download doubtnut now · aschelminthes are bilaterally symmetrical, triploblastic and dioecious...
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NEETREVISIONSERIES
ANIMALKINGDOM
ReviseMostImportantQuestionstoCrackNEET2020
DownloadDoubtnutNow
Q-1-34597122
what is common between Ascaris lumbricoides and Anopheles
stephensi ?
(A)Hibernation
(B)Metamerism
(C)Anaerobicrespiration
(D)Sexualdimorphism
CORRECTANSWER:D
SOLUTION:
BothA.lumbricoidesandA.stephensi,havedifferent,
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malesandfemalesanditispossibletodistinguish
betweenthemmorphologically.
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Q-2-13466507
The animals posseing the following type of germ layers (A and B)
are called __________and_____respectively.
(A)diploblastic,triploblastic
(B)triploblastic,diploblastic
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(C)diploblastic,diploblastic
(D)triploblastic,triploblastic
CORRECTANSWER:A
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Q-3-34597127
Long hollow bones connected by passages are characteristics of
(A)Aves
(B)mammals
(C)Reptilia
(D)landvertebrates
CORRECTANSWER:A
SOLUTION:
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Thebonesofbirdsarepneumatic,(i.e.theyhaveair
cavities)toreduceweightwhichhelptheminflying.
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Q-4-13466510
The figures give below show the types of coelom. Identify them and
select the correct group of organisms which possess tham.
(A)
(B)
A B C
Annelids Ascheliminthes Platyhelimthes
A B C
Molluscs Arthropods Platyhelimthes
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(C)
(D)
CORRECTANSWER:A
SOLUTION:
Figure isofcoelomates(Annelids),figure isof
pseudo-coelomates(Aschelminthes)andfigure isof
acoelomates(Platyhelminthes).
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Q-5-17542239
Water currents in Leucosolenia are produced by
A B C
Echinoderms Aschelminthes Annelids
A B C
Echinoderms Arthropods Platyhelminthes
' A' ' B'
' C'
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(A)Choanocytes
(B)Pinacocytes
(C)Archaeocytes
(D)Thesocytes
CORRECTANSWER:A
SOLUTION:
(a)Watercurrentsproducedbychoanocytesbecause
theyareflagellated.
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Q-6-34597176
Which one of the following animals possesses nerve cells but no
nerves?
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(A)Hydra
(B)Tapeworm
(C)Earthworm
(D)Frog'stadpole
CORRECTANSWER:A
SOLUTION:
Hydrahasnervecellsbutnonerves.Hydrapossessesa
veryprimitivenervoussystemconsistingofasynaptic
networkofbipolarandmultipolarnervecells.
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Q-7-13466512
Select the correct matching of animals, their symmetry, organisation
and coelom type.
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(A)
(B)
(C)
(D)
CORRECTANSWER:C
SOLUTION:
Platyhelminthesaretriploblastic,acoelomateorganisms
showingbilateralsymmetry.Ctenophoreshaveradial
symmetry,areacoelomateshavingdiploblastic
Animals Symmetry Organisation CoelomtypeCtenophores Radial Diploblastic Pseudocoelomates
Animals Symmetry Organisation CoelomtypeEchinoderms Bilateral Triploblastic Coelomates
Animals Symmetry Organisation CoelomtypePlatyhelminthes Bilateral Triploblastic Acoelomates
Animals Symmetry Organisation CoelomtypeAnnelids Biradial Diploblastic Coelomates
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organisation.Inechinoderms,larvaehavebilateral
symmeterywhileadultshavebilateralsymmetrywhile
adultshaveradialsymmetery.Theyarecoelomateswith
triploblasticorganisation.Annelidsaretriploblastic,
coelomateorganismsshowingbilateralsymmetry.
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Q-8-17542209
A radially symmetrical diploblastic animal is
(A)Roundworm
(B)Earthworm
(C)Hydra
(D)LiverFluke
CORRECTANSWER:C
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Q-9-13466516
Which of the following is correctly matched?
(A)Radialsymmetry-Coelenterates
(B)Coelomates-Aschelminthes
(C)Metamerism-Molluscs
(D)Triploblastic-Spongs
CORRECTANSWER:A
SOLUTION:
Coelenterateshaveradialsymmetry.Aschelminthesare
pseudocoelomates.Molluscsdonotshowmetamerism.
Spongesarediploblastic.
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Q-10-17542669
Johnston's organ found in
(A)Antennaofmosquito
(B)Headofcockroach
(C)abdomenofhousefly
(D)abdomenofspider
CORRECTANSWER:A
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Q-11-17542184
An animal which comes out at night and hides during day time is
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(A)Diurnal
(B)Nocturnal
(C)Cursorial
(D)Arboreal
CORRECTANSWER:B
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Q-12-34597069
Which one of the following in birds, indicated their reptilian
ancestry
(A)Scalesontheirhindimbs
(B)Fourchamberedheart
(C)Twospecialchamberscropandgizzardintheir
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digestivetract
(D)Eggswithacalcareousshell
CORRECTANSWER:D
SOLUTION:
NearlyacenturyagoTHHuxleycalledbirdsglorified
reptiles'therebymeaningthatbirdshaveevolvedfrom
somereptilianancestor.Bothbirdsandreptileslaythe
sametypeofeggs,whicharedepositedoutsidewater.
Eggsarelargeandtelolecithal.Theovumissurrounded
byalbumen,aneggmembraneandathickhard
calcareousshell,whichareallsecretedbyspecial
glandslocatedinthewallsofoviduct.
Likemammalsbirdsalsohavecompletefourchambered
heartwithdoublecirculation,inwhichthereisnomixing
ofpureandimpurebloods.
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Whereas,theventricleisimperfectlydividedinreptiles,
resultinginpartialmixingofblood.
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Q-13-17543328
Retractile claws are found in
(A)CatandLion
(B)Leopard
(C)Hyaena
(D)Alloftheabove
CORRECTANSWER:D
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Q-14-13466528
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Which of the following is not a correct match of animal and its
habitat?
(A)Hydravulgaris-Seawater
(B)Hydragangetica-Freshwater
(C)Obelia-Seawater
(D)Physalia-Seawater
CORRECTANSWER:A
SOLUTION:
Hydravulgarisisafreshwateranimal.
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Q-15-17543181
The following mammal lays eggs
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(A)Porcupine
(B)Platypus
(C)Kangaroo
(D)Koala
CORRECTANSWER:B
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Q-16-34597102
A terrestrial animal must be able to
(A)excretelargeamountsofwaterinurine
(B)conservewater
(C)activelypumpsaltsoutthroughtheskin
(D)excretelargeamountsofsaltsinurine
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CORRECTANSWER:B
SOLUTION:
Since,terrestrialanimalsdonothaveautomaticaccess
toeitherfreshorsaltwater.Theymustregulatewater
contentinotherways,balancingoffgainsandlosses.
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Q-17-13466529
Stinging capsules (nematocysts) are found in
(A)Scyphaandbriancoral
(B)ClionaandChalina
(C)Seapenandseafan
(D)GrantiaandVelella
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CORRECTANSWER:C
SOLUTION:
Sitingingcapsules(nematocysts)aretheorgansof
offenceanddefence,presentinthePhylum
Coelenterata.Seapenandseafanaremembersofthis
phylum.
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Q-18-17542246
Amphiblastula is the larva of
(A)Hydra
(B)Sycon
(C)Planaria
(D)Leucosolenia
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CORRECTANSWER:B
SOLUTION:
(b)Amphiblastulaandstereogastrulaarethelarval
stagesofsycon.
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Q-19-34597184
What is common in whale, bat and rat ?
(A)Absenceofneck
(B)Musculardiaphragmbetweenthoraxandabdomen
(C)Extra-abdominaltestestoavoidhightemperatureof
body
(D)Presenceofexternalears
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CORRECTANSWER:B
SOLUTION:
Thepresenceofdiaphragmisacharacteristicfeatureof
mammals,diaphragmactsasaseparaterbetween
thoraxandabdomen.Whale,batandratallare
mammalsandhavediaphragm.
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Q-20-13466534
Given below are three statements regarding Aschelminthes.
(i) They are bilaterally symmetrical and triploblastic.
(ii) They are dioecious.
(iii) All are plant or animal parasites.
Select the option that has both the correct statemets.
(A)(i)and(iii)
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(B)(i)and(iii)
(C)(ii)and(iii)
(D)Noneofthese
CORRECTANSWER:A
SOLUTION:
Aschelminthesarebilaterallysymmetrical,triploblastic
anddioeciousanimals.Theymaybefree-living,aquatic
andterrestrialorparasiticonplantsandanimals.
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Q-21-34597220
An insect regarded as greatest mechanical carrier of disease is
(A)Pediculus
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(B)Cimex
(C)Musca
(D)Xenopsylla
CORRECTANSWER:C
SOLUTION:
Musca(housefly)isthecarrierofmanydiseaseas
anthrax,trachoma,diarrhoea,tuberculosis,leprosy,
gaugrene,plague,gonorrhoea,typhoid,choleraand
dysentery.
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Q-22-17542229
Glass Rope sponge is
(A)Hyalonema
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(B)Euplectella
(C)Scypha
(D)Spongilla
CORRECTANSWER:A
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Q-23-34597194
Aristotle's Lantern occurs in class
(A)Echinoidea
(B)Asteroidea
(C)Holothuroidea
(D)Ophiuroidea
CORRECTANSWER:A
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SOLUTION:
AbitingormasticatoryapparatusorAristotle'slantern'is
presentinthemembersofclass-Echinoidea.
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Q-24-17542206
An enterocoelomates invertebrate group is
(A)Annelida
(B)Echinodermata
(C)Arthropoda
(D)Mollusca
CORRECTANSWER:B
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Q-25-34597259
Flight muscles of bird are attached to
(A)clavicle
(B)keelofsternum
(C)scapula
(D)coracoid
CORRECTANSWER:B
SOLUTION:
Sternumofbirdsislarge,usuallywithavertical,
midneutralkeelwhichprovidesattachmentofflight
muscles.
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Q-26-34597258
Eutherians are characterised by
(A)hairyskin
(B)trueplacentation
(C)ovoviviparity
(D)glandularskin
CORRECTANSWER:B
SOLUTION:
Infraclass-Eutheriaincludesviviparousplacental
mammals.Theygivebirthtoyoungones.Whichgets
nourishmentthroughplacentainsidethebodyofits
mother.
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Q-27-34597247
Fish which can be used in biological control of
mosquitoes/Larvicidal fish is
(A)eel
(B)carp
(C)catfish
(D)Gambusia
CORRECTANSWER:D
SOLUTION:
Gambusia(mosquitofish)eatsthelarvaeofmosquito,
soitisusedinbiologicalcontrolofmosquito.
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Q-28-34597247
Fish which can be used in biological control of
mosquitoes/Larvicidal fish is
(A)eel
(B)carp
(C)catfish
(D)Gambusia
CORRECTANSWER:D
SOLUTION:
Gambusia(mosquitofish)eatsthelarvaeofmosquito,
soitisusedinbiologicalcontrolofmosquito.
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Q-29-34597269
Both male and female pigeons secrete milk through
(A)salivaryglands
(B)modifiedsweatglands
(C)crop
(D)gizzard
CORRECTANSWER:C
SOLUTION:
Bothmaleandfemalepigeonsecretemilkthroughcrop
duringbreedingseason.
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Q-30-13466521
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In the most simple type of canel system of Porifera, which of the
following ways exhibit water flow?
(A)Ostia Spongocoel Osculum Exterior
(B)Spongocoel Ostia Osculum Exterior
(C)Osculum Spongocol Ostia Exterior
(D)Osculum Ostia Spongocoel Exterior
CORRECTANSWER:A
SOLUTION:
Thecentralbodycavityofspongesiscalledspongocoel.
Theirbodyisporus.Theinhalentporesarecalledostia
andexhalentporesareknownasoscula.Thebodyofa
spongeisorganisedinsuchmannerastoforma
complexsystemofporesandcanals.Thissystemis
calledcanalsydstem.Waterflowsinthroughostiato
→ → →
→ → →
→ → →
→ → →
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spongocoelandcomesouttoexteriorviaosculum.
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Q-31-34597142
Which one of the following is exotic Indian fish
(A)Catlacatla
(B)Heteropneustesfossilis
(C)Cyprinuscaprio
(D)Lebeorohita
CORRECTANSWER:C
SOLUTION:
Cyprinuscaprioistheexoticbreed.Itisalsoknownas
commoncarp.Itisawidespreadfreshwaterfishof
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eutrophicwaterlakesandriversinEuropeandAsia.
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Q-32-13466564
Match the animal names listed under column I with the zoological
names gives under column II and select the correct option from the
gives codes.
(A)A-(ii),B-(iii),C-(iv),D-(i)`
(B)A-(iii),B-(iv),C-(i),D-(v)`
(C)A-(ii),B-(i),C-(iv),D-(iii)
ColumnI ColumnII
(Commonname) (Zoologicalname)
A. Starfish (i)Sepia
B. Jellyfish (ii)Asterias
C. Devilfish (iii)Aurelia
D. Cuttlefish (iv)Octopus
(v)Hippocampus
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(D)A-(iv),B-(i),C-(iv),D-(ii)
CORRECTANSWER:A
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Q-33-17542210
Radial symmetry is often exhibited by animals having
(A)oneopeningofalimentarycanal
(B)Aquaticmodeofliving
(C)Benthos//sedentarynature
(D)Ciliarymodeoffeeding
CORRECTANSWER:C
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Q-34-13466521
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In the most simple type of canel system of Porifera, which of the
following ways exhibit water flow?
(A)Ostia Spongocoel Osculum Exterior
(B)Spongocoel Ostia Osculum Exterior
(C)Osculum Spongocol Ostia Exterior
(D)Osculum Ostia Spongocoel Exterior
CORRECTANSWER:A
SOLUTION:
Thecentralbodycavityofspongesiscalledspongocoel.
Theirbodyisporus.Theinhalentporesarecalledostia
andexhalentporesareknownasoscula.Thebodyofa
spongeisorganisedinsuchmannerastoforma
complexsystemofporesandcanals.Thissystemis
calledcanalsydstem.Waterflowsinthroughostiato
→ → →
→ → →
→ → →
→ → →
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spongocoelandcomesouttoexteriorviaosculum.
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Q-35-17542920
Which one of the following feature is found in chordates but not in
non-chordates
(A)Gills
(B)Spiracles
(C)Postanaltail
(D)Chitinousexoskeleton
CORRECTANSWER:C
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Q-36-17542187
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Non - chordates have
(A)Notocord
(B)Dorsaltubularnervechord
(C)Pharyngealgillscleft
(D)Absenceofhepaticportalsystem
CORRECTANSWER:D
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Q-37-17542269
Collar cells occur in
(A)Sponges
(B)Hydra
(C)Sandworm
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(D)Starfish
CORRECTANSWER:A
SOLUTION:
(a)Collarcellsoccurinspongesandlocatedatthe
anteriorendofeachchoanocyte.
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Q-38-13466535
In which of the following, segmentation in the body is first
observed?
(A)Aschelminthes
(B)Arthropoda
(C)Annelida
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(D)Platyhelminthes
CORRECTANSWER:C
SOLUTION:
Segmentationisdivisionordifferentiationofthebody
intodistinctportionscalledsegments.Itisfirstobserved
inPhylumAnnelida.
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Q-39-17542194
What is characteristic of deuterostomes
(A)Spiralcleavage,blastoporebecomingmouth
(B)Radialcleavage,blastoporebecominganus
(C)Spiralcleavage,blastoporebecominganus
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(D)Radialcleavage,blastoporebecomingmouth
CORRECTANSWER:B
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Q-40-13466554
Which one of the following statements about certain given animals
is corret?
(A)Roundwormsarepseudocoelomates.
(B)Mollucusareacoelomates.
(C)Annelidsarepseudocoelomates.
(D)Flatwormsarecoelomates.
CORRECTANSWER:A
SOLUTION:
![Page 40: Download Doubtnut Now · Aschelminthes are bilaterally symmetrical, triploblastic and dioecious animals. They may be free-living, aquatic and terrestrial or parasitic on plants and](https://reader033.vdocument.in/reader033/viewer/2022053115/6091a81bc0276725985dbf56/html5/thumbnails/40.jpg)
Roundwormsarepseudocoelomates.Molluscsand
annelidsarecoelomateswhileflatwormsare
acoelomates.
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Q-41-17542211
Arboreal mammals have
(A)Jumpingcharacter
(B)Burrowingcharacter
(C)Climbingcharacter
(D)Flyingcharacter
CORRECTANSWER:C
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Q-42-34597152
Tube feet occur in
(A)cockroach
(B)starfish
(C)cuttlefish
(D)catfish
CORRECTANSWER:B
SOLUTION:
Instarfishlocomotiontakesplacebyexternaltubefeet,
connectedwithwatervascularsystem.
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Q-43-17542909
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Retrogressive metamorphosis is found in
(A)Balanoglossus
(B)Branchiostoma
(C)Herdmania(Urochordata)
(D)Allofthese
CORRECTANSWER:C
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Q-44-13466539
Match column I with column II and select the correct option from
the given codes.
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(A)A-(ii),B-(i),C-(v),D-(iv),E-(iii)
(B)A-(i),B-(ii),C-(iii),D-(v),E-(iv)
(C)A-(i),B-(ii),C-(iv),D-(iii),E-(v)
(D)A-(ii),B-(i),C-(iv),D-(v),E-(iii)
CORRECTANSWER:D
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Q-45-34597255
Photoreceptors of Earthworm occur on
ColumnI ColumnII
A. Protandry (i)Ovariesmatureearlierthantestes
B. Protogyny (ii)Testesmatureearlierthanovaries
C. Metamericsegmentation (iii)Scorpion
D. Radialsymmetry (iii)Neresi
E. Booklungs (iv)Aurelia
![Page 44: Download Doubtnut Now · Aschelminthes are bilaterally symmetrical, triploblastic and dioecious animals. They may be free-living, aquatic and terrestrial or parasitic on plants and](https://reader033.vdocument.in/reader033/viewer/2022053115/6091a81bc0276725985dbf56/html5/thumbnails/44.jpg)
(A)clitellum
(B)manyeyes
(C)dorsalsurface
(D)lateralsides
CORRECTANSWER:C
SOLUTION:
Photoreceptors(withL-shapedlensoropticorganelles)
arepresentonthesurfaceofskinondorsalside.
Earthwormhasnoeyes,photoreceptorsareusedto
judgeintensityanddurationoflight,butdonothavethe
capacityofvision.
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Q-46-17542204
![Page 45: Download Doubtnut Now · Aschelminthes are bilaterally symmetrical, triploblastic and dioecious animals. They may be free-living, aquatic and terrestrial or parasitic on plants and](https://reader033.vdocument.in/reader033/viewer/2022053115/6091a81bc0276725985dbf56/html5/thumbnails/45.jpg)
Tiny free living animals on the surface of water consitute
(A)Zooplankton
(B)Phytoplankton
(C)Benthon
(D)Symbionts
CORRECTANSWER:A
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Q-47-34597218
Which one occurs in echinodermata
(A)Bilateralsymmetry
(B)Radialsymmetry
(C)Porousbody
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(D)Softskin
CORRECTANSWER:B
SOLUTION:
Musca(housefly)isthecarrierofmanydiseaseas
anthrax,trachoma,diarrhoea,tuberculosis,leprosy,
gaugrene,plague,gonorrhoea,typhoid,choleraand
dysentery.
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Q-48-13466568
Which one of the following is a matching pair of a body feature and
the animal possessing it?
(A)Ventralcentralnervoussystem-Leech
(B)Pharyngealgillslitsabsentinembryo-Chameleon
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(C)Ventralheart-Scorpion
(D)Post-analtail-Octopus
CORRECTANSWER:A
SOLUTION:
Leechpossessesaventralcentralnervoussystem.
Scorpionhasadorsalheart.Phyrygealgillslitsandpost-
analtailarecharacteristicfeaturesofchordates.
Chameleonisachordate,soitpossessespharyngeal
gill-slitsinembryonicstage.Octopusisanon-chordate.
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Q-49-17543217
Only poisonous mammal or monotreme mammal is
(A)Ornithorhychus
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(B)Echidna
(C)Guineapig
(D)Snake
CORRECTANSWER:A
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Q-50-17542186
Enterocoelous coelom is found in
(A)Deuterostomia
(B)Astomia
(C)Protostomia
(D)Blastostomia
CORRECTANSWER:A
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SOLUTION:
(a)Echinodermatesandchordatesaredeuterostomous
animals,inwhichblastoporeofgastrulaformsanus,so
anusisformedearlierthenmouth.
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Q-51-17542267
Thesocytes serve as
(A)Sexcells
(B)Slimesecretingcells
(C)Foodreserve
(D)Embryoniccells
CORRECTANSWER:C
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Q-52-34597165
mucus helps frog in forming
(A)thickskin
(B)dryskin
(C)smoothskin
(D)moistskin
CORRECTANSWER:D
SOLUTION:
Mucushelpsfroginkeepingtheskinmoistthathelpsin
cutaneousrespirationwhenthefrogisinhibernationor
estivation.
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Q-53-17542202
Which one of the following does not have larvae in its life cycle
(A)Prawn
(B)Earthworm
(C)Crab
(D)Cockroach
CORRECTANSWER:B
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Q-54-34597166
Tracheae of Cockroach and Mammal are similar in having
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(A)pairednature
(B)non-collapsiblewalls
(C)ciliatedinnerlining
(D)originfromhead
CORRECTANSWER:B
SOLUTION:
Thetracheaofcockroachandmammalsislinedwith
spiralthickeningofcuticlecalledintinawhichprevents
thetrachealtubesfromcollapsing.
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Q-55-17543316
In bioluninesence storage, energy changes into
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(A)Lightenergy
(B)Radiantenergy
(C)chemicalenergy
(D)Mechanicalenergy
CORRECTANSWER:A
SOLUTION:
Bioluminescenceisamethodoflightproducingbyliving
organismsinwhichusallycertainproteincalledluciferins
inthepresenceofoxygenandanenzymeluciferase,are
convertedtooxyluciferinswiththelibrationoflight.
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Q-56-13466641
Which one of the following categories of animals, is correctly
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described with no single exception in it ?
(A)Allreptilespossessscales,haveathreechambered
heartandarecoldblooded(poikilothermal)
(B)Allbonyfisheshavefourpairsofgillsandan
operculumoneachside
(C)Allspongesaremarineandhavecollaredcells
(D)Allmammalsareviviparousandpossessdiaphragm
forbreathing.
CORRECTANSWER:B
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Q-57-17542212
In constrast to annelids the Platyhelminthes show
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(A)Radialsymmetry
(B)Presenceofpseudocoel
(C)Bilateralsymmetry
(D)Absenceofbodycavity
CORRECTANSWER:D
SOLUTION:
(d)TruecoelomispresentinAnnelidwhile
platyhelmintheshavepseudo(false)coelomcalled
pseudocoelomateanimals.
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Q-58-13466559
Which of the following is commonly called "pearl oyster" ?
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(A)Limulus
(B)Dentalium
(C)Pinctada
(D)Aurelia
CORRECTANSWER:C
SOLUTION:
PinctadabelongstoPhylumMolluscaandiscommonly
calledpearloyster.
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Q-59-34597248
Jelly fish is placed in which class of coelenterata
(A)Hydrozoa
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(B)Scyphozoa
(C)Anthozoa
(D)Noneofthese
CORRECTANSWER:B
SOLUTION:
Aurelia(jellyfish)belongstoclass-Scyphozoaofphylum-
Cnidaria.Itiswithoutskeleton.
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Q-60-17542193
Blind sac body plan is shown by
(A)Roundworms
(B)Annelids
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(C)Coelenterates
(D)Arthropods
CORRECTANSWER:C
SOLUTION:
(c)Blindsacbodyplanisfoundincoelenteratesandflat
worms.Inthistypeofbodyplananimalshasasingle
openingthatactasbothmouthandanus.
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Q-61-34597137
Functionwise, just as there are nephridia in an earthworm, so are
(A)parotidglandsintoad
(B)statocystsinprawn
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(C)flamecellsinliverfluke
(D)myotomesinfish
CORRECTANSWER:C
SOLUTION:
Flamecellsinliverflukeareexcretoryorgansas
nephridiainanearthworm.
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Q-62-17542218
Veliger larva occurs in phylum
(A)Mollusca
(B)Echinodermata
(C)Arthropoda
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(D)Cnidaria
CORRECTANSWER:A
SOLUTION:
(a)Veliger,trochophereorglochidiumlarvaare
charactersticofmollusca.
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Q-63-13466545
Which one of the following features is common in silver
fish,scorpion, dragonfly and prawn?
(A)Threepairsoflegsandsegmentedbody
(B)Chitinouscuticleandtwopairsofantennae
(C)Jointedappendagesandchitinousexoskeleton
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(D)Cephalothoraxandtracheae
CORRECTANSWER:C
SOLUTION:
Silverfish,scorpion,dragonflyandprawnbelongtothe
PhylumArthropoda.Themembersofthisphylumhave
characteristicfeatureofjointedappendages.
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Q-64-17542198
On the basis of organisation, animals are grouped into
(A)MetozoaandEumetazoa
(B)ProtozoaandMetazoa
(C)ProtozoaandParazoa
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(D)ParazoaandMetazoa
CORRECTANSWER:B
SOLUTION:
(b)Wholeanimalkingdomisclassifiedintotwosub-
kingdomprotozoaandmetazoa.Unicellularanimalsare
placedinprotozoawhilemulticellularareincludedin
metazoa.
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Q-65-34597031
What will you look for to identify the sex of the following
(A)Malefrog-Acopulatorypadonthefirstdigitofthe
hindlimb
(B)Femalecockroach-Analcerci
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(C)Maleshark-claspersborneonpelvicfins
(D)FemaleAscaris-Sharplycurvedposteriorend
CORRECTANSWER:C
SOLUTION:
Aclasperisamaleanatomicalstructurefoundinsome
groupsofanimalsandusedinmating.
Malecartilaginousfishlikesharkhaveclaspersformed
fromtheposteriorportionoftheirpelvicfinwhichserves
asintermittentorgansusedtochannelsemenintothe
female'scloacaduringmating.
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Q-66-13466588
Match the excretory organs listed under column I with the animals
given under column II and select the correct option.
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(A)A-(ii),B-(v),C-(iv),D-(iii)
(B)A-(iv),B-(iii),C-(i),D-(v)
(C)A-(v),B-(ii),C-(iv),D-(iii)
(D)A-(ii),B-(iv),C-(v),D-(i)
CORRECTANSWER:A
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Q-67-17542235
In Leucosolenia, digestion takes place in the
ColumnI ColumnII
(Excretoryorgans) (Animals)
A. Nephridia (i)Hydra
B. Malpighiantubules (ii)Leech
C. Protonephridia (iii)Shark
D. Kidneys (iv)Roundworms
(v)Cockroach
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(A)Paragastriccavity
(B)Stomach
(C)Osculum
(D)Foodvacuole
CORRECTANSWER:D
SOLUTION:
(d)Foodvacuoleistransferredtoamoebocytesand
digestioniscompletedthere.
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Q-68-34597195
Eye of the molluscan group that resembles vertebrate eye is
(A)Bivalvia
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(B)Gastropoda
(C)Pelecypoda
(D)Cephalopoda
CORRECTANSWER:D
SOLUTION:
Cephalopodacontaninsthemostspecialisedmolluscs
includingsquids,Octopus,cuttlefish.Intheseanimals
welldevelopedeyesarepresentwhichresembles
vertebrateeyes.
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Q-69-13466591
Which of the following is/are not the characteristics of the Class
Osteichthyes?
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(i) Body is streamlined and mouth is terminal.
(ii) Gills are convered by operculum.
(iii) Skin convered with cycloid and placoid scales.
(iv) Many of them are viviparous.
(A)(iv)only
(B)(iii)and(iv)
(C)(i),(iii)and(iv)
(D)(i)and(ii)
CORRECTANSWER:B
SOLUTION:
InOsteichthyes,skiniscoveredwithcycloid ctenoid
scales.Theyaremostlyoviparous.
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Q-70-17543444
Antennary glands of crustaceans are meant for
(A)Excretion
(B)Respiration
(C)Digestion
(D)Circulation
CORRECTANSWER:A
SOLUTION:
Theexcretorysystemofcrustacea(Palaemon)consists
ofapairofantenaryorgreenglands,apairoflateral
ductsandanunpairedrenalornephroperitonealsac
coxaofeachantennaenclosesanantennarygland
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Q-71-17542195
Mouth develops first in the embryo and anus is formed later in
(A)Deuterostomes
(B)Protostomes
(C)Echinoderms
(D)Chordates
CORRECTANSWER:B
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Q-72-34597099
Presence of gills in the tadpole of frog indicates that
(A)fisheswereamphibiousinthepast
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(B)fishesevolvedfromfroglikeancestors
(C)frogswillhavegillsinfuture
(D)frogsevolvedfromgilledancestors
CORRECTANSWER:D
SOLUTION:
AccordingtobiogeneticlawofErnstHaeckel(1860)
OntogenyrepeatsPhylogeny.Ontogenyisthelife
historyofanorganism,whilephylogenyisthe
evolutionaryhistoryoftheraceofthatorganism.Inother
wordswecansay'anorganismrepeatsitsancestral
historyduringitsdevelopment'.Hence,resembalanceof
Amphibiatofishisseeninmostsystemsofthebody,
botharecold-blooded,bothrespirebygills(astadpoleof
frog),bothusuallylayeggsinwaterleadingtothe
conclusionthatamphibianshaveoriginatedfromfishes.
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Q-73-13466671
Match the following list of animals with their level of organisation.
Choose the correct match showing division of labour with animal
example.
(A)i-B,ii-C,iii-Dandiv-A
(B)i-B,ii-D,iii-Candiv-A
(C)i-D,ii-A,iii-Bandiv-C
(D)i-A,ii-D,iii-Candiv-B
DivisionofLabour AnimalA. Organlevel i. PheretimaB. Cellularaggregatelevel ii. FasciolaC. Tissuelevel iii. SpongillaD. Organsystemlevel iv. Obelia
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CORRECTANSWER:C
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Q-74-34597133
Pneumatic bones are expected to be found in
(A)pigeon
(B)houselizard
(C)frog'stadpole
(D)flyingfish
CORRECTANSWER:A
SOLUTION:
Inbirdslikepigeonbonesarepneumaticorhollowand
havenomarrow,thushelpsinreducingthebodyweight.
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Q-75-17542190
Which of the following phylum are included in enterozoa
(A)Annelida,Mollusca,Porifera
(B)Echinodermata,Hemichordata,porifera
(C)Mollusca,Arthropoda,Hemichordata
(D)Porifera,Mollusca,Arthropoda
CORRECTANSWER:C
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Q-76-34597232
Ecdysis is shedding of
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(A)stratumcorneum
(B)epidermis
(C)dermis
(D)stratummalpighi
CORRECTANSWER:A
SOLUTION:
Ecdysisistheremovalofoutermostpartiallycornified
layerofstratumcorneum,whichisthenreplacedbythe
cellsformedbystratumgerminativum.
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Q-77-13466658
Match animals give in column B with their respective mode of
locomotion from column A and select the correct option.
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(A)w-I,x-II,y-II,z-IV
(B)w-IV,x-VI,y-IV,z-III
(C)w-IV,x-II,y-II,z-I
(D)w-IV,x-VI,y-II,z-I
CORRECTANSWER:D
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Q-78-17542233
Common bath sponge is
ColumnA ColumnB
w. Ciliarylocomotion I. Earthwormx. Loopingmovement II. Nereis
y
. AlternatemovementsofmultiplelimbsII. Crab
z
. CircularandlongitudinalmusclesinthebodyIV . Planaria
V . AmoebaV I. Leech
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(A)Spongilla
(B)Euspongia
(C)Leucosolenia
(D)Sycon
CORRECTANSWER:B
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Q-79-34597084
Biradial symmetry and lack of cnidoblasts are the characteristics of
(A)Starfishandseaanemone
(B)CtenoplanaandBeroe
(C)Aureliaandparamecium
(D)Hydraandstarfish
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CORRECTANSWER:B
SOLUTION:
CtenoplanaandBeroelackcnidoblastsandhave
biradialsymmetry.Thesebelongtophylum-Ctenophora.
Hydra,seaanemoneandAureliaarecoelenterates
whichhavecnidoblasts.Althoughseaanemonehas
biradialsymmetry.
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Q-80-13466570
Animals belonging to Phylum Chordata are fundamentally
characterised by the presence of structures noted as A, B C and D.
Identify them and select the correct option.
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(A)A-Notochord,B-Nervecord,
C-Gillslits,D-Post-analpart
(B)A-Nervecord,B-Notochord,
C-Gillslits,D-Post-analpart
(C)A-Nervecord,B-Notochord,
C-Post-analpart,D-Gillslits
(D)A-Nervecord,B-Gillslits,
C-Notochord,D-Post-analpart
CORRECTANSWER:B
SOLUTION:
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Thegivenfigureshowstheinternalorganisationofa
hypotheticalchordate.Itpossesesnotochord either
duringearlyembroyonicstageorthroughoutlife.The
notochordliesventraltonervecord .Itpossesesa
postanaltail andpairedpharyngealgillslits .
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Q-81-17542910
The lamprey (Petrmyzon) in induced in the same taxonomic class as
the
(A)Chamadeon(Anoils)
(B)Hagfish(Myxine)
(C)Salamander(Ambstoma)
(D)Lungfish(Neoceratodus)
(B)
(A)
(D) (C)
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CORRECTANSWER:B
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Q-82-34592189
" Prove that "sqrt((sec theta-1)/(sec theta+1))+sqrt((sec
theta+1)/(sec theta-1))=2csc theta
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Q-83-34597090
Which unicellular organism has a macronucleus for trophic function
and one or more micronuclei for reproduction ?
(A)Euglena
(B)Amoeba
(C)Paramecium
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(D)Trypanosoma
CORRECTANSWER:C
SOLUTION:
Parameciumisaheterokaryoticorganism,i.e.ithastwo
nucleinearthecytostome(oral-shapedopeningcalled
mouth).Themacronucleus,whichisaconspicuous
largerellipsoidalvegetativenucleus,dividesamitotically
andcontrolsthevegetativecharactersandmicronucleus
isasmallcompactreproductivenucleuswhichdivides
mitoticallyandcontrolsthereproduction.
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Q-84-13466646
What is common between parrot, platypus and kangaroo ?
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(A)Toothlessjaws
(B)Functionalpostanaltail
(C)Oviparity
(D)Homoiothermy
CORRECTANSWER:D
SOLUTION:
ParrotbelongstotheClassAveswhereasplatypusand
kangaroobelongtotheclassMammalia.Bothavesand
mammalsarehomoiotherms,i.e.,thetemperatureof
theirbodyremainsconstantirrespectiveofthe
temperatureoftheenvironment.
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Q-85-13466548
![Page 83: Download Doubtnut Now · Aschelminthes are bilaterally symmetrical, triploblastic and dioecious animals. They may be free-living, aquatic and terrestrial or parasitic on plants and](https://reader033.vdocument.in/reader033/viewer/2022053115/6091a81bc0276725985dbf56/html5/thumbnails/83.jpg)
How do you differentiate a butterfly from a moth?
(A)Mothhasfeatheryantennaebutbufferflyhasclub
shapedantennae.
(B)Mothhasonepairofwingsbutbutterflyhastwo
pairsofwings.
(C)Mothisdiurnalbutbutterflyisnocturnal.
(D)Mothhassimpleeyesbutbufferflyhascompound
eyes.
CORRECTANSWER:A
SOLUTION:
Mothhasshortandfeatherlikeantennaewhilebutterfly
haslong,filamentousandclub-shapedantennae.
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Q-86-34597208
Ascaris larva is called
(A)cysticercus
(B)rhabditiform
(C)hexacanth
(D)onchosphere
CORRECTANSWER:C
SOLUTION:
Ascarislarvaiscalledrhabditoidorrhabditiformdueto
itscloseresemblancewithRhabditis.
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Q-87-17543446
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Praying mantis is a good example of
(A)Socialinsects
(B)Camouflage
(C)Mullerianmimicry
(D)Warningcolouration
CORRECTANSWER:B
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Q-88-34597226
Blood of Pheretima is
(A)bluewithhaemocyaninincorpuscles
(B)bluewithhaemocyanininplasma
(C)redwithhaemoglobinincorpuscles
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(D)redwithhaemoglobininplasma
CORRECTANSWER:D
SOLUTION:
BloodofPheretimaisredincolourandrespiratory
pigmenthaemoglobinisdissolvedinbloodplasma.
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Q-89-13466575
Crocodile and penguin are similar to whale and dog fish in which
one of the following features?
(A)Possesasolidsinglestrandedcentralnervous
system
(B)Layeggsandguardthemtilltheyhatch
(C)Possesbonyskeleton
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(D)Havegillslitsatsomestage
CORRECTANSWER:D
SOLUTION:
Crocodile,penguin,whaleanddogfishareallchordates
andhavepharyngealgillslitsatsomestageoflife
history.Thisisthecharacteristicfeatureofchordates.
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Q-90-34597222
Bladderworm /cysticercus is the larval stage of
(A)tapeworm
(B)roundworm
(C)pinworm
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(D)liverfluke
CORRECTANSWER:A
SOLUTION:
Bladderworm/Cysticercusistheisthelarvalstageof
tapeworm.Itisfoundinthemusclesofpigandthisisthe
stagethroughwhichmangetsinfectedbyeatingrawor
poorlycooked'measlypork'.
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Q-91-17542924
The jawless vertebrate is
Or
A jawless fish, which lays eggs in fresh water and whose
ammocoetes larva after metamorphosis return to the occean is
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(A)Crocodile
(B)Loris
(C)Hyla
(D)Fox
CORRECTANSWER:D
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Q-92-13466586
Go through the following flow chart for division of subphylum
vertebrate. Fill the graph A, B, C and D and select the correct
option.
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(A)
(B)
(C)
(D)
CORRECTANSWER:A
A B C D
Ostracodermi Cyclostomata Pisces Tetrapoda
A B C D
Cyclostomata Ostracodermi Pisces Tetrapoda
A B C D
Ostracodermi Tetrapoda Cyclostomata Pisces
A B C D
Pisces Ostracodermi Tetrapoda Cyclostomata
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SOLUTION:
SubphylumVertebrataisdividedintotwodivisions.They
areagnatha(jawless)andgnathostomata(withjaw).
AgnathaareextinctandCyclostomata(e.g.,hagfish).
Jawedvertebratesaredividedintotwosuperclasses-
Pisces(truefish)andTetrapoda(fourlimbs).
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Q-93-34597201
Adult Culex and Anopheles can be distinguished with the help of
(A)mouthparts/colour
(B)sittingposture
(C)antennae/wings
(D)feedinghabits
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CORRECTANSWER:B
SOLUTION:
ThebodyofAnophelesmosquitomakesanangleof
whilesittingwhereasthebodyofCulexmosquitolies
paralleltothesurface.
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Q-94-17542925
Herdmania belongs to which subphyia
(A)Cephalochordata
(B)Hemichordata
(C)Urochordata
(D)Protochordata
45
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CORRECTANSWER:C
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Q-95-13466665
Which one of the following sets of animals belong to a single
taxonomic group ?
(A)Cuttlefish,Jellyfish,Silverfish,Dogfish,Starfish
(B)Bat,Pigeon,Butterfly
(C)Monkey,Chimpanzee,Man
(D)Silkworm,Tapeworm,Earthworm
CORRECTANSWER:C
SOLUTION:
Monkey,chimpanzeeandmanareprimatesbelongingto
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classmammalia.
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Q-96-34597205
bull frog of india is
(A)Ranatigrina
(B)R.sylvatica
(C)R.ecutesbeiana
(D)R.esculenta
CORRECTANSWER:A
SOLUTION:
IndianbullfrogisRanatigrina.
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Q-97-34597215
Kidney of adult rabbit is
(A)pronephros
(B)metanephros
(C)mesonephros
(D)opisthonephros
CORRECTANSWER:B
SOLUTION:
Kidneyofadultrabbitismetanephroswhichisdivided
intocortexandmedullaanditsductisuseless.Thisis
mostadvancedtypeofkidneyfoundinmanandrabbit.
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Q-98-13466567
Identify the animal (A) and name the phylum to which its belongs
(B).
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(A)A-Balanoglossus,B-Hemichordata
(B)A-Balanoglossus,B-Cephalochordata
(C)A-Nereis,B-Urochordata
(D)A-Nereis,B-Annelida
CORRECTANSWER:A
SOLUTION:
ThegivenanimalbelongstoPhylumHemichordata.The
nameoftheanimalisBalanoglossusoracornworm.
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Q-99-17542188
Cell aggregate plan is found in
(A)Cnidarians
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(B)Sponges
(C)Roundworms
(D)Flatworms
CORRECTANSWER:B
SOLUTION:
(b)Thecellaggregateplanisseeninsimplestanimals,
suchassponge.Thisplanexhibitsessentiallyclusterof
cellswithrudimentaryoflabouramongestthem.
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Q-100-34597034
One example of animals having a single opening to the outside that
serves both as mouth as well as anus is
(A)Octopus
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(B)Asterias
(C)Ascidia
(D)Fasciola
CORRECTANSWER:D
SOLUTION:
Fasciolahepatica(sheepliverfluke)belongstophylum-
Platyhelminthes.
Thesewormshaveincompletealimentarycanal,thereis
asingleopeningforbothingestionandegestion.Thisis
alsocalledasblindsacbodyplan.
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Q-101-13466590
To which classes do the following animals belong? A-Petromyzon,
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B-Scoliodon, C-Pristis
(A)A-Cyclostomate,B-Chondrichthyes,C-
Chondrichthyes
(B)A-Osteichthyes,B-Chondrichthyes,C-
Chondrichthyes
(C)A-Oseichthyes,B-Chondrichthyes,C-Osteichthyes
(D)A-Osteichthyes,B-Chondrichthyes,C-Cyclostomata
CORRECTANSWER:A
SOLUTION:
Petromyzon(Lamprey)isanexampleofClass
Cyclostomata.Scoliodon(Dogfish)andParistis(Saw
fish)areexamplesofClassChodrichthyes.
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Q-102-17542214
Pseudocoelum develops form
(A)Blastoporelip
(B)Archenteron
(C)Embryonicmesoderm
(D)Blastocoel
CORRECTANSWER:D
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Q-103-13466655
Observe the following diagrams of invertebrates embryos
illustrating the characteristics of the body plan.
Reference
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Select the correct sequence which corresponds to the phyla
represented with I, II, III, IV and V.
(A)
(B)
(C)
(D)
I II III IVCnidaria Platyhelminthes Annelida Nematoda Arthropoda
I II III IVCnidaria Platyhelminthes Nematoda Arthropoda
I II III IVNematoda Arthropoda Platyhrlminthes Cnidaria
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CORRECTANSWER:B
SOLUTION:
TheembryoofanimalIshowstwogerminallayers,
ectodermandmesoderm.Thisanimalisdiploblastic,it
canbeaporifermandmesoderm.Thisanimalis
diploblastic,itcanbeaporiferanorcnidarian.The
embroyosofallotheranimalshavethreegerminal
layers,theectoderm,mesodermandendoderm.These
animalsaretriploblasticanimals.Theycanbefrom
PhylumPlatyhelminthestoPhylumMollusca.EmbryosI
andIIhavenocoelom,IIIhaspseudocoelomandIVand
Vhavetruecoelom.Coelomisafluid-filledcavitythat
formsthemainbodycavityofanimals.itisformedby
splittingofthemesoderm.Therefore,embryosIandII
I II III IVAnnelida Cnidaria Arthropoda Platyhrlminthes
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canbeofporiferans,cnidarians,ctenophoransor
platyhelminthes,embryoIIIisofnemathelminthes,
whereasembryosofVshowsinternaldivisionsor
segmentationinthebody.EmbryoV,thusisannelidan.
So,wecanconclude,embryoIisofcnidaria,embryoII
isofplatyhelminthes,embryoIIIisofnamathelminthes,
embryoIVisofarthropodaandembryoVisofannelida.
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Q-104-17542236
Parenchymula (sponges free swimming larva) is the larva of
(A)Hydra
(B)Ascaris
(C)Pheretima
(D)Leucosolenia
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CORRECTANSWER:D
SOLUTION:
(d)InLeucosolenia,furtherdevelopmentresultsinthe
formationofstereogastrulaorparenchymulalarva.
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Q-105-13466661
Given below are types of cells present in some animals. Which of
the following cells can differentiate to perform different functions ?
(A)Choanocytes
(B)Interstitialcells
(C)Gastrodermalcells
(D)Nematocytes
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CORRECTANSWER:B
SOLUTION:
Interstitialcellsarereservecellswhichcandifferentiate
intoanytypeofcells.Nematocytesarestingingcells
usedforoffenceanddefence.Gastrodermalcellsline
thegastrodermisandintracellulardigestiontakesplace
insidethesecells.Allthesecellsarefoundincnidarians.
choanocytesarefoundissponges,theyarespecialised
flagellatedcellsthatlinespongocoelandcanals.
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Q-106-17542201
Coelom produced by splitting of mesoderm is
(A)Hydrocoel
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(B)Enterocoel
(C)Schizocoel
(D)Noneofthese
CORRECTANSWER:C
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