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observati
ons ,cl
i
ckpicturesdur ingacti
vity. (a)oxygen( b)car bondi oxide( c)ni trogen( d)wat er
vapour
4-Makeachar tongivent opics. 12. Thecor rects equenceofanaer obi cr eact ionsi nyeas tis
5-Sol
vegi venques t
ionsanddr awdi agramsin (a)Gl ucos ePyr uvat eEt hanol +Car bondi oxi de
revi
si
onnot ebook. (b)Gl ucos ePyr uvat eLact i
caci d( c)Gl ucos ePyr uvat e
6-Reviseclassnotesofchapt erli
feprocesses. Lact i
caci d
(d)Gl ucos ePyr uvat eEt hanol +Car bondi oxi de
Sol
vegivenquest
ionsanddrawdi
agr
amsi
nrevi
si
on
1 3. Whi choft hef ol lowi ngi smos tappr opr iat ef oraer obic
not
ebook.
res pirat ion?
*choos
et hecor
rectanswer
. (a)Gl ucos ePyr uvat eCO2+H2O+Ener gy
1. Whi choft hef ollowi ngs tatement saboutt heaut otrophs (b)Gl ucos ePyr uvat eCO2+H2O+Ener gy
i
si ncor rect ? (c)Gl ucos ePyr uvat e+Ener gyCO2+H2O
(a)Theys ynthes isecar bohydr at esf rom car bondi oxide (d)Gl ucos ePyr uvat e+Ener gyCO2+H2O+Ener gy
andwat eri nt hepr es enceofs unl i
ghtandchl or ophyl l 14. Whi choft hef ollowi ngs tat ement (
s )is( ar e)t r
ueabout
(b)Theys torecar bohydr atesi nt hef or m ofs tar ch res pirat ion?
(c)Theyconver tcar bondi oxideandwat eri nt o (i)Dur i
ngi nhal at i
on, ribsmovei nwar danddi aphr agm i s
car bohydr atesi nt heabs enceofs unl i
ght rais ed
(d)Theycons titut et hef irs
tt r
ophi clevel inf oodchai ns (ii)Int heal veol i,exchangeofgas est akespl acei .e.,
2. I
nwhi choft hef ollowi nggr oupsofor gani s ms , food ox ygenf r om al veol arai rdi ffus esi nt obl oodandcar bon
mat er i
al i
sbr okendownout sidet hebodyandabs orbed? dioxi def rom bl oodi nt oal veol arai r
(a)Mus hr oom, gr eenpl ant s,Amoeba (iii)Haemogl obi nhasgr eat eraf fi
ni tyf orcar bondi oxi de
(b)Yeas t,mus hr oom, br eadmoul d thanoxygen
(c)Par ameci um, Amoeba, Cus cut a (i
v)Al veol i i
ncr eas es ur facear eaf orexchangeofgas es
(d)Cus cut a, l
ice, tapewor m (a)( i
)and( iv)( b)( ii)and( i
ii
)( c)( i
)and( ii
i)( d)( ii)and( iv)
3. Selectt hecor rects tatement 1 5. Whi chi st hecor r ects equenceofai rpas s agedur ing
(a)Het er ot rophsdonots ynthes iset hei rownf ood i
nhal at ion?
(b)Het er ot rophsut il
ises olarener gyf orphot os ynt hes is (a)Nos trils→ l ar ynx→ phar ynx→ t rachea→ l ungs
(c)Het er ot rophss ynt hes is
et heirownf ood (b)Nas al pas s age→ t r achea→ phar ynx→ l ar ynx→
(d)Het er ot r
ophsar ecapabl eofconver tingcar bondi oxide alveol i
andwat eri ntocar bohydr ates (c)l ar ynx→ nos tril
s→ phar ynx→ l ungs
4. Whi chi st hecor rects equenceofpar tsi nhuman (d)Nos trils→ phar ynx→ l arynx→ t rachea→ al veol i
aliment ar ycanal ? 1 6. Dur i
ngr es pirat i
onexchangeofgas est akepl acei n
(a)Mout h→ s tomach→ s mal lintes ti
ne→ oes ophagus→ (a)t racheaandl ar ynx (b)al veol iofl ungs
l
ar gei nt es ti
ne (c)al veol iandt hr oat ( d)t hroatandl ar ynx
(b)Mout h→oes ophagus→ s tomach→ l ar gei nt es ti
ne→ 17. Whatpr event sbackf l
owofbl oodi ns idet hehear t
smal lint es ti
ne dur i
ngcont ract i
on?
(c)Mout h→ s t omach→ oes ophagus→ s mal lintes ti
ne→ (a)Val vesi nhear t( b)Thi ckmus cul arwal lsofvent ricles
l
ar gei nt es ti
ne (c)Thi nwal l
sofat ria ( d)Al loft heabove
(d)Mout h→ oes ophagus→ s tomach→ s mal l i
nt es t
ine→ 1 8. Singl eci rcul at i
oni .
e. ,bloodf lowst hr ought hehear t
l
ar gei nt es ti
ne onl yoncedur ingonecycl eofpas s aget hr ought hebody, i
s
5.Ifs alivar yamyl as ei slacki ngi nt hes aliva, whi choft he exhi bi tedby
followi ngevent si nt hemout hcavi t
ywi ll beaf fect ed? (a)Labeo, Chamel eon, Sal amander( b)Hi ppocampus ,
(a)Pr ot ei nsbr eaki ngdowni ntoami noaci ds Exocoet us ,Anabas( c)Hyl a, Rana, Dr aco( d)Whal e,
(b)St archbr eaki ngdowni ntos ugar s(c)Fat sbr eaki ng Dol phi n, Tur t l
e
downi nt of attyaci dsandgl ycer ol (d)Abs orpt ionof 19. Inwhi choft hef ollowi ngver tebr at egr oup/ groups ,
vitami ns hear tdoesnotpumpoxygenat edbl oodt odi fferentpar ts
6. Thei nnerl iningofs tomachi spr otect edbyoneoft he oft hebody?
followi ngf rom hydr ochl oricacid. Choos et hecor rectone (a)Pi s cesandamphi bians( b)Amphi biansandr ept iles
(a)Peps in( b)Mucus( c)Sal i
var yamyl as e( d)Bi l
e (c)Amphi biansonl y (d)Pi scesonl y
7. Whi chpar tofal i
ment arycanal r
ecei vesbi l
ef rom t he 20. Choos et hecor r ects tat ementt hatdes cr ibesar ter ies.
l
iver ? (a)Theyhavet hickel as ti
cwal ls,bl oodf l
owsunderhi gh
(a)St omach( b)Smal lint esti
ne( c)Lar gei ntes tine( d) pr es sur e;col lectbl oodf rom di ffer entor gansandbr ingi t
Oes ophagus backt ot hehear t(b)Theyhavet hinwal lswi thval ves
8. Af ewdr opsofi odi nes olutionwer eaddedt or icewat er. i
ns i
de, bloodf l
owsunderl owpr es sur eandcar rybl ood
Thes olut iont ur nedbl ue- blacki ncol our .Thi si ndicat est hat awayf rom t hehear tt ovar iousor gansoft hebody
ricewat ercont ains (c)Theyhavet hickel as t
icwal l
s, bloodf lowsunderl ow
(a)compl expr ot ei ns( b)s i
mpl epr ot eins( c)f at s( d)s tar ch pr es sur e;car rybl oodf rom t hehear tt ovar iousor gansof
9. I
nwhi chpar toft heal iment ar ycanal foodi sf inal l
y thebody
(d)Theyhavet hickel as ticwal lswi thoutvalvesi nside, earth?
bloodf lowsunderhi ghpr es s
ureandcar rybloodaway 10.Leavesofaheal thypot tedpl antwer ecoat edwi th
from thehear tt odi fferentpar tsoft hebody. vaseline. Wi llthispl antr emai nheal thyf orl ong?Gi ve
21.Thef i
lt
rationuni tsofki dneysar ecal l
ed reasonsf oryourans wer .
(a)ur eter( b)ur ethr a( c)neur ons( d)nephr ons 11.Howdoesaer obicr es pi rationdi fferf rom anaer obic
22.Oxygenl i
ber at eddur ingphot os ynthesiscomesf r
om respiration?
(a)wat er( b)chl orophyl l(c)car bondi oxide(d)gl ucos e 12.Different iat ebet weenanar teryandavei n.
23. Thebl oodl eavi ngt het i
ssuesbecomesr icherin 13.Whatar et headapt at ionsofl eaff orphot osynt hesi
s ?
(a)car bondi oxide( b)wat er(c)heamogl obin( d)oxygen 14.Whyi ss mal lintes tinei nher bivor esl ongert hani n
24.Whi choft hef ollowi ngi sani ncor r
ects t
at ement ? carnivor es ?1 5.Whatwi l
l happeni fmucusi snots ecreted
(a)Or ganis msgr owwi tht ime( b)Or ganismsmus tr epai
r byt hegas t
ricgl ands ?
andmai ntainthei rs truct ure( c)Movementofmol ecules 16.Whati sthes ignificanceofemul si
f i
cat i
onoff ats?
doesnott akepl aceamongcel ls(d)Ener gyises sent i
alfor 17.Whatcaus esmovementoff oodi ns i
det heal iment ary
l
ifepr oces ses canal ?18. Whydoesabs orpt i
onofdi ges tedf oodoccur
25. Thei nternal (cellular)ener gyr eserveinaut otrophsi s mai nlyint hes mal li
nt es tine?
(a)gl ycogen( b)pr otein( c)s tarch( d)fattyaci d 19.Whyi st her ateofbr eat hi ngi naquat i
cor gani s
msmuch
26. Whi choft hef oll
owi ngequat i
onsi sthes ummar yof fasterthani nt errestrial or gani sms ?
phot osynthes is? 20.Whyi sbl oodci rculat ioni nhumanhear tcal leddoubl e
(a)6CO2+1 2H2O→ C6H1 2O6+6O2+6H2O cir
cul ati
on?
(b)6CO2+H2O+Sunl ight → C6H1 2O6+O2+6H2O 21.Whati stheadvant ageofhavi ngf ourchamber edhear t
?
(c)6CO2+1
2H2O+Chlorophyl
l+Sunl
i
ght→ C6H1
2O6+6O2+ 22.Ment iont hemaj orevent sdur ingphot os ynthes is
.
6H2O 23.Namet heener gycur rencyi nt hel i
vingor gani sms .
(d)6CO2+12H2O+Chl
orophyl
l+Sunl
ight
→ C6H12O6+6CO2+ Whenandwher ei sitpr oduced?
6H2O
24.Whati scommonf orcus cut a, ti
cksandl eeches ?
27. Choos et heeventt hatdoesnotoccuri n
25.Expl aint her oleofmout hi ndi ges ti
onoff ood.
phot os
ynt hes is
26.Whatar et hef unct ionsofgas tri
cgl andspr esentint he
(a)Abs orptionofl ightener gybychl orophyl l
wal lofthes tomach?
(b)Reduct ionofcar bondi oxidet ocar bohydr at es
27.Namet hecor rects ubs t
rat esf orthef ollowingenzymes
(c)Oxidat ionofcar bont ocar bondi oxide
(a)Tr yps in( b)Amyl as e( c)Peps in( d)Lipas e
(d)Conver s i
onofl ightener gyt ochemi cal energy
28.Whydovei nshavet hinwal lsascompar edt oar teri
es?
28.Theopeni ngandcl osi
ngoft hes tomat alpor edepends
29. Whatwi l
l happeni fpl at eletswer eabs enti nt hebl ood?
upon( a)oxygen( b)temper at ure(c)wat eringuar dcel l
s(d)
30.Plant shavel owener gyneedsascompar edt o
concent rationofCO2i nstomat a
animal s.Expl ain. 31.Whyandhowdoeswat erent er
29.Choos et heformsi nwhi chmos tplant sabs orbnitrogen
cont i
nuous lyi ntot her ootxyl em?
(i)Proteins( ii
)NitratesandNi tr
ites(ii
i)Ur ea(iv)
32.Whyi st r
ans pirationi mpor tantf orpl ant s ?
Atmos pher icnitrogen
33.Howdol eavesofpl ant shel pi nexcr etion?
(a)(i
)and( ii
)(b)(ii
)and( ii
i)(c)(i
ii)and( iv)(d)(i)and( iv)
30.Whi chist hefi
rstenzymet omi xwithfoodi nthedi gest
ive
*LongAns
werQues
tions
t
ract
? 1.Explainthepr ocessofnut ri
tioni nAmoeba.
(a)Pepsi
n(b)Cell
ulas
e( c)Amylase(d)Tryps
in 2.Des cri
bet healimentarycanal ofman.
31.Duri
ngdefici
encyofoxygeni nti
ssuesofhumanbeings
, 3.Explainthepr ocessofbr eathi nginman.
pyruvi
cacidisconvert
edi nt
olacti
cacidinthe 4.Explainthei mpor t
anceofs oilforplantgrowt h.
(a)cytopl
asm( b)chl
oroplas
t(c)mitochondr
ia(d)gol
gi 5.Dr awt hedi agr
am ofal i
ment arycanal ofmanandl abel
body thefollowingpar ts.Mouth, Oes ophagus ,Stomach,
I
nt esti
ne
6.Howdocar bohydr at
es,pr oteinsandf atsgetdi gest
edin
*Shor
tAns
werQues
tions humanbei ngs ?
1.Namet hef ollowing 7.Explainthemechani sm ofphot osynthesi
s .
(a)Thepr ocessi npl ant sthatl i
nksl ightener gywi t
h 8. Explainthet hr
eepat hwaysofbr eakdowni nli
ving
chemicalener gy organisms .9.Des cr
ibethef l
owofbl oodthrought heheart
(b)Organi smst hatcanpr epar et hei rownf ood ofhumanbei ngs.10.Descri
bet hepr ocessofur i
ne
(c)Thecel lorganel lewher ephot os ynthes isoccur s format i
oninki dneys.
(d)Cell
sthats ur roundas tomat al por e
*Drawthef
oll
owingdiagrams-
(e)Organi smst hatcannotpr epar et heirownf ood
1-Nephr
on 2-Doubl
ecircul
ati
on3-
Hear
t
(f)Anenzymes ecretedf rom gas tri
cgl andsi ns t
omach
thatactsonpr ot ei
ns . *Labelt
hefol
lowi
ngdiagrams.
2.“Al
lplantsgi veoutoxygendur ingdayandcar bon
dioxi
dedur ingni ght ”.Doyouagr eewi t hthi sstatement ?
Givereason.
3.Howdot heguar dcel lsregul ateopeni ngandcl osingof
stomatalpor es?
4.Twogr eenpl antsar ekepts epar atelyinoxygenf r
ee
contai
ners ,onei nt hedar kandt heot heri ncont inuous
l
ight.Whichonewi llli
vel onger ?Gi ver eas ons .
5.Ifaplantisr eleas i
ngcar bondi oxi deandt aki
ngi n
oxygendur ingt heday, doesi tmeant hatt hereisno
photosynthes i
soccur ring?J usti
fyyourans wer .
6.Whydof ishesdi ewhent akenoutofwat er ?
7.Dif
ferentiatebet weenanaut ot rophandahet er otroph.
8.Is‘
nutri
t i
on’aneces sityforanor gani sm?Di scuss .
9.Whatwoul dhappeni fgr eenpl ant sdi sappearf rom