class 12th board exam sample paper.

1. [Turn Over
433
narjm{W©`m| Ho$ {bE gm_mÝ` {ZX}e
GENERAL INSTRUCTIONS TO THE EXAMINEES :
1) narjmWu gd©àW_ AnZo àíZ nÌ na Zm_m§H$ A{Zdm`©V {bI| &
Candidate must write first his / her Roll No. on the question
paper compulsorily.
2) g^r àíZ H$aZo A{Zdm`© h¢ &
All the questions are compulsory.
3) àË`oH$ àíZ H$m CÎma Xr JB© CÎma-nwpñVH$m _| hr {bI| &
Write the answer to each question in the given answer-book
only.
4) {OZ àíZm| _| AmÝV[aH$ IÊS> h¢, CZ g^r Ho$ CÎma EH$ gmW hr {bI| &
For questions having more than one part the answers to those
parts are to be written together in continuity.
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Tear
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SS–42–Bio.
SS–42–Bio.
No. of Questions – 30
No. of Printed Pages – 07
Cƒ _mÜ`{_H$ narjm, 2016
SENIOR SECONDARY EXAMINATION, 2016
Ord {dkmZ
BIOLOGY
g_` : 3¼ KÊQ>o
nyUmªH$ : 56
Roll No.
Zm_m§H$
Sl.No. :

2. 2
SS–42–Bio. 433
5) àíZ nÌ Ho$ {hÝXr d A§J«oOr ê$nmÝVa _| {H$gr àH$ma H$s Ìw{Q> / AÝVa /
{damoYm^mg hmoZo na {hÝXr ^mfm Ho$ àíZ H$mo ghr _mZ| &
If there is any error / difference / contradiction in Hindi &
English versions of the question paper, the question of Hindi
version should be treated valid.
6) IÊS> àíZ g§»`m A§H$ àË`oH$ àíZ
A 1-13 1
~ 14-24 2
g 25-27 3
X 28-30 4
Section Q. Nos. Marks per
question
A 1-13 1
B 14-24 2
C 25-27 3
D 28-30 4
7) àíZ H«$_m§H$ 24, 27, 28, 29 d 30 _| AmÝV[aH$ {dH$ën h¢ &
Question Nos. 24, 27, 28, 29 and 30 have internal choices.
IÊS> - A
SECTION - A
1) {dn§wgZ {H$go H$hVo h¡?
What is emasculation? [1]

3. 3
SS–42–Bio. 433
2) gJ^©Vm Ho$ CÎmamY© H$s Ad{Y ‘| AÊS>me¶ Ûmam óm{dV hma‘moZ H$m Zm‘ ~VmB¶o&
Write down the name of hormone secreted by ovary in the later phase of
pregnancy. [1]
3) nmÌo {ZfoMZ H$s Cn¶mo{JVm ~VmB¶o&
Mention the application of invitrofertilization. [1]
4) J^© {ZamoYH$ H$s {H$gr EH$ àmH¥${VH$ {d{Y H$m Zm‘ {b{I¶o&
Write down the name of any one natural method of contraceptive. [1]
5) hmo‘mo go{n¶Ýg H$m {dH$mg {H$g ‘hmÛrn ‘| hþAm?
On which continent Homosapiens arose? [1]
6) Q>mB’$mBS> CËnÞ H$aZo dmbo amoJOZH$ H$m Zm‘ ~VmB¶o&
Write down the name of typhoid causing pathogen. [1]
7) Amo{n‘mBS>g² S>´>J eara H$mo {H$g àH$ma à^m{dV H$aVo h¡§?
How does opioids effect the body? [1]
8) Zrb H«$m§{V ³¶m h¡?
What is Blue - Revolution? [1]
9) XÿY H$mo Xhr Ho$ ê$n ‘| ~XbZo dmbo OrdmUw H$s Xmo bm^Xm¶H$ ^y{‘H$m ~VmB¶o&
Write down the two beneficial roles of bacteria converting milk in to curd. [1]
10) à{VO¡{dH$ (E|Q>r~m¶mo{Q>H$) H$mo n[a^m{fV H$s{O¶o&
Define Antibiotics. [1]
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4. 4
SS–42–Bio. 433
11) OrZ {M{H$Ëgm H$s n[a^mfm Xr{O¶o&
Define gene therapy. [1]
12) ~rQ>r (Bt) Ord{df {H$g OrdmUw Ûmam {Z{‘©V hmoVm h¡?
Which bacteria produces Bt toxin? [1]
13) g‘pîQ> {H$go H$hVo h§¡?
Define population. [1]
IÊS> - ~
SECTION - B
14) ’§$OmB© VWm nmXnm| ‘| {ÛqbJr Ed§ EH$qbJr pñW{V H$mo {H$g àH$ma Cëbo{IV {H$¶m OmVm h¡?
How bisexual and unisexual conditions in fungi and plants are denoted?[1+1=2]
15) ewH«$ OZZ {H«$¶m H$mo {dñVma go g‘PmB¶o&
Explain the process of spermatogenesis in detail. [2]
16) ghà^m{dVm {H$go H$hVo h¡? ‘mZd ‘o§ ghà^m{dVm H$mo CXmhaU XoH$a g‘PmB¶o&
What is co-dominance? With the help of example explain co-dominance in
human - being. [1+1=2]
17) AmZwd§{eH$s Hy$Q> H$s Mma {deofVmE§ ~VmB¶o&
Write down the four salient features of genetic code. [4×½=2]
18) VwbZmË‘H$ eara {dkmZ (emar[aH$s) ¶m AmH$m[aH$s Ho$ AmYma na O¡d {dH$mg H$s nwpîQ> H$s{O¶o&
Prove the organic evolution on the basis of comparative anatomy and
morphology. [1+1=2]

5. 5
SS–42–Bio. 433
19) ghO à{Vajm {H$go H$hVo h§¡? ghO à{Vajm ‘| {H$VZo àH$ma Ho$ amoY hmoVo h§¡? Zm‘ {b{I¶o&
What is innate immunity? How many types of barriers are present in innate
immunity write down their names. [1+1=2]
20) nmXn àOZZ Ho$ CÔoí¶ ~VmB¶o& {H$gr ^r ’$gb H$s ZB© AmZwd§{eH$s Zñb Ho$ àOZZ Ho$ MaU ~VmB¶o&
Write down the objectives of plant breeding. Mention the main steps in breeding
any new genetic crop. [1+1=2]
21) O¡d Cd©aH$ H$s Cn¶mo{JVm ~VmB¶o& O¡d Cd©aH$ Ho$ ê$n ‘| gmBZmo~¡³Q>r[a¶m H$s ^y{‘H$m ~VmB¶o&
Write down the application of biofertilizers. Explain the role of cyanobacteria as
a biofertilizer. [1+1=2]
22) AmZwd§{eH$V: ê$nmÝV[aV Ord {H$go H$hVo h¡§? Or E‘ nm¡Ym| H$m Cn¶moJ h‘mao {bE {H$g àH$ma bm^àX
h¡?
Define Genetically Modified Organism. How GM Plants are useful for us?[1+1=2]
23) O¡d{d{dYVm {H$go H$hVo h¡? O¡d {d{dYVm H$s j{V Ho$ H$maUm| H$m dU©Z H$s{O¶o& ({H$Ýhr VrZ)
What is bio-diversity? Mention the causes of loss of biodiversity (Any three)
[½+1½=2]
24) dm¶w àXÿfU {H$go H$hVo h¡§? dmhZm| Ûmam àXÿfU H$mo {Z¶§{ÌV H$aZo Ho$ {bE {H$E JE à¶mgm| H$mo ~VmB¶o&
AWdm
àXÿfU {H$go H$hVo h¡? ßbmpñQ>H$ An{eîQ> Ho$ CnMma gå~§Yr Aܶ¶Z Ed§ à¶mgm§o H$m dU©Z H$s{O¶o&
What is air pollution? Describe the efforts made for controlling vehicular air
pollutions. [½+1½=2]
OR
What is pollution? Describe the study and efforts made for the remedy of plastic
waste. [½+1½=2]
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6. 6
SS–42–Bio. 433
IÊS> - g
SECTION - C
25) nwînr¶ nmXnm| ‘| {ZfoMZ níM H$s KQ>ZmAm| Ho$ Zm‘ ~VmB¶o& ^«yU n[adY©Z H$s {H«$¶m g‘PmB¶o&
Write down the names of post fertilization events in flowering plants. Describe
the process of embryo development. [1+2=3]
26) ‘oÊS>b Ho$ {Û g§H$a à¶moJ H$m dU©Z H$s{O¶o& Bg à¶moJ go à{Vnm{XV {Z¶‘ H$s ì¶m»¶m H$s{O¶o&
Describe the dihybrid cross experiment performed by Mendal. Explain the law
postulated by this experiment. [2+1=3]
27) n¶m©daUr¶ AOrdr¶ H$maH$m| Ho$ à{V gOrdm§o ‘| nm¶o OmZo dmbr AZw{H«$¶mE§ ~VmB¶o& (H$moB© ^r VrZ)
AWdm
n¶m©daUr¶ H$maH$m| H$s Ma‘ n[apñW{V¶m§o H$m gm‘Zm H$aZo Ho$ {b¶o Ordm| ‘| nm¶o OmZo dmbo AZwHw$bZm|
H$mo VrZ CXmhaUm| Ûmam g‘PmB¶o&
Describe the responses found in organisms against the environmental abiotic
factors. (Any three) [3×1=3]
OR
Write down the adaptations found in organism to face the extremes conditions
of environmental factors. (Any three) [3×1=3]
IÊS> - X
SECTION - D
28) ݶyp³bAmogmo‘ {H$go H$hVo h¡? S>r EZ E Hw$ÊS>br H$m n¡{H${O§J g‘PmB¶o& ݶyp³bAmogmo‘ H$m Zm‘m§{H$V
{MÌ ~ZmB¶o&
AWdm
AZwboIZ {H$go H$hVo h¡? OrdmUw ‘§o AZwboIZ à{H«$¶m H$mo Zm‘m§{H$V {MÌ ~ZmH$a g‘PmB¶o&
What is nucleosome? Explain the packaging of DNA helix. Draw the labelled
diagram of nucleosome. [1+2+1=4]

7. 7
SS–42–Bio. 433
OR
What is transcription? Explain the process of transcription in bacteria by labelled
diagram. [1+2+1=4]
29) à{V~§YZ EÊS>moݶyp³bEO H$s nwZ¶m}JO S>r EZ E {Z‘m©U ‘o§ ^y{‘H$m {dñVma go g‘PmB¶o& B. H$mobmB©
³bmoqZJ g§dmhH$ pBR 322 H$m Zm‘m§{H$V {MÌ ~ZmB¶o&
AWdm
O¡d àm¡Úmo{JH$s {H$go H$hVo h¡? nwZ¶m©oJO S>r EZ E àm¡Úmo{JH$s Ho$ àH«$‘ ~VmVo hþE àW‘ Xmo MaUm§o H$mo
g‘PmB¶o& nwZ¶m}JO S>r EZ E VH$ZrH$ H$m àXe©Z AmaoIr {MÌ Ûmam {Zê${nV H$s{O¶o&
Explain in detail the role of restriction endonuclease in formation of recombinant
DNA. Draw a labelled diagram of E.Coli cloning vector pBR 322. [3+1=4]
OR
Define biotechnology. Mentioning all steps and explain only first two steps of
recombinant DNA technology in detail. Give diagrammatic representation of
recombinant DNA technology. [3+1=4]
30) nm[apñW{VH$s {nam{‘S> {H$go H$hVo h¡§? BgH$s JUZm ‘§o {H$Z-{H$Z ~mVmo§ H$m ܶmZ aIZm Mm{h¶o& Kmg
Ho$ ‘¡XmZ H$s nm[apñW{VV§Ì Ed§ D$Om© àdmh Ho$ {nam{‘S> H$m {MÌ ~ZmB¶o&
AWdm
nm[apñW{VH$s AZwH«$‘U {H$go H$hVo h¡? BgHo$ {d{^Þ MaUm| H$mo ~VmB¶o& Obma§^r Ed§ ewîH$Vma§^r
AZwH«$‘U g‘PmVo hþE BZHo$ aoIr¶ AmaoI ~ZmB¶o&
What are ecological pyramids? What precautions should be kept in mind in
calculating its different aspects? Draw the diagrams of pyramids of grassland
ecosystem and energy flow ecosystem. [1+1+1+1=4]
OR
What is ecological succession. Mention its different steps. Explain Hydrach and
Xerarch succession with diagramatic representation. [1+1+1+1=4]
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