Past Year Paper - Biology (Set - 2), Delhi, 2014, Class 12, Biology | Additional Study Material for NEET PDF Download

 Page 1


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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.
r 
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.
t 
arftt*rdq aiq :70
I 
Matcimum Marks : 70
EftEFd-{rt1sq1|ffi)
BIOLOGY 
(Theory)
(ii) 
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q6r ,tI ailqvrtdt, 
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Page 2


Series : OSR/I
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Time allowed: 3 hours 
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Code No.
ffi{-YRilfirs,'{e-YE
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qiq 
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Ekd Ts 
E t r
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qq 
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ft} 
qfi 
.t{ 
{s 
elqfu + +{T +
Etr{-gfikr*,r 
rrc q]t 
str{ 
q6T 
firti'} r
o 
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.
r 
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.
t 
arftt*rdq aiq :70
I 
Matcimum Marks : 70
EftEFd-{rt1sq1|ffi)
BIOLOGY 
(Theory)
(ii) 
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(iv) 
q6r ,tI ailqvrtdt, 
q-flq'qr+ 
ald' 
.rntq 
glFgrrt 
aar w1fud aq I 
qTqifu 
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57tuz lP.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 mnrks each and Section 
- 
D is of 3 questions
offive marks each.
(iii) There is no overall choice. However, an internal choice has been provided in one
question of 2 marks, one question of 3 marlcs and all the questions of 5 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 labetled.
Epit- A
SECTION. A
1. F{fiH 
qrrq*qoT 
H} d 
sTrqr 
m,{dr 
t 
qcrEe 
r
State the cause of Accelerated Eutrophication.
(1x8=E)
1
2. +n' ftq 
qr 
{t flTd { ffi gq *,{isql H,;if dr ereqTPf,*. 
d{ilr( wt+ 
'rs 
t 
,.u,, 
gfu' 
re6,
Hr t, 
q6qm 
ir'{rdlqg 
I 
I
Identify 'a' and 'b' in the figure given below representing proportionate number of
major vertebrate taxa.
57tU2
Page 3


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Roll No.
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j 
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Time allowed: 3 hours 
l
ntqrqtTtvl:
(i) afrqwffit r
Eits.i.
Code No.
ffi{-YRilfirs,'{e-YE
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€rq{qfnrri r
Candidates must write the Code on
the title page of the answer-book.
s7lll2
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!ffir 
qiq 
*,-{ d flo.qs ,Rq-qr { 
Ekd Ts 
E t r
o llq;I-rrrt 
i[ 
EIki Erq ft1 
eitfqqrqsisqq{si or* wc-gRTs,r +.5e-Yoa.nffi r
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Stffiq?qwdfogsltrt-rlrii 
so swt r
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glFrqTy*rfrqqrvJ66,r++q6t, 
sfjTi5,ri5,qti5^ Wqyqftrd t
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s} 
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IFhq 
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to.ts d
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qq 
t 10.30 
q+ 
{iF 6Er ir+e 
qgq-rH 
ft} 
qfi 
.t{ 
{s 
elqfu + +{T +
Etr{-gfikr*,r 
rrc q]t 
str{ 
q6T 
firti'} r
o 
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.
r 
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.
t 
arftt*rdq aiq :70
I 
Matcimum Marks : 70
EftEFd-{rt1sq1|ffi)
BIOLOGY 
(Theory)
(ii) 
wsqr-writqrrqoel,, 
B, c 
el)ro 
S I sry,t #a rw*Filil+rdowWei€t
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it 
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w'* 
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dc'nl+
tfirir#+il*q'dw-6+ fu ryrrtnitr& I
(iv) 
q6r ,tI ailqvrtdt, 
q-flq'qr+ 
ald' 
.rntq 
glFgrrt 
aar w1fud aq I 
qTqifu 
it t
57tuz lP.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 mnrks each and Section 
- 
D is of 3 questions
offive marks each.
(iii) There is no overall choice. However, an internal choice has been provided in one
question of 2 marks, one question of 3 marlcs and all the questions of 5 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 labetled.
Epit- A
SECTION. A
1. F{fiH 
qrrq*qoT 
H} d 
sTrqr 
m,{dr 
t 
qcrEe 
r
State the cause of Accelerated Eutrophication.
(1x8=E)
1
2. +n' ftq 
qr 
{t flTd { ffi gq *,{isql H,;if dr ereqTPf,*. 
d{ilr( wt+ 
'rs 
t 
,.u,, 
gfu' 
re6,
Hr t, 
q6qm 
ir'{rdlqg 
I 
I
Identify 'a' and 'b' in the figure given below representing proportionate number of
major vertebrate taxa.
57tU2
3.
4.
5.
7.
8.
ffi 
f'o t+ 
=ftq 
s'r EqrgruT {Frq 
cil 
Bqrfr 
Fqr+$ 
€itr€n il qm qqr ifiin 
t, 
ofu 
qflr{q
qe qx, 
wimtrri r
Give an example of an organism that enters 'diapause' and why.
ts-{ * smfi 
qrqifuit*'qrq 
frfrsqfqr 
qrrraq 
rfi-qqh{ 
g{T{r 
cfrfi-qdrw q,-{+ 
+flmq
F-t{Etdr tnrfu.ug*'qrqlqoqqqM *T 
qd+fi 
qq*?-fr 
d *r*' r
Name the two intermediate hosts which the human liver fluke depends on to complete
its life cycle so as to facilitate parasitization of its primary host. :
sq 
qrql+ 
slftrq,reTf *' rsq sr 
qrrT 
ftfuq 
q} 
ffi |ffifu DNA sl saqr s.{-+ + frq dq
Ei{qif+sqilsqTmEt-trt 
I
Mention the type of host cells suitable for the gene guns to introduce an alien DNA.
tS 
frtai 
qi 
ron 61 ftlfue,re+ *'qrq frkq vi 
q4;1 ii 
rree 
yf{rqTr 
rqrq E-{+ + fuq
'siffiq €iqiftdt' 
*'sq 
ii 
$d mr& t r
Name any two types of cells which act as 'Cellular barriers' to provide Innate Immunity
in humans.
AA
iirrii{HEr[ oNa e-gsqf,rHT *{rt*,sr+meiart, 
qoeq 
I
Mention how does DNA polymorphism arise in a population.
d€ +q $r 
q'q 
frkqftilt'6rn€ sT sfidEr,, ;nar qrar 
* r
write the name of the organism that is referred to as the 'Terror of Bengal'.
ETUiS:- B
SECTION 
- 
B (2x10 
=20\
9. 
qr{dqt+ 
wrrr 
q;uif 
t 
qflTrqq' 
Hqr 
ttrSr 
Cqrd-+cT Wt 
da'q}O FH-k{ srdk{r 
qErql 
+ 
q+
*e t, sq+qrq ftfuq I 
q=T{ 
t 
qwr{{ 
a+ 
tpr*, 
{Ersn{q l 2
Name the organic materials the exine and intine of an angiosperm pollen grains are
made up of . Explain the role of exine.
10. (i) Es 
ffir*., 
EET ;rH 
frfuq fuci gflq fqqrum t*. o{rsifrm qrc +r qtffis@ 
+
{iqiffi t r* riqr 
qfrq 
I
(ii) T6 trs silrrr 
q{ 
E€ M w 
qilqr 
ss+ fqw 
it 
srarEq r 
2
(i) 
Name the scientist who suggested that the genetic code should be made of a
combination of three nucleotides.
(ii) Explain the basis on which he arrived at this conclusion.
tP.T.O.
Page 4


Series : OSR/I
ripr=i.
Roll No.
fuifftdsqq ; 
j 
Eitl
Time allowed: 3 hours 
l
ntqrqtTtvl:
(i) afrqwffit r
Eits.i.
Code No.
ffi{-YRilfirs,'{e-YE
Y{ 
€rq{qfnrri r
Candidates must write the Code on
the title page of the answer-book.
s7lll2
o 
!ffir 
qiq 
*,-{ d flo.qs ,Rq-qr { 
Ekd Ts 
E t r
o llq;I-rrrt 
i[ 
EIki Erq ft1 
eitfqqrqsisqq{si or* wc-gRTs,r +.5e-Yoa.nffi r
e 
Stffiq?qwdfogsltrt-rlrii 
so swt r
o 
![rFn 
glFrqTy*rfrqqrvJ66,r++q6t, 
sfjTi5,ri5,qti5^ Wqyqftrd t
. y€ qFr-q:r 
s} 
q6+ 
+fdq ts ftr;ra 
qil qlrq 
tqqrrqt t' r sw-qx +t katur 
IFhq 
if 
to.ts d
fuqr 
qrhn 
I 10.15 
qq 
t 10.30 
q+ 
{iF 6Er ir+e 
qgq-rH 
ft} 
qfi 
.t{ 
{s 
elqfu + +{T +
Etr{-gfikr*,r 
rrc q]t 
str{ 
q6T 
firti'} r
o 
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.
r 
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.
t 
arftt*rdq aiq :70
I 
Matcimum Marks : 70
EftEFd-{rt1sq1|ffi)
BIOLOGY 
(Theory)
(ii) 
wsqr-writqrrqoel,, 
B, c 
el)ro 
S I sry,t #a rw*Filil+rdowWei€t
soe B 
it 
tO sw*Frrc rF+qF # aio,+,-d 
we C 
it 
g ywf, 
F?'tc' eFt-r#aftre7a,'f
dstTw€D tl sw$Frd'vdqr*qfqei6* r
(iii) olt aqr 
qqq-fu 
fattawfu 
qrW 
aw*r a# * t fw 
qT, 
2 
€)i?if atd 
W 
sw 
4
i 
ei6t ard 
vaywd 
drs # 
qd 
fr* vnit n 
qffi qql-fqrfl&r 
w'* 
I 
dc'nl+
tfirir#+il*q'dw-6+ fu ryrrtnitr& I
(iv) 
q6r ,tI ailqvrtdt, 
q-flq'qr+ 
ald' 
.rntq 
glFgrrt 
aar w1fud aq I 
qTqifu 
it t
57tuz lP.T.O.
General Instructions :
(i) 
All questions are compulsory.
(ii) 
This question paper consists of 
four 
Section A, B, C and D. Section 
- 
A contains I
questions of one mark each, Section 
* 
B is of 10 questions of two marks each,
Section 
- 
C is of 9 questions of three mnrks each and Section 
- 
D is of 3 questions
offive marks each.
(iii) There is no overall choice. However, an internal choice has been provided in one
question of 2 marks, one question of 3 marlcs and all the questions of 5 marks
weightage.'A student has to attempt only one of the alternatives in such questions.
(iv) 
Wherever necessary, the diagrams drawn should be neat and properly labetled.
Epit- A
SECTION. A
1. F{fiH 
qrrq*qoT 
H} d 
sTrqr 
m,{dr 
t 
qcrEe 
r
State the cause of Accelerated Eutrophication.
(1x8=E)
1
2. +n' ftq 
qr 
{t flTd { ffi gq *,{isql H,;if dr ereqTPf,*. 
d{ilr( wt+ 
'rs 
t 
,.u,, 
gfu' 
re6,
Hr t, 
q6qm 
ir'{rdlqg 
I 
I
Identify 'a' and 'b' in the figure given below representing proportionate number of
major vertebrate taxa.
57tU2
3.
4.
5.
7.
8.
ffi 
f'o t+ 
=ftq 
s'r EqrgruT {Frq 
cil 
Bqrfr 
Fqr+$ 
€itr€n il qm qqr ifiin 
t, 
ofu 
qflr{q
qe qx, 
wimtrri r
Give an example of an organism that enters 'diapause' and why.
ts-{ * smfi 
qrqifuit*'qrq 
frfrsqfqr 
qrrraq 
rfi-qqh{ 
g{T{r 
cfrfi-qdrw q,-{+ 
+flmq
F-t{Etdr tnrfu.ug*'qrqlqoqqqM *T 
qd+fi 
qq*?-fr 
d *r*' r
Name the two intermediate hosts which the human liver fluke depends on to complete
its life cycle so as to facilitate parasitization of its primary host. :
sq 
qrql+ 
slftrq,reTf *' rsq sr 
qrrT 
ftfuq 
q} 
ffi |ffifu DNA sl saqr s.{-+ + frq dq
Ei{qif+sqilsqTmEt-trt 
I
Mention the type of host cells suitable for the gene guns to introduce an alien DNA.
tS 
frtai 
qi 
ron 61 ftlfue,re+ *'qrq frkq vi 
q4;1 ii 
rree 
yf{rqTr 
rqrq E-{+ + fuq
'siffiq €iqiftdt' 
*'sq 
ii 
$d mr& t r
Name any two types of cells which act as 'Cellular barriers' to provide Innate Immunity
in humans.
AA
iirrii{HEr[ oNa e-gsqf,rHT *{rt*,sr+meiart, 
qoeq 
I
Mention how does DNA polymorphism arise in a population.
d€ +q $r 
q'q 
frkqftilt'6rn€ sT sfidEr,, ;nar qrar 
* r
write the name of the organism that is referred to as the 'Terror of Bengal'.
ETUiS:- B
SECTION 
- 
B (2x10 
=20\
9. 
qr{dqt+ 
wrrr 
q;uif 
t 
qflTrqq' 
Hqr 
ttrSr 
Cqrd-+cT Wt 
da'q}O FH-k{ srdk{r 
qErql 
+ 
q+
*e t, sq+qrq ftfuq I 
q=T{ 
t 
qwr{{ 
a+ 
tpr*, 
{Ersn{q l 2
Name the organic materials the exine and intine of an angiosperm pollen grains are
made up of . Explain the role of exine.
10. (i) Es 
ffir*., 
EET ;rH 
frfuq fuci gflq fqqrum t*. o{rsifrm qrc +r qtffis@ 
+
{iqiffi t r* riqr 
qfrq 
I
(ii) T6 trs silrrr 
q{ 
E€ M w 
qilqr 
ss+ fqw 
it 
srarEq r 
2
(i) 
Name the scientist who suggested that the genetic code should be made of a
combination of three nucleotides.
(ii) Explain the basis on which he arrived at this conclusion.
tP.T.O.
11. 
qrqi 
{ *q r sra ABo {mT 
q{6t 
o,r f+s vm, r fuiflr €ldr t ? frreT {ffi sifrr#teit Bt {r+{r
q{EftT 
$r 
rFrr 
mnq dnr t, ftafuq r
2
OTqET
tmfufuil ffi t 
qr+ qd qrFft 
6p-ppfiul ffiefu + 
q6,ii 
*'=nq frfiqq r r*oqr 
qro-
q.rsqrflq 
${fuq I
(i) 
rTrqT 
XX 
iST;1qXO 
*'qrq
(ii) 
qrqr 
zw sT T{ zz *'qrq
How does the gene 'I' control ABO blood groups in humans ? Write the effect the gene
has on the structure of red blood cells.
OR
Write the types of sex-determination mechanisms the following crosses show. Give an
example of each type.
(0 Female XX with Male XO
(ii) Female ZW with MaLeZZ
t2. 
qe{ 
+ 
tt i 
qhn 
+ dq {fitur 
gtrqT rrqT 
fu{i| 
qh} 
+i *qrt }'q{ffi ffid aerur t I {is-{ur
+qfirunq { 
qrqr trqr 
l* s+f 
q{*tq 
mqu 500/ t} t t
(i) 
\iq,' 
q+e q,i 
et rcrqer t {m.{ur sT t6qrq Hqr{g I
(i0 tqtrqt{51ur*'rsq$t;T1rtfrfu t 
2
Acrosswascarriedoutbetweentwopeap1antsshowingthecontrastingtraitsofheight
ofthe plant. The result ofthe cross show edil}Voofparental characters. 
\
(i) Work out the cross with the help of a Punnett square. 
t
(ii) Name the type of the cross carried out.
13. 
Enq{rT 
A{q[o0 
{fiflqiT ffi 
qibd 
fuTq + oTrqt H{sr 
sTrqqhi ++ 
qrq 
t$q 
qr 
vqt t r
qqwqq 
1 
2
How can healthy potato plants be obtained from a desired potato variety which is viral
infected ? Explain.
14. DNA 
q{ 
qt 
'ftqfi-qrt flqt' H r{fi t r rt 
qe ;m+ 
*if f<qr 
T qr 
t 2
How are 'sticky ends' formed on a DNA strand.? Why are they so called ?
15. 
qrdqrcilft 
t+q€{T6{uD 
H *,6Pr t r 
gs*-r{aiq it r+rtflq 
{HE + +rT 
q6m 
fti *, frfuq t 2
What is Bio piracy ? State the initiative taken by the Indian Parliament towards it.
16. 
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Construct afiage pyramid which reflects a stable growth status of human population.
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Apart from being part of the food chain, predators play other important roles. Mention
any two such roles supported by examples.
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Write the role of 'Ori' and 'restriction' site.in a cloning vector pBR322.
Page 5


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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.
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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.
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Matcimum Marks : 70
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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 mnrks each and Section 
- 
D is of 3 questions
offive marks each.
(iii) There is no overall choice. However, an internal choice has been provided in one
question of 2 marks, one question of 3 marlcs and all the questions of 5 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 labetled.
Epit- A
SECTION. A
1. F{fiH 
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State the cause of Accelerated Eutrophication.
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Identify 'a' and 'b' in the figure given below representing proportionate number of
major vertebrate taxa.
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3.
4.
5.
7.
8.
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Give an example of an organism that enters 'diapause' and why.
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Name the two intermediate hosts which the human liver fluke depends on to complete
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Mention the type of host cells suitable for the gene guns to introduce an alien DNA.
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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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Mention how does DNA polymorphism arise in a population.
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write the name of the organism that is referred to as the 'Terror of Bengal'.
ETUiS:- B
SECTION 
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B (2x10 
=20\
9. 
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Name the organic materials the exine and intine of an angiosperm pollen grains are
made up of . Explain the role of exine.
10. (i) Es 
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(i) 
Name the scientist who suggested that the genetic code should be made of a
combination of three nucleotides.
(ii) Explain the basis on which he arrived at this conclusion.
tP.T.O.
11. 
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How does the gene 'I' control ABO blood groups in humans ? Write the effect the gene
has on the structure of red blood cells.
OR
Write the types of sex-determination mechanisms the following crosses show. Give an
example of each type.
(0 Female XX with Male XO
(ii) Female ZW with MaLeZZ
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Acrosswascarriedoutbetweentwopeap1antsshowingthecontrastingtraitsofheight
ofthe plant. The result ofthe cross show edil}Voofparental characters. 
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(i) Work out the cross with the help of a Punnett square. 
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(ii) Name the type of the cross carried out.
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How can healthy potato plants be obtained from a desired potato variety which is viral
infected ? Explain.
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How are 'sticky ends' formed on a DNA strand.? Why are they so called ?
15. 
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What is Bio piracy ? State the initiative taken by the Indian Parliament towards it.
16. 
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Construct afiage pyramid which reflects a stable growth status of human population.
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Apart from being part of the food chain, predators play other important roles. Mention
any two such roles supported by examples.
18. dfrrT itm pBR3p2 t "ori" 
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Write the role of 'Ori' and 'restriction' site.in a cloning vector pBR322.
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A colourblind child is born to a normal couple. Work out a cross to show how it is
possible. 
Mention the sex of this child.
OR
Mendel published 
his work on inheritance of characters in 1865, but it remained
unrecognized 
till 1900. Give three reasons for the delay in accepting his work.
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A cross between a normal couple resulted in a son who was haemophilic and a normal
daughter. In course of time, when the daughter was married to a normal man, to their
surprise, the grandson 
was also haemophilic.
(a) 
Represent 
this cross in the form of a pedigree 
chart. Give the genotypes 
of the
daughter and her husband.
(b) 
Write the conclusion you draw of the inheritance pattern 
of this disease.
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Women are often, blame-d for producing 
female children. Consequently, 
they are ill
treated and ostracized. 
How will you address this issue scientifically if you-were 
to
conduct an awareness prograflrme 
to highlight the values involved ?
22. 
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Draw a labelled diagram of the sectional view of a human seminiferous 
tubule. (six
parts to be labelled) 
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(i) 
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? Why does it vary in different types of eco-
systems ?
(ii) 
State the relation between gross and net primary productivity.
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19.
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x 9 
=27)
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tP.T.O.