— )o0 2-

3-63—

Jo

H

f

Mo • /?

rJIII

4-u-

)Z

-r. 1

Primary endosperm nucleus is |

a) Haploidb) Diploid c) Triploid d) Polyploid

a) 3Pj,Rid b) ^'j,Rm c) Ri^Pin d) iq,Rin

Semi conservative method of DNA replication was proposed by|

a) Meselson & Stahl b) Watson & crick c) Hershey & chose d) Frederick Griffith

DNA 4^ ^(cl4^U| c^ 3T4^R^T ^cT f4^^ ^T^T f^tj "^tr

1x10=10

31, ^,

^fffelT d)c)b)a)

a)2An example of dioceous plant is

a) cucumber b) maize

f^f ^t ^^^^ t|cbfcJJ||^{4t

a) ^f-n

3Insect Pollinated flowers are ia) Lightb) Non sticky c) Brightly colored d) Feathery

d) Date Palm(c) castor beans

1 Emasculation is removal of I•.

a) Corollab) Anthersc) Ovary d) Ovule

iT mTTcTT % ^

ikd)

All Questions are Compulsory. ^^^^ JT?^T 3lPlc|l4 11Candidates are required to give answers in their own words as for as practicable.

General InstructionThis Question paper consists of four group^ A, B, C, & D^

af^ •^ tlAll groups are compulsory. ^^^\ ^^ 3iPlcii4 11

Group- A W^ -31

Select one Correct answer .

Max. Marks - 35PASS MARKS- 11 ViTime :- 90 minutes

Class : XII

BILOGY ^^^ ^^slHOPTIONAL

MODEL SET PAPERSECTION A-BOTANV

XII

^rs

3^T

^ 3fk

where as tubers of

2x3=6

9Symbiotic association is exhibited by f

a) Penicillin b) Rhiozbiumc) heterocyst d) yeast

a) ^RlRifel^1b) TT^vifrf^T^^ c) ^^R^-c

10Acid rain are caused due to 1

a) NO2&SO, b) CH4 & CFCc) CO2 & CFC d) CH4 & NH3

a) NO2&SO7 b) CH4 & CFCc) CO2 & CFC d)CH4&NH3

GROUP-B^J^ -W

11Fill in the blanks 7^-"

Thorn of Bougainvillea and tendrils of cucurbita are

sweet potato and the potato areorgans.

(Analogous , Homologous)

cfjT cfffcTT 3fk c^c^Rkl cfJT ^cTR t

d)a)

d) consumera) Decomposer b) Predator c) Soil

a) TT^t ^cftf^TfTb) PCRc) 3lldl^il^ 11195) d) TcffMcT

8 The Abiotic Component of an ecosystem is 1

a) 3:1b) 1:2:1c)9:3:3:1 d)9:7

7 Amplification is multiple copies of the DNA segment is done ley /

a) Southern blotting b) PCR c) Autoradiography d) Fluorescent Microscopy

DNA ^fiT ^cfi ^f 3T^^fi ^^^ sF^TT tiwi^flfLbcf^^H t^TT 11

6 The Phenotypic retio of a dihy brid cross in gander pea is : I

a) 3:1b) 1:2:1c) 9:3:3:1 d) 9:7

d)fsfjcfj c)b)• a)

0

©+

Species B

( C )

+

0Species A

Ch^^illdVT^

^^dlfclcll

c) Commensalism

b) Parasitism

^edimcii

a) Mutualism

Name of interaction

3x3=9

15 Complete the table ^sfcT cfjT

^^ ^^^^n

-iiR^i

chldHl B

a) cjr^

b) Tjf

c) ftp

rt^f3TT^^T

chid HI A

a) 3

b) 4

c) ^

chid HI cf5t

a) Cannabis

b) Erythroxylon coca

c) Poppy plant

Column B

a) Opiods

b) Caninbinoids

c) Cocaine

Column A

12Draw a labeled diagram of a fully developed Female gametophyte of Angiosperm.

t^cp Tjof R|c^Rhc1 HKI^HvdddJ Wf Hl-Hl'fchcl f^T5f spf^ I

13Write four adaptive features of a wind pollinated flower.'^

cug RT WfFT ^ ^ f^^ ^R ^1 ^c-H ^ f^

GROUP -

14Match the following

andare the types of mutation.

18 What is meant by incomplete dominance ? In Snapdragon a plant with red flowers was•-*

crossed with a plant with white flowers. Work out all the possible genotype and phenotypes

of F| and F^ generation.

3^^^^ 5^^lie)ell ^T cRTT TF^Tc^ t? ^M^M c^ ^tef ^ ^lcT ^T 3fR

"h^ ^F^fl cRf ^RTRFR F, and F2 ^Mt ^ ^T^ u^ld^dl^M 3fR l^dVl

ORWhat do you mean by nutrient cycling ? Explain Carbon cycle in detail.

^IH^trl f? cRT^T tRR cRT fcR?fR ^

j) Qjc^Wc^ ^^R c^T T.S

ii) WFRf^T cf>) -J^TcTfr Tf^RT

ORWhat is meant by double fertilization? Write its significance in angiosperms.

16What are the types of RNA ? Write their function.

. RNA cf> ^I^H PERR cRTT t ? ^^^c^^ cRR^ foRsf j

ORWhat is water pollution? Name at least three water pollutants and their harmful

effects.

^et Sfc^^i c|^T t? f^F^f cf^f P5RT PEW ^R ^TR feRsf P^T ^^c^^ cf?Rf ^t feRt I

GROUP -D ^^g -^ A- ?< ^ - 10J)

17Draw a labeled diagram of the following : -S

i) T.S of bilobed anther of an organism

ii) Internal stricture of a pollen again of an angiosperm

Type of sex detennination found in human

a) XY ^T^T b) XX ^T c) XO cTT^T d) ZW

Which of the following is the high milk yielding variety of Cow? I

a) Dorsetb) Holstein c) Pahminad) Nellore

mf cffl" PEmfcT t ^^^ TfcftRlcf^ ^T ^cft t?

b) ^ldR-^d c) ^^i4^f

/

d) GH

d) All

a) ^ll4d b) Hl>!JH c) ^I^^T &

Which disease is sex vally transmitted?

a) AIDS b) Malaria c) Typhoid d) Allcfi^^ TTT ^^T cfRl'cb ^^ ^^lRcl t?

a) AIDSb) Malaria c) TyphoidHormone released from testis/

a) Estrogen b) Progesteronec) Testosterone

f Plcpci^ cTfelT 6I^id

a) ^i^l^id b) Ml^^4d c) cR-c^-cl^H d) GH

fd)

Who Proposed chromosomal theory of inheritance \

a) Darwinb) Morgan c) Sutton & Boveri d) Mendel

3|R|c|l4 11Group-A ^^g -at (j^^to ^ 10j)

All groups are compulsory.

Select one Correct answer .

All Questions are Compulsory. TPft TT^T 3JpMl4 11

Candidates are required to give answers in their own words as for as practicable.

General InstructionThis Question paper consists of four groups uA,B,C,&D^ J^^rT W^ ^ ^TC W^ ^^T 3T, ^, ^f

Max. Marks - 35PASS MARKS- \VA

Time :- 90 minutesClass : XII

BILOGY/ OPTIONAL

MODEL SETSECTION B-ZOOLOGY

2^td la^ if sei • JUT

12What is Pregnancy hormone? Why it is so called? Name two sources of this hormone in a

human female. 2^~

3^RfT ^NHH R^^Tf cfjFcI t? F^f tRTT c^it cf^Frl t? ^1^T ^ F^c^^ e^t ^lcT ^T ^^T

13Name the causative organism of typhoid? Write at least two of its symptoms.

a) ill^^iH ^hlfetcbd b) ^T c) ^?PT fj^\ d)

GROUP-B ^^^ -W

11 What is amniocentesis?

a) ^JpfT^^ ^ b) ^Jc^^T ^fc) ^IMci^-M ^ d)

10 Ovulation is rupture of

a) Graafian follicleb) Testisc) Mammary gland d) uterus

a) FI^b) 3Tt^^c) fclPlil'^ d)

9 Population density decreases due to |

a) Natalityb) Immigrationc) Mortality d) Emigration

a) t^cf^ pfcj^pj cf5T cm^^'i b) ^^TT^ cfToTT ^^I^H c) t^c^ ellcb>dcj^ ^|(c!.c||AJ)[ci<t)

d) ^TRcT $^fon

8 The tenn 'ecology' was coined by }

a) Harveyb) Odumc) Linnaeus d) Haeckel

a) ^R-^^M & ^^V^cnfci^vji b) ^fcfc^^jT c) <W^|.^^i d) cii^^l^i

7 The term humulin is used for |

a) a form of chitin b) digestive enzyme c) a powerful antibiotic d) human insulin

FlcfT t

6 In genetic engineering, which of the following enzymes is used to cut DNA? /

a) Restriction endnucleaseb) Helicase c) Pectinase d) Ligase

DNA cf^t F^c^t F> feP^ \dM^fl•• I

cf5T

Draw labeled (6 labeling ) figure of human.

15What are ecological pyramids? Represent Schematically the pyramid of energy in a

forest ecosystem. ^

MiRR^rfrfcf^ Rki^^-s cptt t? R ^iRR^rfrra^ e^^ c^ ^jrf cjtt R^iR-^ srt^ i

16Define biogeography? How do Darwivis finches provide the biogeographical

evidence in favour of evolution? ^3

^cr "^j^fTcT c^tt 11 ^siRd ^ ^ra f^^^r ?r^ ^r fbHR<t.i>H c^t ^rft ^cf t?

ORWhat are the steps of gene closing or recombinant DNA technology?

^jft^ <fcilPiji ^n RcM^R^'e dna ^raratcf^jfr c^ RR^ ^r^t feRt |

GROUP-D ^sP^g ^ fe"^ ^ ^ ^9

17What is gametogevesis? Name the procers occurring in human males. Explain in detail with

figure. ^

^^viHH ^ cfm ^T^?T^ t? ^R ^ ^^raT vJTT^ c[Tefl ^lffbill c^

fcR^TR ^f >UH$lR I

ORHow a labeled figure of DNA Proposed by Watson and crick

3ft^ f^c^ g^^T 3^^ITT Hl^ei c^ ril^i^bd f^T3f

OR

51

Label 1. 2, and 3 in the given figure

1Template strand

c 3

1, 2 A^T 3 ^>t rilriifcbd^\

GROUP -C^sP^ -RT (3^* 3 ^

14

ORDescribe the mechanism of inheritance of the ABO system of blood groups.

Highlighting the principle of genetics involved in it.

ABO ^rf^TC cpf cf5t 3t^cii

18 What is artificial insemination? Write its advantages and disadvantages.