Uttarakhand Board Class 11 Question Paper 2025 Biology

UTTRAKHAND BOARD

Question Paper

~lflfq; lRmr 2024-2025 (Annual Exam 2024-2025)
°'"~ ..:.. ~ Fcl$1"'1 (Subject - Biology)
't1'14 - 3 '4er q;en - 11 (Class - 11) . ~ - 70
P;~tf- l'{ t4,:.t" 'ff °il ~ 26 w,.f t I ~ g,;, aiPt4_14 ·t I
, . aoe-~- {Section-A)
1. ~ ~q,{,q ~~ Choose the correct option. 1x10=10
(I) ll4fq;cto1 ctft' ~ ~ t-
(a) cm- (b) -~,-,a (c) ~ (d) ~
The Basic unit of claaslflcatlon Is- , .
(a) Genus (b) Kingdom, (c) Species • (d) Family
(ii) PPLO :lilct cm w"1il ~'-II Glldl t- •
(a)~ct>~ (b) ~ct>~ (c) &ll~cfii<(,11"'1( ~~ (d) ql!i¥(1!1~ti c$'~
PPLO tenn Is used for-
• (a) Virus (b) Bacteria (c) Mycoplasma (d) Virodis
(Iii) ftPt~t4.=t Qllll Gila( t- . .
(a) flq1<'1'1 it (t)) i41ltll61~~tt it (c) ~~~~ it (d) ~Riiltf~aj it
Double Fertlllzatlon Is found ln-
(a) Algae (b) Bryophytes (c) Gymnosperms (d) Angiosperms
(iv) Ptwt °il l\ ili4'Q>l-ett f- · · •
' I

(a) R~lll • (b) '11~~1~1 (c) 9"l~R41 (d) ~ ~
Which of the following Is bryophytes-
. .
(a)J Riccia (b) Marchantia (c) Funaria (d)Allofabove ..
(v) ~ ~ ~ ffl-m &6'Gt ~ t~?., r:
(a) ~ ~e)q~ • • 1 (b)~✓ ~'1•114" .(c) - . • (d) ~
•
Which of the-following is an egg laying animal?
. (a) Platypus· ·; {bl. ·Bat (c) Elephant (d) Whale
(vi) wcl>l"1(1 ~q~.-f ffl t-
(a) &11~e~4>1fa~~1 ~.(b)sRdclqch 1) (c) ~ - i j . (d) ~ ~ ~
• . Photoresplration occurs In-
(a) Mitochondria (b) Chloroplast (c) Peroxysome. (d) All
. of above
(vii)4>1flfflt-t fc\fti:S tllf<l~ ffl t ? .
(a) 31"il}llll • (b) ~ (c) ~ . . (d) ~l~'iti .
Cortisol is secreted from ?
·(a) Pancreas (b) Thyroid (c) Adrenal • (d) Thymus
(viii) 'tjtiq cl>T fll'tl~ fti~ft;tq, GTil (Sitil.f ~) ffl t- . '

(1) Class 11 ~ ~,n.i/4

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I
Th~ Normal Systolic Pressure of Human being Is ! .
(a)' aommHg . . (b) 100mmHg (c) 120mmHg (d) ~50mmHg • l
Aitt:-J1'➔ w·w. Qx) 'if (x) t f&f{ ~ ~ ftt 'l('l)' I Rit➔4= WViff ~
~ (A) '(f'f!1T ¢ ~ ilililO/ ~) 'GR( a d a,41 iJq/ 1, "''IfFif 'i/; wtt
w
ene (a), (b), (c) cre11 (d) ~ 91q;e t1~~ I . •
. Direction:- For question No. (ix) and (x) two statements are given. o~e
labeled as Assertion (A) and other labelled as Reason (R). Select the correct
anS'N9ftotl}es6questionsfrom theeodes(a), (b), (c) and (d) which are g!V9n below.
(a) A~ R $n ~ ~~ R,A ~ ~ ~l~i cf>~dl ~I •
• Both A and R are correct and R is correct explanatio·n of A.
(b) -A~ R $n :'ffift ~, ~ R, A <P°r ~ ~lt§ai ~ . cf>~dl i I ;
Both A and R are correct but R is not the correct explanation of A. 1
1
• ·(c) A~ ~, ~ R. •i~d ~ I A is correct but R is incorrect.
• (d) A~ R $n •_i<'ta ~ I Both A and Rare incorrect.·
. (ix) ~ (A) : ffj&:i cf)- ~ cpJ ~ <-11<1 m-aJ t I l
cf>li<OI (R) : ~ q;f twticl ~ if111)aci)fil1 qufcf> c6 -cf>-1~-01 m-aJ ~ I j
. .
Assertion (A): H!J~an blood is red in colour..
• · Reason (R) : The red colour of blood is due to hemoglobin pigment.
. __
· .. (x) ~ {A) : 1°1:q~l -q g•'i1 ~ t1fsb~1 cp)- q-:1g•'i1 cb61 Gtltil ~ I
.
1 ~ -q·mctt
. .: ct>1i<o1 {R) : ~~g•'i.=t -+~ee_..'1......,itl...... t1 _
. Assertion (A) : The process of pairing of chromosomes is called synapsis.
•·. • Reason (R) : Synapsis occurs in the leptotene state. ~ . i
.. • UDG-~ (Section~) ~fttla \itl~q ~ (DefiniteAnswerTypeQuestions.) l

2. ~ c6l ti'<~wilf'icf> -qci ~~lf'icf> ~ cflIT ? • · •
Wh~t is_ th~ s~ctural and functiona·I unit of the kidney.
t 1 l
i

3. ct,)~1<61 c6l \illffltUdl .~R=t~i ~ 4>61 Gtldl ~ ?. ·. • 1
Y'Jhat is called suicidal bag of cell ? .
4~ cllcl "<llcl ~ <itcl .trf. ?6. ~ ~-iffi <lofif> \d't1'<i;:I~ m-aJ t ?
1
Which pigment is responsible for red colour in red algae ? .•
- 5. li~lf qft uffef qft f<rn ~ ~ ~61lfdl ~ WfT W ticf>dl ~·? - 1
The s~und of heart can be_ ~eard with the help of ~hich device ?
· • ~ (Section-C) 31~~! \itl~~ ~ ~ery.ShortAnswertype Questions)
~ 6. C3 ~ (?4 ~ -q 31-=ii~- R=IR!JQ I · • ' · . 2 # •

-•• • Y'Jrite the differ~nce between c and c pathw~ys.
3 4
7. q;o~~I ~ ~ ~ 3ld~ ~f&Q I • · : · •
' . . 2
~rite the difference between ~endon an~ ligament.
•. ( 2) . Class 11~ fQR/4

2
Why abscisic acid is known as stress hormone ?
~- . ~ q)f11$i<i ~ T.1'R iWTifiUI ~f&Q I 2..
Write f~ur characteristics of phylum porifera.
10. 11°f 1"~i'tt ~~ q;g~ t ? ~ fq,a9 ~4>1~ q;y -g)m t° ? 2
What is Phyllota>Cy.? How many type of it is?
. 11. fl'laPtf?i:t>lldl ~ cfllT ~fl:tlli ·~ ? What is meant by hibernation ? 2
12. ~-$1' ~'<T491 tR ~ ~<>4ufl R:IRsiQ I
• • . • Write a brief comment on the structure of stomata. 2
13. ~ql<"I cJ>T ~ 'istq R;ii'&Q I Write economics importance of algae. 2
·14. '119~ qt.cl) <iGt'< q;f ~l'iifcl>d ~ csl~l~Q I . • 2 _
Draw a labelled diagram of human rib cage.
. ..<"ll<-1 ~ a n <5 ~ ft.tf&Q I . ,
15. 2
_Write the fu·nctions of red blood corpuscles.
avg-~ (Sectio n-D) ~ \i'tiflll g~.:, (Short Answe r type Questions)
16. Q~l!i~ cfllT ~-? Q¼l~'i ~ 't1'<i.i.-fl ~ fihtll~~ - q;f qu\9 c6)ftiQ I 3
. .
What are enzymes ? Explain the structure and activity of enzymes.
I

• 17. aff<Nfl~qtt.::t ~ ~4fq:-a)~qtt.=t -q 3RR R;tf&Q I.
' .3
Write difference between aerobic and anaerobic respiration.
18. ctl6'<1 '<<m •qRtti:l'(OJ -~ cfl1T dlc<44 ~ ? ~ttcf>I cfllT '16cq t ? 3
_ What is meant by double circulati~n of blood ? What is its importance?
• • 19. ~~)ttl !i~ cf ~itiel !i~ '4 ~ tqte cGl(?iQ I 3
Write difference between Nucleoside and Nucleotide?
• 20. <ts~<t> c6 ~ ~ R:iftslQ I Write the main functions of nucleus. 3 •
21. ~oq~ q;)- ~ m ~ cf>t=<cf> ~ R9Q 1 3
. Write a factors affecting fermentation. .
22. ~ ~ ~q1~R ~ ~ t I ~ ~ Rcq~ ~ft,~ I 3
• . Flower is a modified shoot. Comme nt on it.
•. 23. Pii.i~f &d fcl<tii~ ~ istifl.:t ctfr ~ q). c6i'fOI ~ 'ff ? 3
. (qi;) • "5tllfci1e'IGI c.) («) ii'fljC'{ ($IT) cm ite'lf.i,.q (~-- ~)
• _· Which hormo nal deficie ncy is respon sible for the followi ng ?
♦
• .. •

. •(a) Diabetes • (b) Goiter (c)· Cretinism .
qu4- ~ (Sectlon-E) cft"Ef e=a~~ Slil.:t (Long Answe rtype Q~estions)
.24. ~ ~ at;d~~ ~ if 3RR ~f&q I . . . 4
: Write
. the difference between mitosis and meosis.
25. ~cl~-1 qRqs.=t tf3T (ETS) q;J ffi c6)[Gi Q I 4
( 3) Class 11~~ 4

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. Describe electron transport system. •
26. .ft,\ ftq- 1N •1&i,, ~ tJ1n ~ Vffl $ \itit cfrRitq- 4
'11<U3ff ct} \i~t( 1l at 0&itill c1>T ~ ~ ~ ) 1ffiTT t I 3f041tlq ~ Qlt.4ftf4
>

'tl~I ~Pleb 311T t uf'r M~cf> '11Rtcti Tffl; il ~ ~ cf;) ec<n~d m
ff~
a1RIR4t1 ~0~1i1q ~ wif>I~ <T) ~~,~ ariff.:i ~ q;r 1fr ecQ1~-1 ~ !, ~
q~ut.=t ~ mJtte~.=t m i I (l.~\1191 q)f ~,JiqOf, ~ WJq W1d
~ 'fl
QRllfitct ID~ 3tu~Htllfr ~ ~ -maf .t f ~o~f fi•f ct> qtf.ild fad~ d p,
di ! I
.4>1Qt1 ~~f f ~ -~~ Gfldl t vIT flt> ~&ldl.11 Ml~~~.:, &Jifi.=t cJ)T Wf <!>'<
ll~Gt.:t ll-;cm il ~tflllcf> ~ft,q; 3M <tfr ~ ~ ~l.113Tf cf)T ffl' 31o~1,
1QJ
~Rq;r3ft'q;r qftd.:t, ra&ll4{~PJ$ ~on qiJ' Jlcf>G-1 ~ e=c:q 31iqlGI -$1 _-tca'<'il~
~ u~lll cf;J' qR4\:f.:t t 1~tj;;)u,.:, fal4l ~ JIPl<t> c,qqsi'< cnr A~r'fct> 1ft t 1
dlJt+e~.=t wtfqdf if ~slllc b lTia t I ~1"'~~.:, ~ u~m.·lR 'ifr cJiflf <1R ~
~ ~!f 6 4lfl1ct>1arf ~ f.l41fu1 ~ ~ ~ 'fflcJ i'f tl6illd l ffl ~ I
{cfi) \il~1'1q ~ctA--2 ~ffllfFT eN,Ra g)a-~? (a) cf>'1% ~~" q;J Ainoi ~m t?
• t {11) ~ u·~41 '6 cfllT ffi f ? ~ fer~ ~@~lief> ~q; <.¼29°1 ~ ~
Read the passage below and answer the following questions:
Females.have a pair of ovaries located in the abdomen. Ovary is the
primary female sex organ which produces one ovum during each men-
strual cycle. In addition, ovary also produces two groups of steroid hor-
mones called estrogen and proge$terone. Ovary is composed of
ovarian follicles and stromal tissues. The estrogen is synthesized arid
secreted mainly by the growing ovarian follicle. After evaluation the
ruptured follicle is converted to a structure called corpus lu~eum which
secretes mainly progesterone. . ,;L, _

r Estrogen causes wide ranging actions such as ~timuiation of growth I (' '

and activities of female secondary sex organs, develo~ment of growing
ovarian follicles, appearance .of female secondary sex characteristics
(e.g. high pitch of voice, etc) J!lammary gland development. Estrogen
also
..
regulate female sexual behavior.
Progesterone supports pregancy. Progesterone also act on teh mam-
mary gland and stim~lates the formation of alveoli (Sac like
stru~ures Which ~tore milk) and milk secretion.
(a) What hormone$ are produced from the ovary ?
(b) How is Corpus luteu,n form ?
(c) What are the functions of milk gland ?
(d) What are secondary sexual c~aracteristlcs in women ?
♦• • • • • ( 4) Class 11~fq y;{/4

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