Rajasthan Board Class 12 Question Paper 2019 Biology

Zm_m§ H $ Roll No.

Tear Here
Sl.No. :

No. of Questions – 30
SS–42–Bio.
No. of Printed Pages – 11

Cƒ _mÜ`{_H$ narjm, 2019
SENIOR SECONDARY EXAMINATION, 2019
Ord {dkmZ

TEAR HERE TO OPEN THE QUESTION PAPER
BIOLOGY

àíZ nÌ H$mo ImobZo Ho$ {bE `hm± \$m‹S>|
g_` : 3¼ KÊQ>o
nyUmªH$ : 56

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 àíZmo§ _| AmÝV[aH$ IÊS> h¡§, CZ g^r Ho$ CÎma EH$ gmW hr {bI|&
`hm± go H$m{Q>E

For questions having more than one part the answers to those parts are to
be written together in continuity.

SS–42–Bio. 1334 [ Turn Over

2
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«$‘m§H$ 14, 27, 28, 29 d 30 ‘| AmÝV[aH$ {dH$ën h¢&
Question Nos. 14, 27, 28, 29 and 30 have internal choices.

SS–42–Bio. 1334

3
IÊS> - A

SECTION - A

1) A{ZfoH$~rOVm H$mo n[a^m{fV H$s{O¶o& [1]

Define Agamospermy.

2) ‘¥Xm ‘| {H$g VÎd H$s H$‘r Ho$ H$maU Zt~y({gQ´>g) ‘| erfm©a§‘r amoJ hmoVm h¢? [1]

Deficiency of which element in the soil causes Dieback disease of Lemon(Citrus).

3) Amo³grH$aU d AnM¶Z A{^{H«$¶mAm| H$mo CËào[aV H$aZodmbo EÝOmB‘ H$m dJ© {b{IE? [1]

Write class of enzyme which catalyses the oxidation and reduction reactions.

4) nmXn hm°‘m}Z H$m Zm‘ {b{IE Omo Amby Ho$ H§$Xm| H$mo g§J«{hV H$aZo ‘| à¶moJ {b¶m OmVm h¡? [1]

Write the name of plant hormone which is used to store potato tubers.

5) Cg VH$ZrH$ H$m Zm‘ {b{I¶o {OgHo$ Ûmam S>r.EZ.E. H$s EH$ à{V{b{n go bmIm| à{V{b{n¶m± A˶ÝV gr[‘V
g‘¶ ‘| àmßV H$s Om gH$Vr h¡& [1]

Write the name of the technique to make lacs of copies of D.N.A. from a single
copy in very limited time.

SS–42–Bio. 1334 [ Turn Over

4
6) ~m¶moJ¡g H$mo n[a^m{fV H$s{O¶o& [1]

Define biogas.

7) ê${Ya Ho$ W³H$m {Z‘m©U H$s à{H«$¶m H$mo àmaå^ H$aZo dmbr ê${Ya H${UH$m¶| H$m¡Zgr h¡? [1]

Which blood corpuscles are necessary for starting the process of blood clotting.

8) Ñ{îQ> nQ>b Ho$ Cg q~Xþ H$m Zm‘ {b{I¶o Ohm± e§Hw$ VWm ebmH$m XmoZm| AZwnpñWV hmoVr h¢? [1]

Name the point on Retina where both rods and cones are absent.

9) g§H$Q>H$mbrZ n[apñW{V¶m| H$m gm‘Zm H$aZo Ho$ {bE ‘mZd eara H$mo V¡¶ma H$aZo dmbo hm‘m}Z H$m Zm‘ {b{IE&[1]

Write the name of hormone which prepares the human body to face adverse
conditions.

10) ‘mZd ‘| àW‘ J«rdm H$eoê$H$ ³¶m H$hbmVr h¡? [1]

In humans what is the first cervical vertebra called.

11) ""amonU'' H$mo g‘PmBE? [1]

Explain "Implantation".

SS–42–Bio. 1334

5
12) aº$ ‘| CnpñWV hr‘mo½bmo{~Z H$m ‘mnZ ³¶m H$hbmVm h¡? [1]
What is the measurement of haemoglobin present in the blood called.

13) E‘. Ama. AmB©. H$m nyam Zm‘ {b{IE& [1]
Write the full form of M.R.I.

IÊS> - ~
SECTION - B

14) i) {dgaU Xm~ ݶyZVm(DPD), namgaU Xm~ (OP) d ñ’$s{V Xm~ (TP) ‘| gå~ÝY {b{IE?
ii) ""EH$ íbW H$mo{eH$m ‘| OP d DPD Vwë¶ hmoVo h¡'' H$maU ~VmB¶o?
[1+1=2]
AWdm
i) Ob {d^d(ψw), namgaU {d^d(ψs) d Xm~ {d^d(ψp) ‘| gå~ÝY {b{IE?
ii) AY©nmaJå¶ {Pëbr go {Kam {db¶Z {OgH$m namgaU {d^d –35 ~ma VWm Xm~ {d^d –5 ~ma h¡ BgHo$
Ob {d^d H$s JUZm H$s{OE?
i) Write the relation between Diffusion Pressure Deficit(DPD), Osmotic
Pressure(OP), and Turgor Pressure(TP).
ii) "OP and DPD are equivalent in a flaccid cell". Give reason.
OR
i) Write the relation between Water Potential(ψw), Osmotic Potential(ψs) and
Pressure Potential(ψp).
ii) Calculate water potential of solution which is enclosed in a semi permeable
membrane whose Osmotic Potential is –35 bar and Pressure Potential is –5
bar.

SS–42–Bio. 1334 [ Turn Over

6
15) i) ‘¥Xm ‘| CnpñWV H«$m§{VH$ VËdm| Ho$ Zm‘ ~VmB¶o&

ii) {H$Z VÎdm| H$s ݶyZVm Ho$ bjU gd©àW‘ AJ«ñW H${bH$mAm| ‘| àH$Q> hmoVo h¡&
[1+1=2]

i) Name the critical elements present in soil.

ii) Deficiency symptoms of which elements appear first in apical buds.

16) ""boåS>m OrdmUw^moOr H$m ‘hÎd dmhH$ Ho$ ê$n ‘| M13 go Á¶mXm hmoVm h¡''& Xmo H$maU ~VmVo hþE Bg H$WZ H$s
nw{îQ> H$s{OE& [1+1=2]

"λ Bacteriophage is more important vector in comparison to M13". Justify this
statement by giving two reasons.

17) EJ«mo~¡³Q>r[a¶‘ {ZX}{eV OrZ ñWmZmÝVaU H$mo g‘PmB¶o? [2]

Explain Agrobacterium mediated gene transfer.

18) ^mJ A ‘| nmXn H$m Zm‘ VWm ^mJ B ‘| BZgo gå~pÝYV Cn¶moJr nmXn ^mJ h¡& {ZåZ H$mo gw‘o{bV H$s{OE -
[½×4=2]

^mJ A ^mJ B

A. ‘§yJ’$br i) ewîH$ nwîn H${bH$mE±

B. Zm[a¶b ii) gwImE JE àH§$X

C. bm¢J iii) ^«yUnmof

D. hëXr iv) ~rO

SS–42–Bio. 1334

7
Part A contains the plant name and Part B contains useful plant part related to
them. Match the following.

Part A Part B

A. Groundnut i) dry flower buds

B. Coconut ii) dried Rhizomes

C. Clove iii) Endosperm

D. Turmeric iv) Seed

19) Zrbh[aV e¡dmb ¶m gm¶Zmo~¡³Q>r[a¶m {H$g àH$ma O¡dCd©aH$ Ho$ ê$n ‘| H$m‘ H$aVo h¡? g‘PmB¶o& [2]

How Bluegreen algae or Cyanobacteria works as biofertilizer? Explain.

20) ídgZ g§~§Yr Xmo amoJm| H$mo g‘PmB¶o& [1+1=2]

Explain two respiratory disorders.

21) hm‘m}Z H$m Zm‘ {b{IE Omo H$mon©g ë¶y{Q>¶‘ Ho$ n[adY©Z H$mo ào[aV H$aVm h¡? H$mon©g ë¶y{Q>¶‘ Ho$ j{VJ«ñV hmoZo
na CËnÝZ à^md H$mo g‘PmB¶o& [1+1=2]

Write the name of hormone which induces the development of corpus luteum.
Explain the effect produced due to the damage of corpus luteum.

22) ‘mZdewH«$mUw H$s g§aMZm H$m dU©Z H$s{OE& [2]

Describe the structure of human sperm.

SS–42–Bio. 1334 [ Turn Over

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23) {ZåZ ‘| go à˶oH$ ‘| OrZ CËn[adV©Z Ho$ àH$ma H$mo g‘PmB¶o& [1+1=2]

i) ATGCATGC → ACGCATGC

ii) ATGCATGC → ATGAATGC

Explain the type of gene mutation in each of the following

i) ATGCATGC → ACGCATGC

ii) ATGCATGC → ATGAATGC

24) A‘r~rno{Me amoJ Ho$ amoJH$maH$ H$m Zm‘ {b{IE& Bg amoJ Ho$ Xmo bjU d ~Mmd Ho$ Xmo Cnm¶ ~VmBE&
[1+½+½=2]

Name the pathogen of Amoebic dysentery. Mention its two symptoms and two
preventive measures.

IÊS> - g
SECTION - C

25) àVrn ~rOmÊS> H$s g§aMZm H$m g{MÌ dU©Z H$s{OE? [2+1=3]
Describe the structure of Anatropous ovule with diagram.

26) {Ûg§H$a g§H$aU H$mo n[a^m{fV H$s{O¶o& ‘oÊS>b Ho$ {Ûg§H$a g§H$aU à¶moJ H$mo M¡H$a ~moS>© Ûmam g‘PmB¶o&
[1+1+1=3]
Define dihybrid cross. Explain Mendel's dihybrid cross experiment by checker
board.

SS–42–Bio. 1334

9
27) EÝOmB‘ {H«$¶m H$mo g{H«$¶U D$Om© ‘| H$‘r Ho$ AmYma na g‘PmB¶o& g{H«$¶U D$Om© H$mo Xem©Zo dmbm Zm‘m§{H$V
{MÌ ~ZmBE& [2+1=3]
AWdm
nmXnm| ‘| Ob‘mJ© Ho$ EnmoßbmñQ> nW H$mo g‘PmB¶o& nmXn H$mo{eH$mAm| ‘| Ob g§MbZ Ho$ à‘wI ‘mJm} H$m {MÌ
~ZmBE&
Explain the mode of enzyme action on the basis of lowering of Activation energy.
Draw a labelled diagram to show activation energy.
OR
Explain Apoplast pathway of water in plants. Draw a diagram to show major paths
of water flow in plant cells.

IÊS> - X
SECTION - D

28) i) àH$me ’$moñ’$mo[abrH$aU {H$go H$hVo h¡?

ii) MH«$s¶ àH$me ’$moñ’$mo[abrH$aU A{^{H«$¶m H$mo g‘PmB¶o&

iii) MH«$s¶ àH$me ’$moñ’$mo[abrH$aU A{^{H«$¶m H$mo Xem©Zo dmbm AmaoI {MÌ ~ZmB¶o&

[1+2+1=4]

AWdm

i) gOrdm| ‘| ½bmBH$mo{b{gg H$m {H«$¶mñWb {b{I¶o&

ii) ½bmBH$mo{b{gg ‘| ½byH$moO Ho$ ’$moñ’$mo[a{bH$aU Ho$ {d{^ÝZ nXm| H$mo g‘PmB¶o&

iii) ½byH$moO Ho$ ’$moñ’$mo[a{bH$aU VH$ hmoZo dmbr O¡d amgm¶{ZH$ A{^{H«$¶mAm| H$m AmaoI {MÌ ~ZmB¶o&

SS–42–Bio. 1334 [ Turn Over

10
i) What is photophosphorylation.

ii) Explain cyclic photophosphorylation reaction.

iii) Draw a line diagram to show the reactions of cyclic photophosphorylation.

OR

i) Write the site of glycolysis in living.

ii) Explain the various steps of phosphorylation of glucose in glycolysis.

iii) Draw a line diagram of biochemical reactions upto phosphorylation of glucose.

29) ‘Zwî¶ Ho$ nmMZV§Ì H$m Zm‘m§{H$V {MÌ ~ZmBE&

Am‘me¶ ‘| nmMZ H$s {H«$¶m{d{Y g‘PmBE&

[1+3=4]

AWdm

‘mZd Ho$ CËgO©Z V§Ì H$m Zm‘m§{H$V {MÌ ~ZmBE&

‘mZd ‘| ‘yÌ {Z‘m©U H$s nam{Zñ¶ÝXZ {H«$¶m H$mo g‘PmBE&

Draw a labelled diagram of human digestive system.

Explain the mechanism of digestion in stomach.

OR

Draw a labelled diagram of human excretory system.

Explain the mechanism of ultrafiltration in Urine formation.

SS–42–Bio. 1334

11
30) i) ‘mZd Ho$ ‘pñVîH$ H$m Zm‘m§{H$V {MÌ ~ZmBE&
ii) à‘pñVîH$ H$m dU©Z H$s{OE&
iii) à‘pñVîH$ Ho$ Xmo H$m¶© {b{I¶o&
[1+2+1=4]
AWdm
i) Za OZZ V§Ì H$m Zm‘m§{H$V {MÌ ~ZmBE&
ii) d¥fU H$s g§aMZm g‘PmBE&
iii) gaQ>mobr H$mo{eH$m Ho$ Xmo H$m¶© {b{I¶o&

i) Draw a labelled diagram of human brain.
ii) Describe Cerebrum.
iii) Write two functions of Cerebrum.
OR
i) Draw a labelled diagram of male reproductive system.
ii) Explain structure of Testis.
iii) Write two functions of Sertoli cells.



SS–42–Bio. 1334

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