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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Mcq 010 2015 kerala psc botany lecturer 2009 examination part 1