Mcq 010 2015 kerala psc botany lecturer 2009 examination part 1
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Transcript of Mcq 010 2015 kerala psc botany lecturer 2009 examination part 1
MCQ010 Savepaper…Savetrees…
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KeralaPSCBotanyLecturer/AssistantProfessorQuestionPaper(Cat.NO.464/2007)
Original question paper of Kerala PSC Botany Lecturer/Assistant Professor (Category No.464/2007) examination conducted by Kerala PSC (Public Service Commission) on20/06/2009(Q.Code196/2009)fortheappointmentofBotanyLecturer/AssistantProfessorinGovernmentCollegesofKeralaundertheDirectorateofCollegiateEducation,Trivandrum,Kerala.QuestionsareinMCQ(MultipleChoiceQuestions)format.
Part–1(Questions1–25)(MCQ010)
1. Simplecollateralvascularbundlesarefoundin:
a. Equisetum
b. Lycopodium
c. Pleopteris
d. Selaginella
2. Sortoutthebranchedalga:
a. Oedogonium
b. Spirogyra
c. Zygnema
d. Ectocarpus
3. P‐proteinsarefoundin:
a. Companioncells
b. Sieveelements
c. Pith
d. Vessels
4. Calloseisa:
a. Disaccharidewww.easybiologyclass.
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b. Monosaccharide
c. Protein
d. Polysaccharide
5. Amutation in a codon leads to the substitution of one amino acid with another.
Whatisthenameforthistypeofmutation?
a. Nonsensemutation
b. Missensemutation
c. Frame‐shiftmutation
d. Promotermutation
6. Transfusiontissueingymnospermleavescomposedof:
a. Tracheids
b. Parenchymacells
c. Parenchymaandsclerenchyma
d. Tracheidsandparenchymacells
7. Homeoboxsequences:
a. Arefoundinprokaryotesbutnotineukaryotes
b. Wereidentifiedastheintegrationsitesforbacterialviruses
c. Representintegrationsitesfortransposableelements
d. Arepresentinthegenomeofmanyanimalspecies
8. Zincfingerproteinsandhelix‐turn‐helixproteinsare:
a. Involvedinthecontroloftranslation
b. Partofthehaemoglobininbloodcells
c. BoundtotransferRNAduringtranslation
d. TypesofDNAbindingproteins
9. Ahomeoticmutationisonewhich:
a. Ispresentinonlyoneforminanindividual
b. Substitutesonebodypartforanotherindevelopment
c. Iswildtypeatonetemperatureandabnormalatanother
d. Leadstoincreasedbodysizeinanorganismwww.easybiologyclass.
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10. Assuming that the level of glucose is low, a mutation in the repressor of the lac
operoninE.coli,preventingthebindingofrepressortotheoperator,shouldresult
in:
a. Constitutiveexpressionofthelacoperongenes
b. Lackofexpressionorreducedexpressionof the lacoperongenesunderall
circumstances
c. Expressionofthegenesonlywhenlactoseispresent
d. Expressionofthegenesonlywhenlactoseisabsent
11. QTLanalysisisusedto:
a. IdentifyRNApolymerasebindingsites
b. Mapgenesinbacterialviruses
c. Determinewhichgenesareexpressedatadevelopmentalstage
d. Identify chromosome regions associated with a complex trait in a genetic
cross
12. AssumingHardy‐Weinbergequilibrium,thegenotypefrequencyofheterozygotes,if
thefrequencyofthetwoallelesatthegenebeingstudiedare0.6and0.4,willbe:
a. 0.80
b. 0.64
c. 0.48
d. 0.32
13. RFLPanalysisisatechniquethat:
a. Uses hybridization to detect specificDNA restriction fragments in genomic
DNA
b. Isusedtodeterminewhetherageneistranscribedinspecificcells
c. Isusedtodetectgeneticvariationattheproteinlevel
d. Isusedtoamplifygenesforproducingusefulproducts
14. ThealgafoundinMolluscshellis
a. Cladophora
b. Ulothrixwww.easybiologyclass.
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c. Chara
d. Zygnema
15. Thesemicellsofthedesmidsremainjointogetherby:
a. Raphe
b. Sinus
c. Isthmus
d. Plasmodesma
16. Thecausativeorganismofbudrotofcoconutis:
a. Phytopthorapalmivora
b. Phytopthoraareca
c. Phytopthoracapsici
d. Phytopthorainfestans
17. Whichofthefollowingmineralelementdeficiencydonotshownecroticsymptoms?
a. Boron
b. Iron
c. Chlorine
d. Nitrogen
18. Thecytoskeletonofacelliscomprisedof:
a. Cellwallandmembranes
b. Nucleusandcytoplasm
c. Microtubulesandmicrofilaments
d. Intrinsicandextrinsicproteins
19. Anon‐membraneorganelle:
a. Ribosome
b. Dictyosome
c. Micro‐body
d. Endoplasmicreticulum
20. Whichisnotacharacteristicofleucoplasts?
a. Containfewthylakoidswww.easybiologyclass.
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b. Containribosomesinthestromainjuvenilestage
c. Containplastoglobuli
d. Boundedbyasinglemembrane
21. Whichstructurealonecannotbeobservedwithlightmicroscopy?
a. Vacuole
b. Microfilament
c. Cellwall
d. Plastid
22. Whichsequenceofprogressioniscorrect?
a. Scalariformpitting–alternatepitting–oppositepitting–annularthickening
–helicalthickening
b. Helical thickening – alternate pitting – annular pitting ‐ reticulate pitting –
scalariformpitting
c. Annularthickening–scalariformpitting–reticulatepittingalternatepitting
–oppositepitting
d. Helicalthickening–reticulatepitting–scalariformpitting–oppositepitting
–alternatepitting
23. Half‐borderedpitsarefoundbetween:
a. Rayandaxialtracheids
b. Tracheidandparenchymacells
c. Twovesselmembranes
d. Twotracheids
24. Whicharethebestfeaturesofderivedvesselmembers?
a. Long,inclinedperforationplates,simpleopenings,nopits
b. Short,widecells,simpleopenings,pits
c. Longtaperedend‐walls,pits,reticulateopenings
d. Short,narrowcells,reticulateopening,nopits
25. Afterprimarygrowthismature,elementsoftheprotoxylemare:
a. Recognizedbycircularorspiralsecondarywallthickeningwww.easybiologyclass.
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b. Transformedintometaxylem
c. Differentiatedintotracheids
d. Crushedbeyondrecognition
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