8/9/2019 Biology Theory Prilims 12 Th 2015

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METAS ADVENTIST INTERNATIONAL SCHOOL(Affiliated to ICSE & ISC Council, New Delhi)

Tichakpura, Vyara

PRILIMINARY EXAMINATIONS 2014 2015

Nae ! """""""""""""""""""""""""" #oll$ No$! """"""" Cla%%! II 'A &

Su*ect! I++-./I 0ark%! 12 Tie ! 34r% Date!32'25'6257

PART I (20 Marks)

Answer all questions.

!"s#$%& 1

(a) '$" a r$"* a&s+"r *%r "a,- %* #-" *%ll%+$&./ 4M

5$ 8hat i% ack cro%% and te%t cro%%96$ Define En:ironental re%i%tance and carryin; capacity$

3$ 8hat i% cryopre%er:ation & ;ene ank9

rinciple of iitin; actor$

(ii) The recapitulation theory$(iii) Di%co:ered the fo%%il ofArchaeopteryx.

(i:) De%cried doule fertili%ation in plant%

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PART II (50 Marks)

SECTION A

Answer any TWO questions. {10Marks}!"s#$%& 2

(a) De%crie different type% of natural %election with the help of ;raph%$ 6() -i:e two chroo%oal %iilaritie% etween an and ape%$ 1(c) -i:e two di%tin;ui%hin; feature% of the Cro-Magnon man$ 1

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(a) De%crie how the ori;in of life fro aiotic %u%tance% wa% pro:ed e=perientally y

0iller and Brey$ 6() -i:e one %i;nificant difference etweenBiogeny and Cognogeny$ 1(c) 8hat i% a vestigial organ9 -i:e one e=aple$ 1

!"s#$%& 4

(a) 8hat are the a%ic po%tulate% of Darwini%9 8hat i% the o*ection a;ain%t Darwini%9 6() 8rite two di%tincti:e feature% ofAustralopithecus. 1

(c) Define atavism$ 1

SECTION 7 8

Answer any TWO questions. 920Marks:

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(a) Draw a well laelled dia;ra of the $S$ of an anatropou% o:ule *u%t efore fertili?ation$ 4() 8rite %hort note% on the followin;! 4 (i) Endo%per

(ii) Aniocente%i%

(c) -i:efour %i;nificant difference% etween active andpassive a%orption of water in plant%$2

!"s#$%& ;

(a) riefly de%crie the echani% of de:elopent of a onocot eryo$ 4

() -i:e two %i;nificant difference% etween each of the followin;! 4(i) #aceo%e and Cyo%e inflore%cence

(ii) Self/pollination and Cro%% pollination

(c) 8rite a rief note on 0T>$ 2

!"s#$%& (a) Define hybriization$ E=plain the techni@ue of hyridi?ation in plant%$ 4() 8hat are the iplication% of the lo%% of iodi:er%ity9 4(c) -i:e one %i;nificant difference etween! 2

(i) 4ydrophyte% and erophyte%(ii) Inreedin; and +utreedin;

!"s#$%& 10

(a) -i:efour application% of recoinant DNA technolo;y$ 4() 8rite %hort note% on! 4

(i) 4aeophilia

(ii) Down% Syndroe

(c) E=plain the proce%% of %e= deterination in huan%$ 2