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NEETREVISIONSERIES
STRUCTURALORGANISATIONINANIMALS
ReviseMostImportantQuestionstoCrackNEET2020
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Q-1-14145047
Pseudostratified epithelium is found in
(A)rectum
(B)urinarybladder
(C)wallofoesophagus
(D)innderliningofbronchiole
CORRECTANSWER:D
SOLUTION:
Preudostratifiedepitheliumisfoundinplaceswhere
mucusissecreted.Thusinnerliningofbronchioleshas
pseudostratifiedepithelium.
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Q-2-14145110
Which of the following is incorrect fot Pheretima ?
(A)Genitialpapillaearepresenton and
segment
(B)Malegentualporesarepresenton segment
(C)Clitellumispresentonsegments24,25and26
(D)Segmentsofearthwormarecalledsomites.
CORRECTANSWER:C
SOLUTION:
17th 19th
18th
Clitellumorcingulumisaprominentcircularbandof
glandularskinfoundfromthe to segments.It
secretesmucusandalbumenwhichhelpsinthe
formationofcocoon,andisusedoffertilisationofthe
eggs.
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Q-3-15219623
which of the following is not a function of areolar connective tissue
?
(A)Storingnutrientsasfat
(B)Defendingthebodyagainstinfection
(C)Movementofbodyparts
(D)Holdingbodyfluids
14th 16th
CORRECTANSWER:A
SOLUTION:
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Q-4-23702305
When the glandular cells breakdown completely , the gland is
known as
(A)Holocrinegland
(B)Apocrinegland
(C)Merocrinegland
(D)Noneoftheabove.
CORRECTANSWER:A
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N /A
Q-5-23702341
Calcified cartilage is found in humans in
(A)Headoffemur
(B)Pectoralgirdle
(C)Ribsandsternum
(D)BothAandB.
CORRECTANSWER:A
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Q-6-23702368
Muscles get fatigued due to accumulation of
(A)Adenosinetriphosphate
(B)
(C)Lacticacid
(D)Phosphatemolecules.
CORRECTANSWER:C
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Q-7-23702417
Power of regeneration is poor in
(A)Braincell
(B)Bonecell
(C)Chondroblasts
(D)Striatedmuscles.
CORRECTANSWER:A
CO2
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Q-8-40376747
Epithelial tissues lie on the basement membrane. It is made up of
(A)Basallaminacomposedofmucopolysaccharidesand
glycoproteinssecretedbyepithelialcells
(B)Fibrouslaminacomposedofcollagenandreticular
fibersofunderlyingconnectivetissue
(C)Both(1)and(2)
(D)Cellularlayer
CORRECTANSWER:C
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Q-9-34100228
Formation of cartilage bones involves
(A)depositionofbonymatterbyosteoblastsand
resorptionbychondroclasts
(B)depositionofbonymatterbyosteoclastsand
resorptionbychondroblasts
(C)onlydepositionofbonymatterbyosteolastsonly
(D)depositionbybonymatterbyosteoblastsonly
CORRECTANSWER:D
SOLUTION:
Osteoblastsareboneformingcellswhileosteoclastsare
bone-destroyingcells.Ossificationorosteogenesisis
theprocessofboneformation.
Chondroblastsarecartilageformingcells.
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Q-10-34100222
Stratum germinativum is an example of which kind of epithelium ?
(A)Cuboidal
(B)Ciliated
(C)Columnar
(D)Squamous
CORRECTANSWER:C
SOLUTION:
Stratumgenninativum(StratumMalpighi/Stratum
cyhndricum)consistsofcolumnarcellsrestingupona
commonbasementmembrane.
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Q-11-34100235
Haversian canal occurs in
(A)humerus
(B)pubis
(C)scapula
(D)clavicle
CORRECTANSWER:A
SOLUTION:
Haversiancanal,namedafterCloptonHavers'arefine
channelsparalleltothelongaxisofmammalianbone
contamingbloodvessels,nervefibres,connectivetissue
andoccasionallylymphaticvessels.Haversiansystemis
foundinlongbonesofmammals(humerusamonggiven
options)andabsentinspongybonesofmammals.
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Q-12-23702421
Number of nuclei present in striped muscle fibre is
(A)One
(B)Many
(C)Two
(D)None.
CORRECTANSWER:B
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Q-13-15219630
Tissue which is found in abdomen, around kidneys and under skin
is called.
(A)nervetissues
(B)Cardiactissues
(C)skeletalissues
(D)adiposetissues
CORRECTANSWER:D
SOLUTION:
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Q-14-14145120
Male cockroach differs from female cockroach in having
N /A
(A)antennae
(B)labrum
(C)maxillae
(D)analstyles
CORRECTANSWER:D
SOLUTION:
Malesbearapairofshort,thread-likeanalstyleswhich
arenotpresentinfemales.
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Q-15-14145068
Consider the following statements (i) - (iii), each with one or two
blanks
(i) Bones have a hard and non-pliable ground substance rich in 1–
and which give bone its strength
(ii) Some of the columnar or cuboidal cells get speciallised for
secretion and are called epithelium
(iii) junctions help to stop substances form leaking across a tissue
Which one of the following options, gives the correct fills ups for
the respective blanks from (1) to (4) in the statements ?
(A)(3)-glandular,(4)-Tight
(B)(1)-calciumsalts,(2)-collagenfibres,(3)-compound,
(4)-Excretorty
(C)(3)-glandular,(4)-Adhering
(D)(1)-magnesiumsalts,(2)-elasticfibres,(3)-compound
CORRECTANSWER:A
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Q-16-14145112
2–
3–
4–
Which one of the following structures in Pheretima is correctly
matched with its function ?
(A)Clitellum-Secretescocoon
(B)Gizzard-Absorbsdigestedfood
(C)Setae-Providesdefenceagainstpredators
(D)Typhlosole-Storageofextranutrients
CORRECTANSWER:A
SOLUTION:
Clitellum-secretescocoonwherefertilisationand
developmenttakesplace
Gizzard-grindsthefood
Setae-helpinlocomotion
Typhlosole-increasesareaofabsorptioninintestine.
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Q-17-23702336
Volkmann's canal connects
(A)Osteocytewithmatrix
(B)Differentbones
(C)Haversiancanalwithmatrix
(D)HaversiancanalwithotherHaversiancanals.
CORRECTANSWER:D
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Q-18-23702385
Which of the following possesses nodes of Ranvier ?
(A)Medullatednervefibre
(B)Non-medullatednervefibre
(C)Musclefibre
(D)Medullatedandnon-medullatednervefibres.
CORRECTANSWER:A
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Q-19-23702442
Harversian canals are found in
(A)Muscle
(B)Nerve
(C)Cartilage
(D)Bone.
CORRECTANSWER:D
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Q-20-40376753
Ciliated columnar epithelium called ependyma is present in the
lining of
(A)Fallopiantubes
(B)Ventriclesofbrain
(C)Nasalpassage
(D)Bronchioles
CORRECTANSWER:B
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Q-21-34100234
Histamine secreting cells are found in
(A)connectivetissue
(B)lungs
(C)musculartissue
(D)nervoustissue
CORRECTANSWER:A
SOLUTION:
Histamineisavasodilator,involvedinallergicand
inflammatoryreactions.Itissecretedbymastcells,
thesearemodifiedbasophilsofbloodthatoccurin
areolartissuei.e.thelooseconnectivetissue
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Q-22-34100220
The functional unit of contractile system in a striated muscle is
(A)myofibril
(B)sarcomere
(C)Z-lines
(D)crossbridges
CORRECTANSWER:B
SOLUTION:
Skeletalmuscleisalsocalledstriatedmusclebecause
theregulararrangementofthemyofilamentscreatesas
repeatingpatternoflightanddarkbands.Each
repeatingunitisasarcomere,thebasicfunctionalunitof
muscle.
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Q-23-40376759
Which of the following epithelia covers the inner linings of trachea,
large bronchi, and helps to remove mucus?
(A)Ciliatedcolumnar
(B)Pseudo-stratifiedepithelium
(C)Compoundepithelium
(D)Cuboidalepithelium
CORRECTANSWER:B
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Q-24-34100216
Simple epithelium is a tissue in which cells are
(A)hardenedandprovidesupporttotheorgan
(B)cementeddirectlytooneanothertoformasingle
layer
(C)continouslydividingtoprovideformtoanorgan
(D)looselyconnectedtooneanothertoformanirregular
organq
CORRECTANSWER:C
SOLUTION:
Simpleepitheliumisatissueinwhichthecellsare
cementeddirectlytooneanothertoformasinglelayer.
Anepitheliumisasheetortubeoffirmlyadherentcells
withminimum(practicallynegligible)materialandspace
betweenthem.
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Q-25-34100227
Vitamin K is required for
(A)formationofthromboplastin
(B)conversionoffibrinogentofibrin
(C)conversionofprothrombintothrombin
(D)synthesisofprothrombin
CORRECTANSWER:D
SOLUTION:
Vitamin-K(phylloquinone)isrequiredforthesynthesLS
ofprothrombinnecessaryforbloodclotting.Itis
synthesisedbybacteriainthecolonVitamin-Kis
commonlycalledanti-haemorrhagicvitamin.Its
deficiencyleadstobleeding,i.e.nocoagulationor
clotting.
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Q-26-14145090
Read the following statements and select the correct option
(i) Blood cells secrete fibres of structural proteins called collagen
and elastin
(ii) Neuroglial cells protect and support the nephrons
(iii) Osteocytes are present in spaces called lacunae
(iv) Striated muscle fibres are bundled together in a parallel fashion
(v) Biceps are involuntary and striated.
(A)Statements(iii)and(iv)areincorrect
(B)Statement(ii)and(iv)areincorrect
(C)Statement(i)and(iii)areincorrect
(D)Statements(i),(ii)and(v)areincorrect.
CORRECTANSWER:D
SOLUTION:
Thestructuralproteinscollagenandelastinarepresent
inwhitecollagenfibresandyellowelasticfibres
respectively,whichareconnectivetissuefibres.
Neuroglialcellsarespecialisedcellsfoundinthebrain
andspinalcordsupportingtheneuronsandtheirfibres.
Themusclesofbicepsarevoluntaryandstriated.
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Q-27-15219632
Which of the following is not a type of tissue ?
(A)Muscle
(B)Embryonic
(C)Nervous
(D)Epithelial
CORRECTANSWER:B
SOLUTION:
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Q-28-23702327
Formulation of antibodies is the function of
(A)Monocytes
(B)Neutrophils
(C)Basophils
(D)Lymphocytes.
CORRECTANSWER:D
N /A
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Q-29-23702365
Chemical ions responsible for muscle contraction are
(A) and
(B) and
(C) and
(D) and ions.
CORRECTANSWER:D
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Q-30-23702437
Bundles of striated muscle fibres are enclosed in
Ca+ + K +
Na+ K +
Na+ Ca+
Ca+ + Mg+ +
(A)Periosteum
(B)Epimysium
(C)Perimysium
(D)Endomysium.
CORRECTANSWER:B
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Q-31-40376750
Which of the following epithelia forms the inner lining of lung
alveoli, blood vessels and peritoneum of body cavity ?
(A)Cuboidal
(B)Squamous
(C)Columnar
(D)Ciliatedcolumnar
CORRECTANSWER:B
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Q-32-34100224
Basement membrane is made up of
(A)onlyepidermalcells
(B)onlyendodermalcells
(C)Both(a)and(b)
(D)nocellatall,butisaproductofepithelialcells
CORRECTANSWER:D
SOLUTION:
Thecellsofepithelialtissuesrestuponathinlayer
composedofproteinboundmucopoly-saccharictesand
glycoproteins,bothsecretedbyP.pithelialcells(hence,
productofepithelialcell)alongwithalayerofcollagen
fibresoftheunderlyingconnectivetissue.
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Q-33-34100231
Characteristics of smooth muscle fibres are
(A)spindle-shaped,unbranched,unstriated,
uninucleateandinvoluntary
(B)spindle-shaped,unbranched,unstriped,
multinucleateandinvoluntary
(C)cylindrical,unbranched,unstriped,multinucleate
andinvoluntary
(D)cylindrical,unbrached,unstriated,multinucleate
andvoluntary
CORRECTANSWER:A
SOLUTION:
Smoothmusclefibresarespindle-shaped,thickinthe
middleandthinateitherends,uninucleated,no
sarcolemma,contractionisslow,involuntaryunderthe
controlofautonomousnervoussystemThesemuscles
arealsoknownasvisceralmuscles,non-striated,non-
skeletalorinvoluntarymuscles.
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Q-34-23702392
Apocrine secretion of gland means
(A)Whentheproductisreleasedbutthecellremains
intact
(B)Whenentirecontentsofcellisdischargedwiththe
destructionofthecell
(C)Whenpartofapicalcytoplasmislost
(D)Noneofthese.
CORRECTANSWER:C
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Q-35-14145095
Which of the following layers you will find in the body wall of
earthworm (from outside to inside) ?
(A)Non-cellularcuticle,epidermis,circularmuscles,
longitudinalmuscles,coelomicepithelium
(B)Cuticle,epidermis,longitudinalmuscles,circular
muscles,coelomicepithelium
(C)Non-cellularcuticle,epidermis,coelomicepithelium,
circularmuscles,longitudinalmuscles
(D)Cuticle,epdermis,peritonealmuscles
CORRECTANSWER:A
SOLUTION:
Externallythebodywallofearthwormiscoveredbya
thinnoncellularcuticlebelowwhichliestheepidermis,
twomusclelayers(circularandlongitudinal)and
innermostcoelomicepthelium.
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Q-36-14145117
Complete the following flowchart by selecting the correct option
(A)
(B)
(C)
(D)
CORRECTANSWER:C
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ABCDStipesHypopharynxExopoditeFirstmaxillae
ABCDStipesExopoditeHypopharynxFirstmaxillae
ABCDFirstmaxillaeHypopharynxExopoditeStipes
ABCDFirstmaxillaeExopoditeHypopharynxStipes
Q-37-14145141
In a frog, if a hole is punched in the floor of its buccal cavity, then
the frog will not die as
(A)buccalrepirationdoesnotstop
(B)pulmonaryrespirationoccurs
(C)itcanstoreoxygenforfutureuse
(D)repirationotherthanlungswillcontinue
CORRECTANSWER:B
SOLUTION:
Inadditiontobuccopharyngealrespiration,frogalso
respiresthroughlungs(pulmonaryrespiration).So,ifa
holeispunchedinthefloorofitsbuccalcavitythefrog
doesn'sdie.
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Q-38-15219637
The articular cartilage is characterized by all of the following
features except
(A)Itisdevoidofperichondrium
(B)Ithasarichbloodsupply
(C)Itisavascular
(D)Itlacksthecapacitytoregenerate
CORRECTANSWER:B
SOLUTION:
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: −
N /A
Q-39-23702398
Diapedesis means
(A)Movementofthefoodingut
(B)FormationofW.B.C.
(C)Theprocessbywhichleucocytessqueezethrough
thincapillarywall
(D)FormationofR.B.C.
CORRECTANSWER:C
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Q-40-40376751
Which of the following mammalian tissues is associated with
filtration and diffusion?
(A)Simplecolumnar
(B)Simplesquamous
(C)Stratifiedsquamous
(D)Stratifiedcolumnar
CORRECTANSWER:B
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Q-41-34100213
Which of the following cells do not form layer and remain
structurally separate ?
(A)Epithelialcells
(B)Musclecells
(C)Nervecells
(D)Glandcells
CORRECTANSWER:C
SOLUTION:
Onlynervecellsdonotformlayern,theyalsoremain
structurallyseparatefromeachother(though
communicatewitheachotherthroughsynapse).
Nervecellsorneuronsarethecellsspecialisedto
conductanelectrochemicalcurrent,nervetissueis
madeupofthesecellsandsupportingcells.
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Q-42-34100230
Component of blood responsible for producing antibodies is
(A)thrombocytes
(B)monocytes
(C)erythrocytes
(D)lymphocytes
CORRECTANSWER:D
SOLUTION:
Lymphocytes(20-25%)arethesecondmostabundant
leucocytes.Theseprotestusfrommpathogensandare
involvedintheproductionofantibodies.These
lymphocytesareoftwotypes,whichareknownasB-
lymphocytesandT-lymphocytes.
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Q-43-34100208
Extermities of long bones possess cartilage
(A)Calcifiedcartilage
(B)Hyalinecartilage
(C)Elasticcartilage
(D)Fibrouscartilage
CORRECTANSWER:B
SOLUTION:
Hyalinecartilageispresentattheendoflongarticular
bones.Itprovidesasmootharticularsurfacetopermit
movementatjoints.Elasticcartilageisfoundwhere
supportwithflexibilityisneededsuchasinexternalears.
Fibrouscartilageisaverytoughsubstanceandisused
inplacesofthebodywhereshockabsorbersareneeded
e.g.,discsbetweenthevertebraeandinthekneejoint.
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Q-44-34100218
Which of the following is not exclusively supplied with involuntary
muscles ?
(A)Muscularcoatsofbloodvessels
(B)Musclesoftheductsofglands
(C)Musclesofiris
(D)Musclesofurethra
CORRECTANSWER:B
SOLUTION:
Musclesoftheductsofglandsare.notexclusively
suppliedwithinvoluntarymuscles.Smoothmusclesare
involuntarymusclesandarefoundintheposteriorpart
ofoesophagus,stomach,urinogenitaltract,blood
vessels,irisofeyeanddermisofskin.
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Q-45-40376754
Brush-bordered cuboidal epithelium is present in
(A)Intestine
(B)Proximalconvolutedtubule
(C)Stomach
(D)Gallbladder
CORRECTANSWER:B
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Q-46-34100206
Which one of the following contains the largest quantity of
extracellular material ?
(A)Myelinatednervefibres
(B)Striatedmuscle
(C)Areolartissue
(D)Stratifiedepithelium
CORRECTANSWER:C
SOLUTION:
Looseconnectivetissue,alsocalledareolarconnective
tissue,isthe'packingmaterial'ofthebodythatanchors
bloodvessels,nervesandbodyorgans.Itcontains
fibroblaststhatsynthesisethefibresandground
substanceofconnectivetissueandwandering
macrophagesthatphagocytisepathogensordamaged
cells.Thedifferentfibretypesincludestrongcollagen
fibresandthinelasticfibresformedoftheproteinelastin.
Adipose.(fat)tissueisconsideredatypeofloose
connectivetissue
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Q-47-34100211
Nasal septum gets damaged . Its recovery requires cartilage called
(A)Hyalinecartilage
(B)Elasticcartilage
(C)Calcifiedcartilage
(D)Fibrouscartilage
CORRECTANSWER:A
SOLUTION:
Hyalinecartilageformsnasalseptum,larynx,trachea
andhyoidapparatus
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Q-48-40376756
Germinal epithelium of testis and ovary is made up of
(A)Columnarepithelium
(B)Squamousepithelium
(C)Cuboidalepithelium
(D)Stratifiedepithelium
CORRECTANSWER:C
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Q-49-34100226
Epithelial tissue with thin flat cells appearing like packed tiles
occurs on
(A)innerliningofcheek
(B)innerliningofstomach
(C)innerliningofFallopiantubes
(D)innerliningofovary
CORRECTANSWER:D
SOLUTION:
Epithelialtissuewiththinflatcellsappearinglikepacked
tilesoccursoninnerliningofovary.Itiscalledgerminal
epithelium.
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Q-50-14145099
One very special feature in the earthworm is that
(A)fertilisationofeggsoccursinsidethebody
(B)thetyphlosolegreatlyincreasestheeffective
absorptionareaofintestine
(C)theS-shapedsetaeembeddedintheintegumentare
thedefensiveweaponsusedagainsttheenemies
(D)ithasalongdorsaltubularheart
CORRECTANSWER:B
SOLUTION:
Fromthe segementupto23-25segmentinfrontof
theanusinintestineofearthworm,liesahighlyglandular
andvascularpartcalledtyhlosole.Itgreatlyincreases
theeffectiveabsorptionareafordigestedfoodinthe
intestine.
27th
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Q-51-15219639
Haversian canals are found in
(A)Avesbones
(B)Mammalianspongybone
(C)Mamaliancompactbone
(D)Allbones
CORRECTANSWER:C
SOLUTION:
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Q-52-40376758
: −
N /A
All the statements about stereociliaare correct except
(A)Theyarenon-motile
(B)Thesearefoundinepididymisandvasdeferens
(C)Ithas9+2ultrastructure
(D)Thebasalgranuleisabsent
CORRECTANSWER:C
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Q-53-34100217
Polysaccharide found in cartilage matrix is
(A)cartilagin
(B)ossein
(C)chondriotin
(D)casein
CORRECTANSWER:C
SOLUTION:
Thechiefcomponentofgroundsubstancesofcartilage
ischondromucoproteinwhichisformedofchondriotin
sulphate,keratinsulphateandhyaluronicacid.
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Q-54-14145094
Earthworms have no skeleton but during burrowing, the anterior
end becomes turgid and acts as a hydrauluc skeleton. It is due to
(A)gutperistalsis
(B)setae
(C)coelomicfluid
(D)blood
CORRECTANSWER:C
SOLUTION:
Hydraulicskeletonisthesystemofsupportfoundinsoft
bodiedinvertebrates,whichreliesonthe
incompressibilityoffluidscontainedwithinthebody
cavity.Inearthworms,thecoelomicfluidisunder
pressurewithinthecoelomandthereforeprovides
supportforinternalorgans,Duetohydraulicskeleton,
duringburrowing,theanteriorendbecomesturgidand
aidsinrelaxationoflongitudinalmuscles.
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Q-55-14145126
Select the correct statement from the ones given below with respect
to Periplaneta americana.
(A)Nervoussystemlocateddorsally,consistsof
segmentallyarrangedgangliajoinedbyapairof
longitudinalconnectives.
(B)Malesbearapairofshortthreadlikeanalstyles
(C)Thereare16verylongMalpighiantubulespresentat
thejunctionsofmidgutandhindgut
(D)Grindingoffoodiscarriedoutonlybythemouth
parts.
CORRECTANSWER:B
SOLUTION:
Inmalecockroach,fromthesidesofthe sternum,
therearisesapaired,smallunjoinedoutgrowthscalled
analstyles.Thesestructuresaresensitivetotouch.
9th
Theseareabsentinfemalecockroach.Nervoussystem
islocatedventrally.Thereare100-150Malpighian
tubules.Grindingoffoofiscarriesoutbymouthparts
andgizzard.
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Q-56-15219618
Name the issue which coverts the external surface of animal body
and internal surface of the visceral organs
(A)epithelialtissues
(B)connectivetissue
(C)musculartissue
(D)nervoustissue
CORRECTANSWER:A
: −
SOLUTION:
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Q-57-15219624
Which of the following tissues lines the majority of digestive tract ?
(A)Simplecolumnar
(B)Simplesquamous
(C)Pseudostratifiedciliatedcolumnar
(D)Stratifiedcuboidal
CORRECTANSWER:A
SOLUTION:
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N /A
N /A
Q-58-15219636
Loose connective tissue is made of which three essential
components
(A)Cellsgroundsubstanceandcarbohydratesfibers
(B)Cellgroundsubstanceandproteinfibers
(C)Collagen,groundsubstanceandproteinfibers
(D)Matix,groundsubstanceandfluid.
CORRECTANSWER:B
SOLUTION:
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Q-59-14145101
: −
N /A
Which of the following is absent in the coelomic fluid of earthworm
?
(A)Salts
(B)Haemoglobin
(C)Corpuscles
(D)Proteins
CORRECTANSWER:B
SOLUTION:
Coelomicfluidofearthwormisalkaline,colourlessfluid
containingwater,salts,someproteinsandcorpuscles.
Haemoglobinisnotpresentincoelomicfluid.Itisfound
dissolvedinbloodplasmagivingredcolourtoblood.
Bloodisconfinedtoheartandvesselsinclosed
circulatorysystem.
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Q-60-14145055
Areolar connective tissue joins
(A)bonewithbone
(B)fatbodywithmuscles
(C)integumentwithmuscles
(D)bonewithmuscles
CORRECTANSWER:C
SOLUTION:
Areolartissueispresentundertheskinassubcutaneous
tissueinbetweenandaroundmuscles,nervesand
bloodvesselsinsubmucosaofgastro-intestinaltractand
respiratorytract,inthebonemarrow,betweenthelobes
andlobulesofcompoundglandsandinmesenteriesand
omenta.
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