plus two biology model question paper

8/13/2019 Plus two Biology Model Question Paper

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HIGHER SECONDARY MODEL EXAM 2010

BOTANY

HSE II Max. Score : 30

Time : 1 hr

Instructions1. Observe the relationship of the first pair and fill in the blanks.

a) MMC : Microspore mother cellPEN : ___________________ (1/2score)

b) Buds : Hydra

Conidia : ___________________ (1/2score)

X np B Zy ] Z f psS _ w\ nco n vh npt ] mb h ] qc n n pI .

a) F w. F w. k n.: s s at {I mk vt ] m aZ s k ] n. C. F : ___________________

b) apI pf w : s s l {Us I mW nU nb : ___________________

2. Complete the following diagram.

(1 Score)Nn{X ns e h npt ] mb ` mKw] qc n n pI

3.

Observe the graphical representation of organismic response and Name A & B. (1 Score)

Poh nI f ps S {] X nI c W wk qNn n p {Km v\ nc o n v Ab v pwB b v pwA \ pt b mPyamb t ] c pI \ I pI .


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4. In nature, one species can occupy more than one trophic level.Is it possible ? Comment ? (1 Score){] I rX nb n Hc p Poh nh wH n I qSpX t {Sm nI X e f nImWsSmdp-v. C X vk m yamt W m? h ni ZvoI c n pI .

5. Nature promotes cross pollination over self pollination. List out any 3

devices prevents self pollination (11/2Score)

{] I rX nk z] c mKW m ] c ] c mKW s t {] m ml n n p p.k z] c mKW s X Sb p 3 am \ nt Zi n pI .

6. Give Suitable technical terms for the following :

a) Cell which undergoes meiosisb) Male and female sex organs in the same animal

c) Development of fruit without fertilization (11/2Score)

X ms g s I mSp nc n p h b v v A \ pt b mPyamb k mt X nI] Z \ nt Zi n pI .a) Du\ ` wK n\ vh nt [ b amI p t I mi w.b) k v{X o ] pcpj {] X ypX v] mZ\ A hb h Hcp Pohnb n I mWp

A hc)_ oP k e\ w\ SmsX ^efp-mIp {]{Inb.

7. Now a days Bt Brinjal has been much in the news. Being a GM food, is it

advantageous or disadvantageous ? (List 2 points each) (2 Score)

A Sp I me v Bt h gpX \ h m m {] m[ m\ yw t \ Sn.P\ nX I amw h c p nb ` y h k vX p F \ neb n C X ns t \ f pwt I m f pwh neb nc p pI .

8. PCR is meant for making the multiple copies of a gene of interest. Mention the major

steps involved in PCR. Name an organism from which a thermostable DNA

polymerase in isolated.

(2 Score)

X mX v] cyap Po\ pI f psSA t \ I wX \ n] I pI \ nn p X n\ pamamWv ] n.k n.B . t a d {] {I nb b nse {] [ m\ s L F gpX pI . G X v Poh nb n \ n mWv sX t amt _ n U n. F . F .t ] mf nat dk vt hX ncns Sp p X v?

9. Match the following.

Name of Interaction Type of interaction Examples

1. Mutualism2. Competition3. Parasitism4. Commensalism

+ O

+ -

- -

+ +

Cuscutta - Hibiscus

Vanda Mangotree

Lichen

Flemingoes & Fishes

(2 Score)


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t a ] d ncn p ] nI b n B Zys t I mf w \ nco n v i cnb mbcoXnbn c-pw. ] nI b n B Zys t I mf w\ nco n vi cnb mb coX nb nc-pw aqpw tImf{I aoI cn pI .

10. Restriction enzymes and ligases opened the door way for r DNA technology.a) Do you agree with this statement ?

b) Justify (2 Score)

dk v{Sn F s s k apI f pw ent Kk pI f pamW v P\ nX I k mt X nIh nZyb psS h mX mb \ X pd X v. Cu A ` n{] mb t mSv X m tbmPnppt-m?\ ymb oI c n pI .

11. The existence of human beings is under great threat due to uncontrolled emission of

green house gases. Can you suggest any 2 remedial measures to reduce this effect ?(2 Score)

l c nX t Kl h mX I f ps S A \ nb nX amb ] pd aqewa\ pj yc mi n h ` oj W n t \ c nSpI b mW v. C X p I pdb v m\ p 2] c nl mc am \ nt i n pI .

12. Transgenic animals are said to be beneficial to human beings. Justify this statement bylisting out any 2 reasons. (2 Score)

P\ nX I amw h cp nb Poh nI a\ pj y\ v ] eX c n{] t b mP\ s Sp p. C X ns \ \ ymb oI c n p 2 I mc W s f gpX pI .

13. While conducting a field trip, students observed a water body near a large farm. They

were surprised to see that the colour of the water had changed and was having unpleasant

odour. Also green floating plants green in abundance.

a) What could be the reason for this ?

b) Will the BOD be high or low expand BOD ? (2 Score)

] T\ b m{X b v nSb n h nZym nI Hc p ^ man\ Sp p Pemi b wI mW pI b p-mbn. Pens Zphpw \ ndh yX ymk h pw A h c nB c yw P\ n n p. k k y f ps S A anX amb h f b pw{i b n s ] p.

a) C u A h b v vI mc W s agpX pI .

b) Pe ns _ n.H.U n. I qSpX emt W mI pdh mt W m? _ n.H.U n. h n] peoI c n pI .

14. Observe the schematic diagram of the formation of climax community of complete the

sequence and name the process. (3 Score)

apI f n s I mSp nc n p t c J mNn{X w \ nc o n v s s amI vk vIyqWnn D-mp hn[w ]qcnnpI Cu {]{InbbpsSt ] s c gpX pI .


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15. In Angiosperms, the zygote is diploid while the endosperm is triploid. Discuss the eventsleading to the formation of diploid zygote & triploid endosperm. (3 Score)

k ] pj v] nI f n ss k t Kmv U nt mb nU pw F t U mk vt ] w{Snt mb nU pamW v. Ch c q] s Sp X ns h nh n[ L h nh c n pI .

16. One of the aims of plant breeding is to produce high yielding, disease resistant cropplants. Describe the main steps in plant breeding. Name the variety of Bhindi which is

resistant to yellow mosaic virus. (3 Score) m v {_ oU n ns Dt i e y f nsem v A X ypX v] mZ\ t i j nb pwt cmK{] X nt cm[ t i j nb pap hnf I hnI k n ns Sp pI F X mW v. m v{_ oU n ns hnhn[ L hnhc n pI . sb t msamssk vssh dk ns\{]Xntcm[npI sh-bpsS t]scgpXpI.

Prepared by

Gopakumar. S

H.S.S.T. Botany

M.V.H.S.S.Thundathil

T.V.M.

School Code 1054

TVM Cluster

BLUE PRINT

Type of questions

Unit Chapter Objective ShortAnswer

Essay Chapterwise

Scare

Unitwise

score

Reproduction in organisms (1/2)

1(1

1/2)

1- 2

1 Sexual Reproduction inflowering plants

(1

/2)7

(11

/2)1

(3)1

5 7

2 Strategies for

enhancement in food

production

(3)

13 3

Biotechnology. Principles

and processes.

(2)

24

3

Biotechnology and its

applications

(2)

24

8

Organisms and

populations

(2)

2

(2)

14

Ecosystem (2)1

(3)

14

4

Environments Issues (2)2

4

12

3 18 9 30 30

plus two biology model question paper

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