NIOS Class 12 Question Paper Apr 2019 - Biology

This Question Paper consists of 30 questions and 12 printed pages.
Bg àíZ-nÌ _| 30 àíZ VWm 12 ‘w{ ÐV n¥ð> h¢ &
Sl. No.

Roll No.
AZw H « $ _m§ H $
Code No.
H$mo S > Z§ . 58/OSS/1
BIOLOGY (Theory) Set / go Q > A
Ord{dkmZ ({gÕm§V)
(314)
Day and Date of Examination
(narjm H$m {XZ d {XZm§ H $)
Signature of Invigilators 1.
({ZarjH$m| Ho $ hñVmja)
2.
General Instructions :
1. Candidate must write his/her Roll Number on the first page of the Question Paper.
2. Please check the Question Paper to verify that the total pages and total number of questions contained in
the Question Paper are the same as those printed on the top of the first page. Also check to see that the
questions are in sequential order.
3. Making any identification mark in the Answer-Book or writing Roll Number anywhere other than the
specified places will lead to disqualification of the candidate.
4. Write your Question Paper Code No. 58 / OSS / 1, Set - A on the Answer-Book.
5. (a) The Question Paper is in English/Hindi medium only. However, if you wish, you can answer in any
one of the languages listed below :
English, Hindi, Urdu, Punjabi, Bengali, Tamil, Malayalam, Kannada, Telugu, Marathi, Oriya, Gujarati, Konkani,
Manipuri, Assamese, Nepali, Kashmiri, Sanskrit and Sindhi.
You are required to indicate the language you have chosen to answer in the box provided in the Answer-Book.
(b) If you choose to write the answer in the language other than Hindi and English, the responsibility
for any errors/mistakes in understanding the question will be yours only.

gm_mÝ` AZw Xo e :
1. narjmWu àíZ-nÌ Ho$ nhbo n¥ð> na AnZm AZwH«$‘m§H$ Adí¶ {bI|&
2. H¥$n¶m àíZ-nÌ H$mo Om±M b| {H$ àíZ-nÌ Ho$ Hw$b n¥ð>m| VWm àíZm| H$s CVZr hr g§»¶m h¡ {OVZr àW‘ n¥ð> Ho$ g~go D$na N>nr h¡& Bg
~mV H$s Om±M ^r H$a b| {H$ àíZ H«${‘H$ ê$n ‘| h¢&
3. CÎma-nwpñVH$m ‘| nhMmZ-{M• ~ZmZo AWdm {Z{X©ï> ñWmZm| Ho$ A{V[aº$ H$ht ^r AZwH«$‘m§H$ {bIZo na narjmWu H$mo A¶mo½¶ R>ham¶m Om¶oJm&
4. AnZr CÎma-nwpñVH$m na àíZ-nÌ H$s H$moS> g§»¶m 58 / OSS / 1, goQ> - A {bI|&
5. (H$) àíZ-nÌ Ho$db qhXr/A§J«oOr ‘mܶ‘ ‘| h¡& {’$a ^r, ¶{X Amn Mmh| Vmo ZrMo Xr JB© {H$gr EH$ ^mfm ‘| CÎma Xo gH$Vo h¢ :
A§J«oOr, qhXr, CX©ÿ, n§Om~r, ~§Jbm, V{‘b, ‘b¶mb‘, H$ÝZ‹S>, VobwJw, ‘amR>r, C{‹S>¶m, JwOamVr, H$m|H$Ur, ‘{Unwar, Ag{‘¶m,
Zonmbr, H$í‘rar, g§ñH¥$V Am¡a qgYr&
H¥$n¶m CÎma-nwpñVH$m ‘| {XE JE ~m°³g ‘| {bI| {H$ Amn {H$g ^mfm ‘| CÎma {bI aho h¢&
(I) ¶{X Amn qhXr Ed§ A§J«oOr Ho$ A{V[a³V {H$gr Aݶ ^mfm ‘| CÎma {bIVo h¢ Vmo àíZ H$mo g‘PZo ‘| hmoZo dmbr Ìw{Q>¶m|/Jb{V¶m| H$s
{Oå‘oXmar Ho$db AmnH$s hmoJr&

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BIOLOGY (Theory)
Ord{dkmZ ({gÕm§V)
(314)
Time : 3 Hours] [Maximum Marks : 80

g_` : 3 K§Q>o] [nyUmªH$ : 80

Note : i) This Question Paper consists of 30 questions.
ii) All the questions are compulsory.
iii) Marks for each question have been indicated against it.
iv) Each question from Q. Nos. 1 to 8 has four alternatives - (A), (B), (C) and (D), out
of which one is the most appropriate. Choose the correct answer among the four
alternatives and write it in your answer-book against the number of the
question. No separate time is allotted for attempting multiple choice questions.
{ZX}e : i) Bg àíZ-nÌ ‘| 30 àíZ h¢ &
ii) g^r àíZ A{Zdm¶© h¢ &
iii) à˶oH$ àíZ Ho$ A§H$ CgHo$ gm‘Zo Xem©¶o J¶o h¢ &
iv) dñVw{ZîR> àíZ H«$‘m§H$ 1 go 8 VH$, à˶oH$$ àíZ Ho$ Mma d¡H$pënH$ CÎma (A), (B), (C) Am¡a (D) {X¶o J¶o h¢ {OZ‘| go EH$ ghr
¶m gdm©{YH$ C{MV h¡ & Mma d¡H$pënH$ CÎmam| ‘| go ghr CÎma Mw{Z¶o VWm Cgo AnZr CÎma-nwpñVH$m ‘| àíZ H«$‘m§H$ Ho$ gm‘Zo {b{I¶o&
dñVw{ZîR> àíZm| Ho$ {b¶o AbJ go g‘¶ Zht {X¶m Om¶oJm &

1. Which of the following bacteria causes cholera? [1]

A) Vibrio cholerae

B) Rhizobium

C) Azotobacter

D) Lactobacillus

{ZåZ{b{IV ‘| go {H$g OrdmUw Ho$ H$maU h¡Om Zm‘H$ amoJ hmoVm h¡?

A) {d{~Ǧmo H$moboar

B) amBµOmo{~¶‘

C) EoµOmo~¡³Q>a

D) b¡³Q>mo~¡³Q>a

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2. One of the macronutrient given below plays a key role in food production and
normal growth of the plant. [1]
A) Boron
B) Copper
C) Carbon
D) Uranium
ZrMo {XE JE ~¥hV² nmofH$m| ‘| go H$m¡Z-gm nmofH$ nm¡Yo Ho$ ImÚ CËnmXZ Am¡a gm‘mݶ d¥{Õ ‘| à‘wI ^y{‘H$m
{Z^mVm h¡?
A) ~moamoZ
B) Vm±~m
C) H$m~©Z
D) ¶ya{o Z¶‘

3. Name the complex tissue which function as a unit to conduct water and minerals
upward from root to leaves. [1]
A) Phloem
B) Parenchyma
C) Xylum
D) Sclerenchyma
Cg O{Q>b D$VH$ H$m Zm‘ ~VmBE Omo O‹S> go boH$a D$na VH$ Ob Ed§ I{ZOm| H$mo nhþ±MmZo H$m EH$ BH$mB© Ho$ ê$n
‘| H$m¶© H$aVm h¡&
A) âbmoB‘
B) ‘¥XÿVH$
C) µOmBb‘
D) Ñ‹T>D$VH$

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4. Identify the fluid found in the Cavities of the brain. [1]

A) Cerebrospinal fluid

B) Serum

C) Grey matter

D) Plasma

‘pñVîH$ H$s JwhmAm| ‘| nmE OmZo dmbo Vab Ðì¶ H$mo nhMm{ZE&

A) à‘pñVîH$ ‘oê$ Ðd

B) gra‘

C) Yyga Ðì¶

D) àÐì¶

5. Choose the plant hormone which induces "Parthenocarpy". [1]

A) Auxin

B) Gibberelins

C) Ethylene

D) Lactic acid

Cg nmXn hm‘m}Z H$mo Mw{ZE Omo A{ZgoH$’$bZ Ho$ ào[aV H$aVm h¡&

A) Am°p³gZ

B) {O~«oqbg

C) Eo{W{bZ

D) b¡p³Q>H$ Aåb

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6. Identify the following figure : [1]

A) Sac B) Leaf
C) Embryo D) Seed Coat
¶hm± {XE JE {MÌ H$mo nhMm{ZE :

A) H$moe B) nÎmr
C) ^y«U D) ~rO

7. With reference to organisation of life, Rana tigrina comes into which category? [1]
A) Community B) Species
C) Organism D) Biome
Ord - g§KQ>Zm H$s Ñ{ï> go amZm {Q>{J«Zm {H$g loUr Ho$ A§VJ©V AmVm h¡?
A) g‘wXm¶ B) ñnrerµO
C) Ord D) ~m¶mo‘

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8. Which of the following enzyme is called "Joining Enzyme"? [1]
A) Plasmids
B) DNA ligase
C) Protease
D) Amylase
{ZåZ{b{IV E§µOmB‘m| ‘| go {H$g E§µOmB‘ H$mo ""¶m|Or E§µOmB‘'' H$hVo h¢?
A) ßbmpñ‘S>
B) DNA bmBJoµO
C) àmo{Q>EoµO
D) E‘mB©boµO

9. Define the term inflorescence. What are the major types of inflorescence in flowering
plants. [2]

""nwînH«$‘'' erf©H$ H$s n[a^mfm {b{IE & nwînr nm¡Ym| ‘| nwînH«$‘ H$s Xmo à‘wI {H$ñ‘| nm¶r OmVr h¡?

10. Observe the diagrams and answer the following : [2]

a) Are these type of stomata found in monocots or dicots?

b) Mention their main function.
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ZrMo {XE JE AmaoIm| H$mo Xo{IE Am¡a {ZåZ{b{IV àíZm| Ho$ CÎma Xr{OE :

a) Bg n«H$ma Ho$ a§Y« EH$~rOnÌr nm¡Ymo ‘| nmE OmVo h¢ & AWdm {Û~rOnÌr nm¡Ym| ‘|?
b) BZH$m à‘wI H$m¶© ~VmBE &

11. Give an example for each of the following : [2]

a) Aerobic bacteria which fixes nitrogen

b) Anaerobic bacteria which fixes nitrogen
c) Cyanobacteria which fixes nitrogen

d) Photosynthetic non-sulphur bacteria which fixes nitrogen

ZmBQ´>moOZ Ho$ pñWarH$aU ‘| ghm¶H$ {ZåZ{b{IV gOrd gyú‘Ordm| H$m EH$-EH$ CXmhaU Xr{OE :
a) dm¶dr¶ OrdmUw
b) Adm¶dr¶ OrdmUw
c) gm¶ZmoOrdmUw

d) àH$meg§îbr¶ J¡a gëµ’$a OrdmUw

12. Where does spinal cord is located in human beings. Mention its main function. [2]

‘mZdm| ‘| ‘oê$a‚mw H$hm± pñWV hmoVr h¡& ‘oê$a‚mw H$m à‘wI H$m¶© ~VmBE &
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13. Give reasons : [2]

a) Habitat is called an address of the organism.

b) Fins are an adaptations of fish to aquatic life.

H$maU ~VmBE :

a) Ord Ho$ Amdmg Ho$ n¶m©dmg ³¶m| H$hVo h¢?

b) Obr¶ OrdZ Ho$ {bE n§I ‘N>br Ho$ AZwHy$bZ hmoVo h¢ &

14. What is the importance of balanced diet? Reason out the special diet recommendation
to pregnant and lactating women? [2]

g§Vw{bV Amhma H$m ‘hËd ~VmBE & J^m©dñWm Am¡a Xþ½Yg«mdr ‘{hbmAm| Ho$ {bE {d{eï> Amhma XoZm ³¶mo Amdí¶H$
h¡?

15. a) Why are human testes located outside the abdominal cavity?

b) Name the pouch in which they are present.
[2]

a) ‘mZdm| ‘| d¥fU CXar¶ Jwhm Ho$ ~mha ³¶m| pñWV hmoVo h¡?

b) Cg H$moe H$m Zm‘ ~VmBE {OgHo$ ^rVa d¥fU pñWV h¡&

16. How is the phenotypic ratio of F2-generation in dihybrid cross is different from
monohybrid cross? [2]
{Ûg§H$a H«$m°gm| ‘| F2 g§V{V H$m bjUàê$nr AZwnmV EH$g§H$a H«$m°g go ³¶m| {^Þ hmoVm h¡?

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17. Answer the following : [2]
a) Which phase of growth curve shows rapid and maximum growth?
b) What is the term used for inducing early flowering in plants at low temperature?
c) Name the specially designed equipment used to measure the rate of growth of
shoot length of plants.
d) What is the hypothetical plant hormone which is responsible for initiation of
flowering in plants?
{ZpåZ{b{IV Ho$ CÎma Xr{OE :
a) d¥{Õ H$s H$m¡Zgr àmdñWm Ho$ Xm¡amZ Vrd« Am¡a A{YH$V‘ d¥{Õ hmoVr h¡?
b) nm¡Ym| ‘| {ZåZ VmnH«$‘ na OëXr nwînZ H$mo ào[aV H$aZo Ho$ {bE H$m¡Z-gm erf©H$ à¶wº$ {H$¶m OmVm h¡?
c) nm¡Ym| ‘| àamoh H$s b§~mB© ‘| d¥{Õ H$mo ‘mnZo Ho$ {bE {deof ê$n go V¡¶ma {H$¶o J¶o CnH$aU H$m Zm‘ ~VmBE &
d) nm¡Ym| ‘| nwînZ Ama§^Z H$aZo Ho$ {bE n[aH$pënV nmXn hm‘m}Z H$m¡Z-gm h¡?

18. Draw a neat diagram of human lung and label the Larynx and trachea parts : [2]
‘Zwî¶ Ho$ ’o$’$‹S>mo H$m EH$ ñdÀN> AmaoI ~ZmBE VWm Cg‘| {ZåZ{b{IV ^mJ aoIm§{H$V H$s{OE & H§$R> Ed§ ídmgZbr &

19. Write any four advantages of Bio-diesel. [2]
O¡d - S>rµOb Ho$ H$moB© Mma bm^ ~VmBE &

20. Write any two effects of the following :- [2]
a) Excess intake of Iron.
b) Excess intake of Vitamin - D
{ZåZ{b{IV Ho$ H$moB© Xmo à^md ~VmBE :
a) bm¡h H$m A{VaoH$ ‘mÌm ‘| godZ H$aZm &
b) {dQ>m{‘Z - D H$m A{VaoH$ ‘mÌm ‘| godZ H$aZm &
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21. Write short notes on :- [2+2=4]

a) Mode of nutrition in Yeast.

b) Sexual recombination in Bacteria.

{ZåZ{b{IV na g§{já {Q>ßnUr {b{IE :

a) ¶rñQ> H$s nmofU - {d{Y

b) OrdmUw ‘| b¡{JH$ nwZ¶m}OZ

22. Give reasons : [2+2=4]

a) Sino-atrial node is called pacemaker of the heart.

b) Person with blood group 'O' called Universal donor.

H$maU ~VmBE :

a) {eam AqbX (Sino-atrial) J«§{W H$mo öX¶ H$m n¡g‘oH$a ³¶m| H$hVo h¡?

b) 'O' ê${Ya dJ© dmbo ì¶{º$ H$mo gmd©{ÌH$ àXmVm ³¶m| H$hVo h¢?

23. Differentiate between "Monocot stem and Dicot stem". [4]

EH$ ~rOnÌr Am¡a {Û~rOnÌr ñV§^m| ‘| A§Va ~VmBE &

$24.A man with 'A' blood group married a woman with blood group 'B'. Work out a
cross to show possible blood groups that can be expected in their off springs. [4]

H«$‘e A Am¡a B aº$ dJ© dmbo {H$gr nwê$f Am¡a ór go CËnÞ g§V{V Ho$ g§^mdr aº$ dJm] H$mo Xem©Zo dmbm EH$
H«$m°g ~ZmBE &

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25. a) Which phase of cell-cycle DNA-replication takes place? [1]
b) Describe in brief the process of "Transcription in Prokaryotes". [3]

a) H$mo{eH$m - MH«$ H$s {H$g àmdñWm Ho$ Xm¡amZ DNA-à{VH¥${V¶Z hmoVm h¡?
b) àmHo$pÝжm| ‘| hmoZo dmbr AZwboIZ à{H«$¶m Ho$ g§{já {ddaU àñVwV H$s{OE &

26. Draw a schematic diagram of "Carbon Cycle". [4]

H$m~©Z - MH«$ H$m EH$ ¶moOZm~Õ AmaoI ~ZmBE &

27. a) Write any four salient features of Class-Aves with two examples. [4]
b) Define "Alteration of generation", with one example. [2]
a) Xmo CXmhaU XoVo hþE EodrµO dJ© Ho$ H$moB© Mma {d{eï> bjU ~VmBE &
b) EH$ CXmhaU XoVo hþE ""nr‹T>r - EH$m§VaU'' H$s n[a^mfm {b{IE &

28. a) What is the other name for "Adaptive immune response"? [1]
b) State the role of T-cells and B-cells in Adaptive immune response. [2]
c) Biotechnologist refer to "Agrobacterium tumefaciens" as a natural genetic
engineer. Give reasons to support the statement. [3]
a) ""AZwHy$br à{Vajm AZw{H«$¶m'' H$mo {H$g Xÿgao Zm‘ go OmZm OmVm h¡?
b) AZwHy$br à{Vajm AZw{H«$¶m ‘| T-H$mo{eH$mAm| Am¡a B-H$mo{eH$mAm| H$s ^y{‘H$m ~VmBE &
c) O¡d àm¡Úmo{JH$s{~X² "EoJ«mo~¡³Q>r[a¶‘ Qçy‘rµ’¡$qg¶g'' H$mo àH$m{VH$ AmZwd§{eH$ B§Or{Z¶a Ho$ ê$n ‘| ‘mZVo
h¢& Bg H$WZ H$s nw{ï> H$aZo Ho$ {bE H$maU ~VmBE &

29. a) Name the scientist who discovered C3 cycle. [1]
b) Draw a neat schematic diagram of C3 cycle in plants. [3]
c) Justify your answer why C4 plants are most efficient than C3 plants? [2]
a) C3 MH«$ H$s ImoµO H$aZo dmbo d¡km{ZH$ H$m Zm‘ ~VmBE &
b) nm¡Ym| ‘| C3 MH«$ H$m EH$ ñdÀN> ¶moOZm~Õ AmaoI ~ZmBE &
c) C3 nm¡Ym| H$s Anojm C4 nm¡Yo ³¶m| A{YH$ H$maJa hmoVo h¢& AnZo CÎma H$s nw{ï> H$s{OE &

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30. a) What is "Criss - Cross inheritance"? [1]

b) Why is red - green colour blindness more common in males than females?[2]

c) How is colour blindness inherited? Explain with the help of flow chart. [3]

a) {H«$g H«$m°g d§emJ{V ³¶m hmoVr h¢?

b) bmb-har dUmªYVm {ó¶m| H$s VwbZm ‘| nwéfm| ‘| A{YH$ ³¶m| nm¶r OmVr h¡?

c) dUm©YVm H$s d§emJ{V {H$g àH$ma hmoVr h¡? EH$ àdmh MmQ>© H$s ghm¶Vm h¡ ì¶m»¶m H$s{OE &



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