Y3hq 
{ to.ts 
qQ
flffir 
sn+n 
I 10.15 
q+ 
t 10.30 
qi 
ro sn *qa rIl"I-lFt si 
qfi 
ek 
Eq 
eHftI + 
qkm 
e
wt-gk*l w 
qt{ 
sm 
qET 
flt{fi I
. 
Please check that this question paper contains 8 printed pages.
o 
Code number given on the right hand side of the question paper should be written on the
title page of the answer-book by the candidate.
o 
Please check that this question paper contains 30 questions.
o 
Please write down the Serial Number of the question before attempting it.
o 
15 minutes time has been allotted to read this question paper. The question paper will be
distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will read the
question paper only and will not write any answer on the answer-book during this period.
Efrdflildlqffi,n6)
BIOLOGY 
(TheorY)
funfuvqq :t 
Eitl 7 
af*maveb :70
Timeallowed:3 hours 
I 
t 
MaximumMarlcs:70
qrqrqftT{Tf 
:
(i) ds{ratWt r
(ii) 
f{rrp"-r* 
# arrqus A, B, C 
elrO 
fi I 
qrya 
#A rwd'Frdrd+- w 
Wiifft
w€ B 
it 
tO rwff Fr+c r-d4t# ?r' 
-rl*-d qae 
C 
il g ywff 
Frd' nAt# ahsr#'f,
dsn 
qo€D itS yw 
E Frm6- #qfq€,irt r
(iii) ol{ sqr 
qq+-fuaw p*+rdra 
@ 
aqaq ftl'i t fu 
,fr, 
2 
€}i?it aid 
qta 
Yw 
it,
J d6td 
gqsw 
#.ad, s 
eH 
qd 
vfisrit C 
qft# 
arr-fu fte'rrqr* / 
ddm+
tfurf+il*+d 
qn'6? 
fuwweffi+* I
(iv) E6r 
17} ailevq€dl 
qr{,q'qr+ 
ryd' a77t6r FIr'-Vryt dqr aZfu w I aqifu it t
s7ty3 
I [P.T.O.
General Instructions :
(i) 
All questions 
are compulsory.
(ii) 
This question paper consists of 
four 
Section A, B, C and D. Section 
- 
A. contains I
questions 
of one mark each, Section 
- 
B is of 10 questions of two marks each,
Section 
* 
C is of 9 questions 
of three marks each and Section 
- 
D is of 
j 
questions
offive marks each.
(iii) 
There is no overall choice. However, an intemal choice has been provided in one
question 
of 2 marks, one question of 3 marks and all the questions of S marks
weightage. A student has to attempt only one of the alternatives in such questions,
(iv) 
Wherever necessary, the diagrams drawn should be neat and properly 
labetted.
ETU!'. A
SECTION-A (tx8=E)
1. 3r 
qrd$ 
sifrffircii * ssq 
qT 
iIrT ftrfuq 
Eil 
ffi ffi DNA ftt r+{r wr+ + fuq 
sfrr
dE3it+witslgffi6}-frt 
I 
1
Mention the type of host cells suitable for the gene guns to introduce an alien DNA.
2. 
tS ffi * sq,r st sifttnrc+ *'=nq ft{fuq vi 
q=o;i ii 
vcq 
ytil{qrT 
r$r *.r+ + kq
'ihlfrrdbtq €rirfri, 
*'sq d *,d 
qrot 
t r
Name any two types of cells which act as 'Cellular barriers' to provide Innate Immunity
in humans.
frnrq sn$tffi 
u+ii +frqf{nffiT / eErirft 
DNA *} w[e diiqt DNA t k.e rnmysr+,.
f*,qr 
qmr 
t r
How is repetitive / satellite DNA separated from bulk genomic DNA for various genetic
experiments ?
sq +q m.r 
qH 
ftfiqq H 
.(qrfi 
q,r 
srIdEF,, 
qar qrer 
t I
write the name of the organism that is referred to as the 'Terror of Bengal,.
5. E{ 
6ftfr 
rl6r}it 
*'qrq frfuqqi FsaT afu{s.wr-+T { +rrqn 
q-r& 
t r
Name the Green House gases that contribute to total global warming.
3.
4.
6. *i fqq 
qr 
rt fu 
it 
fus+ gq *,*6st tflgi,if +t ernqrmo 
{fun(. Efli+ r* t, 
eru, 
s}1. 
,e6,,
m 
t 
v6qr{ s"{{dr{g I
5M
Identify 'a' and 'b' in the figure given
major vertebrate taxa.
below representing proportionate 
number of
fuS 
frm tS 
*{ s'r .e-qrfluT *iqq 
q} 
wrfr 
C$qrqt$ 
si?rerT tl qer qrqr q.fiTr 
t, 
st{ 
{f,r{g
Er6\r€T 
*ri m'wr i r
Give an example of an organism that enters 
.diapause, 
and why.
ffi m 
qrfttie 
i[ 
wror si flm.q rotlqtfqf, t+qr 
qnr 
t r
How is 'stratification' represented in a forest ecosystem ?
7.
ENUg. B
SECTION 
- 
B
9. (i) ss ffiro 
?Fr ;nEr 
frfiqq 
W vs* 
f<qr 
qr 
fu sTEdfrffi 
Ta 
+{ 
={ksilffidi 
+
{+Htq***qrfre 
r
T6fus oilrrrrrw 
frqrd'wvgqr ss+fqw 
nf 
vqgrEq r
Name the scientist who suggested that the genetic code should
combination of three nucleotides.
Explain the basis on which he arrived at this conclusion. 
,,
3
Qxfi 
=20)
,
a
be made of a
(ii)
(i)
(ii)
s7nt3
lP.T.O.
r-
10. 
qaRrdt tt eia:rq;m i wr €ielsr 
*dr t, kfuq | {t 
IEFH nsr t Eti Tfi frqr 
qr 
wen t ? 2
State the disadvantage of inbreeding among cattle. How it can be overcome ?
1 1. 
q5srge6 3qr6(gr tt 
gu vrarue fs.ffi tk-flr tst1rffiq-{ 
+} 
qeilq 
wif f<qrrqr t 2
Explain with the help of a suitablq example the naming of a resffiction endonuclease.
12. tr frkwr H 
qr6+ 
t r sq F{S 
qdt 
fEfioiqr }FFtuT HT 
qrq 
fufisqffii vr+-r 
gq+r 
f+,qr
rrqT slT 
I 
2
What is gene therapy ? Name the frst clinical case where it was used'
13.316RllcorsTqFT*i+eIftIfiIffi,IrrqflTiiQ131kIfrI{6-iqwiTFlsr(Et,-frtlgqrflqti'eq
t$ftt$qt tfr*r(ffirEq 
| 
2
Apa,rt from being part of the food chain, predators play other important roles. Mention
any two such roles supported by examples.
t4. \'s'tqr 
erq trflfi{sqa1${ffit 
qrffi qrrilsT 
*t 
qrsfl+ felfrr 
q+ 
d 
ffi 
T 
+ E} t 2
Consffuct an age pyramid which reflects a stable growth status of human population.
15. tqr 
Hi t fu et aflffi{ E€ +*uJ dr Hi {6\ 
qrtf,r 
ffi 
zrd 
srdr t, 
qt gt oid:q6ul s,,{+ 
qrd 
)
+edrqrtnrt r 
2
Why does the Bt toxin not kill the bacterium that produces it but kills the insect that
ingests it ?
16. 
qq.it it 
*r r rnr ABo rfiT rqrt or t+q rfiR fuhq dnr t ? iqrm rffi *ifrrfit3it s1{sn
2
,*+{irttrlt$+re*f,Tt, 
frfuq , 
**,
ffifun ffi d 
qr* qr+ qret 
fuT-tililrsr ffiftT *.trsdi*'qrq 
tdfrsq r rds'mt \'6-
W'Yqr6rq 
fr Eli-qq 
I
(i) 
rfl-fl 
XX 
EFt;R 
XO +{rq
(ii) 
rlrEr 
ZW 
EFT;11 
ZZ +qIE
How does the gene 'I' control ABO blood groups in humans ? Write the effect the gene
has on the sffucture of red blood cells.
OR
Write the types of sex-determination 
mechanisms the following crosses show. Give an
example of each tyPe.
(i) Female XX with Male XO
(ii) Female ZW with MaleZZ
s7t1l3 
4
Page 5


Series : OSR/I
qisi.
Code No.
str{-5rtfls,T s.5q-YB
qr 
sitlw luri r
Candidates must write the Code on
the title page of the answer-book.
s7 llls
+ni.
Roll No.
o gtrrrqiqqtiiflm.gsrrrT-wr{SBdTss t r
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Please check that this question paper contains 8 printed pages.
o 
Code number given on the right hand side of the question paper should be written on the
title page of the answer-book by the candidate.
o 
Please check that this question paper contains 30 questions.
o 
Please write down the Serial Number of the question before attempting it.
o 
15 minutes time has been allotted to read this question paper. The question paper will be
distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will read the
question paper only and will not write any answer on the answer-book during this period.
Efrdflildlqffi,n6)
BIOLOGY 
(TheorY)
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General Instructions :
(i) 
All questions 
are compulsory.
(ii) 
This question paper consists of 
four 
Section A, B, C and D. Section 
- 
A. contains I
questions 
of one mark each, Section 
- 
B is of 10 questions of two marks each,
Section 
* 
C is of 9 questions 
of three marks each and Section 
- 
D is of 
j 
questions
offive marks each.
(iii) 
There is no overall choice. However, an intemal choice has been provided in one
question 
of 2 marks, one question of 3 marks and all the questions of S marks
weightage. A student has to attempt only one of the alternatives in such questions,
(iv) 
Wherever necessary, the diagrams drawn should be neat and properly 
labetted.
ETU!'. A
SECTION-A (tx8=E)
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Mention the type of host cells suitable for the gene guns to introduce an alien DNA.
2. 
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Name any two types of cells which act as 'Cellular barriers' to provide Innate Immunity
in humans.
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experiments ?
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write the name of the organism that is referred to as the 'Terror of Bengal,.
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major vertebrate taxa.
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number of
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How is 'stratification' represented in a forest ecosystem ?
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Explain the basis on which he arrived at this conclusion. 
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has on the sffucture of red blood cells.
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Write the types of sex-determination 
mechanisms the following crosses show. Give an
example of each tyPe.
(i) Female XX with Male XO
(ii) Female ZW with MaleZZ
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Identify the following pairs as Homologous or Analogous organs :
(i) Sweet potato and potato
(ii) Eye of octopus and eye of mammals
(iii) Thorns o'f Bougainvillea and tendrils of Cucurbits.
(iv) Fore limbs of Bat and Whale.
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List the post-fertilization events in angiosperms.
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(iii)
Write the status of food and space in the curves 
(a) and 
(b).
In the absence of predators, which one of the two curves would appropriately
depict the prey population ?
Time has been shown on X-axis and there is a parallel dotted line above it. Give
the significance of this dotted line.
5
(i)
(ii)
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+
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lP.T.O.