Delhi University Entrance Test (DUET) 2020 Previous Year Question Paper With Answer Key
DU MPhil PhD in Botany
Topic: BOT MPHIL S2
1) Which one of the following statements is INCORRECT about Ginkgo?
[Question ID = 4476]
1. Leaves show dichotomous venation pattern
[Option ID = 17898]
2. Dwarf shoots are pycnoxylic
[Option ID = 17899]
3. Spermatozoids are motile
[Option ID = 17900]
4. Secondary xylem tracheids show biseriate bordered pits
[Option ID = 17901]
Correct Answer :
Dwarf shoots are pycnoxylic
[Option ID = 17899]
2) Cell wall of Archaebacteria is made up of
[Question ID = 4477]
1. Nacetylglucosamine and Nacetyltalosaminuronic acid that are linked by 1,3glycosidic bonds [Option ID = 17902]
2. Nacetylglucosamine and Nacetyltalosaminuronic acid that are linked by 1,4glycosidic bonds [Option ID = 17903]
3. Nacetylglucosamine and Nacetylmuramic acid that are linked by 1,3glycosidic bonds [Option ID = 17904]
4. Nacetylglucosamine and Nacetylmuramic acid that are linked by 1,4glycosidic bonds. [Option ID = 17905]
Correct Answer :
Nacetylglucosamine and Nacetyltalosaminuronic acid that are linked by 1,3glycosidic bonds [Option ID = 17902]
3) The outer membrane of cell wall in Gramnegative bacteria is attached to the underlying peptidoglycan layer by
[Question ID = 4478]
1. Braun's Lipoprotein [Option ID = 17906]
2. Phospholipids [Option ID = 17907]
3. Proteins [Option ID = 17908]
4. Lipopolysaccharide [Option ID = 17909]
Correct Answer :
Braun's Lipoprotein [Option ID = 17906]
4) The sum of areas of all leaves per unit area of ground refers to as
[Question ID = 4479]
1. Specific leaf area [Option ID = 17910]
2. Specific leaf mass [Option ID = 17911]
3. Leaf area index [Option ID = 17912]
4. Average leaf area [Option ID = 17913]
Correct Answer :
Leaf area index [Option ID = 17912]
5) The flame photometric method determines the following set of elements
[Question ID = 4480]
1. Sodium, potassium, lithium and phosphorus [Option ID = 17914]
2. Sodium, potassium, lithium and calcium [Option ID = 17915]
3. Sodium, potassium, lithium and magnesium [Option ID = 17916]
4. Sodium, potassium, calcium and magnesium [Option ID = 17917]
Correct Answer :
Sodium, potassium, lithium and calcium [Option ID = 17915]
6) Which of the following databases is a repository of (1) large scale genomic variants, and (2) genomewide association
studies, respectively?
[Question ID = 4481]
1. (1):POPSET; (2): dbVar [Option ID = 17918]
2. (1):dbVar; (2): dbGaP [Option ID = 17919]
3. (1):GSS; (2): dbEST [Option ID = 17920]
4. (1):POPSET; (2): GSS [Option ID = 17921]
Correct Answer :
(1):dbVar; (2): dbGaP [Option ID = 17919]
7) Spot trains in a 2D gel can be reduced by conducting IEF (isoelectric focusing) at
[Question ID = 4482]
1. 30 C
0
[Option ID = 17922]
2. 40 C
0
[Option ID = 17923]
3. 20 C
0
[Option ID = 17924]
4. 35 C
0
[Option ID = 17925]
Correct Answer :
20 C
0
[Option ID = 17924]
8) Which among the following is an INCORRECT statement about SHOOTMERISTEMLESS gene?
[Question ID = 4483]
1. It is a member of class 1 KNOX gene family [Option ID = 17926]
2. It is expressed throughout the meristem [Option ID = 17927]
3. It codes for a small polypeptide that moves between cells [Option ID = 17928]
4. It is downregulated in organ primordia [Option ID = 17929]
Correct Answer :
It codes for a small polypeptide that moves between cells [Option ID = 17928]
9) Which one of the following involves selective removal of cells in order to specifically find out the position dependent,
cellcell interaction processes that require signals from neighbouring cells?
[Question ID = 4484]
1. Ablation studies [Option ID = 17930]
2. The split luciferse complementation assay [Option ID = 17931]
3. Yeast twohybrid assay [Option ID = 17932]
4. Fluorescent insitu hybridization [Option ID = 17933]
Correct Answer :
Ablation studies [Option ID = 17930]
10) The diamond shaped axial parenchyma with lateral extensions present on one side of the vessels is known as
[Question ID = 4485]
1. lozengealiform [Option ID = 17934]
2. paratracheal [Option ID = 17935]
3. vasicentric [Option ID = 17936]
4. confluent [Option ID = 17937]
Correct Answer :
lozengealiform [Option ID = 17934]
11) Which one of the following is used as a source of energy by chemosynthetic autotrophs for synthesis of organic
molecules?
[Question ID = 4486]
1. Hydrogen peroxide [Option ID = 17938]
2. Hydrogen sulfide [Option ID = 17939]
3. dimethyl sulfide [Option ID = 17940]
4. Arsenic sulfide [Option ID = 17941]
Correct Answer :
Hydrogen sulfide [Option ID = 17939]
12) Phosphorus can be estimated by
[Question ID = 4487]
1. Ammonium molybdate blue method [Option ID = 17942]
2. Ammonium nitrate method [Option ID = 17943]
3. Stannous chloride method [Option ID = 17944]
4. Silver nitrate [Option ID = 17945]
Correct Answer :
Ammonium molybdate blue method [Option ID = 17942]
13) The Hungarian Scientist, Lajos Winkler in 1888, developed a method for estimation of
[Question ID = 4488]
1. Chloride [Option ID = 17946]
2. Dissolved O
2 [Option ID = 17947]
3. Free CO
2 [Option ID = 17948]
4. Hardness of water [Option ID = 17949]
Correct Answer :
Dissolved O
2 [Option ID = 17947]
14) Addition of which group to the Nterminus of a protein is the most common form of protein modification?
[Question ID = 4489]
1. Methylation [Option ID = 17950]
2. Adenylation [Option ID = 17951]
3. Acetylation [Option ID = 17952]
4. Phosphorylation [Option ID = 17953]
Correct Answer :
Acetylation [Option ID = 17952]
15) In a mass spectrometer, the ions are sorted out by
[Question ID = 4490]
1. accelerating them through electric field only [Option ID = 17954]
2. accelerating them through magnetic field only [Option ID = 17955]
3. accelerating them through both electric and magnetic fields [Option ID = 17956]
4. applying a high voltage [Option ID = 17957]
Correct Answer :
accelerating them through both electric and magnetic fields [Option ID = 17956]
16) A RNA:DNA hybrid in which RNA overhangs are present at both 5' and 3' ends can be made blunt ended with the help
of
[Question ID = 4491]
1. Reverse Transcriptase [Option ID = 17958]
2. Mung bean nuclease [Option ID = 17959]
3. Klenow Polymerase [Option ID = 17960]
4. T7 RNA Polymerase [Option ID = 17961]
Correct Answer :
Mung bean nuclease [Option ID = 17959]
17) The Importance Value Index (IVI) of a woody community is calculated using the formula:
[Question ID = 4492]
1. Relative frequency + Relative abundance + Relative Density [Option ID = 17962]
2. Frequency + Abundance + Density [Option ID = 17963]
3. Frequency + Abundance + Basal area [Option ID = 17964]
4. Relative frequency + Relative abundance + Relative Basal Area [Option ID = 17965]
Correct Answer :
Relative frequency + Relative abundance + Relative Basal Area [Option ID = 17965]
18) The index to find species similarities is
[Question ID = 4493]
1. ShannonWiener [Option ID = 17966]
2. Simpson's [Option ID = 17967]
3. Sorensen's [Option ID = 17968]
4. Pielou's [Option ID = 17969]
Correct Answer :
Sorensen's [Option ID = 17968]
19) A specimen derived from a nonoriginal collection that is selected to serve as the type is called
[Question ID = 4494]
1. Holotype [Option ID = 17970]
2. Lectotype [Option ID = 17971]
3. Paratype [Option ID = 17972]
4. Neotype [Option ID = 17973]
Correct Answer :
Neotype [Option ID = 17973]
20) A name spelled exactly like a validly published name for a taxon of the same rank based on different type is called
[Question ID = 4495]
1. Autonym [Option ID = 17974]
2. Basionym [Option ID = 17975]
3. Homonym [Option ID = 17976]
4. Synonym [Option ID = 17977]
Correct Answer :
Homonym [Option ID = 17976]
21) The slope and intercept obtained from (1/Rate) against (1/Substrate concentration) of an enzyme catalyzed reaction
are 600 and 2x10 , respectively. The MichaelisMenten constant of the enzyme in this reaction is
5
[Question ID = 4496]
1. 12x10
7 [Option ID = 17978]
2. 3.33x10
2 [Option ID = 17979]
3. 1.5x10
3 [Option ID = 17980]
4. 3x10
3 [Option ID = 17981]
Correct Answer :
3x10
3 [Option ID = 17981]
22) Tyrosine contains an aromatic R group and has pk =2.2, pk
1
=9.1 and pk
2
R=10.9. Its calculated isoelectric point (pI) is
[Question ID = 4497]
1. 7.4 [Option ID = 17982]
2. 10 [Option ID = 17983]
3. 5.65 [Option ID = 17984]
4. 6.55 [Option ID = 17985]
Correct Answer :
5.65 [Option ID = 17984]
23) Which one of the following statements is INCORRECT for Two Component Signaling (TCS)?
[Question ID = 4498]
1. Osmosensing in E. coli operates via a canonical TCS [Option ID = 17986]
2. CRE1 was the first TCS system to be discovered in plants [Option ID = 17987]
3. Hybrid type TCS are operational in plants [Option ID = 17988]
4. Chemosensing in E. coli involves multiple response regulators [Option ID = 17989]
Correct Answer :
CRE1 was the first TCS system to be discovered in plants [Option ID = 17987]
24) Which one of the following statements is FALSE for RILs (Recombinant Inbred Lines)
[Question ID = 4499]
1. RILs comprise individuals that are homozygous at most loci [Option ID = 17990]
2. Only loci polymorphic between the two parents can be mapped using RILs [Option ID = 17991]
3. Dominant markers will segregate in a 3:1 ratio in the RIL population [Option ID = 17992]
4. Developing RILs is more time consuming than generating F populations
2
[Option ID = 17993]
Correct Answer :
Dominant markers will segregate in a 3:1 ratio in the RIL population [Option ID = 17992]
25) Which one of the following statements is INCORRECT for the E. coli lactose operon?
[Question ID = 4500]
1. cAMP concentration in the cell is affected by amount of glucose. [Option ID = 17994]
2. CAPcAMP complex is essential for the induction of the operon. [Option ID = 17995]
3. CAPcAMP complex binds to the operater of lac operon. [Option ID = 17996]
4. The operon is induced in presence of lactose only when glucose is absent. [Option ID = 17997]
Correct Answer :
CAPcAMP complex binds to the operater of lac operon. [Option ID = 17996]
26) Which of the following statement is NOT true about SSR markers?
[Question ID = 4501]
1. They are tandemly repeated sequences. [Option ID = 17998]
2. They are analyzed using primers complementary to their hyper variable flanking regions. [Option ID = 17999]
3. They are codominant. [Option ID = 18000]
4. SSRs are present in both coding and noncoding regions of the genome. [Option ID = 18001]
Correct Answer :
They are analyzed using primers complementary to their hyper variable flanking regions. [Option ID = 17999]
27) Which one of the following statements is INCORRECT about pseudogenes?
[Question ID = 4502]
1. They are derived from mRNA sequences by reverse transcription. [Option ID = 18002]
2. They arise due to accumulation of mutations in functional genes. [Option ID = 18003]
3. They appear as intronless versions of another existing gene. [Option ID = 18004]
4. They possess poly A tract at the 3' end. [Option ID = 18005]
Correct Answer :
They arise due to accumulation of mutations in functional genes. [Option ID = 18003]
28) Which one of the following is a monotypic family?
[Question ID = 4503]
1. Nymphaeaceae [Option ID = 18006]
2. Aristolochiaceae [Option ID = 18007]
3. Amborellaceae [Option ID = 18008]
4. Winteraceae [Option ID = 18009]
Correct Answer :
Amborellaceae [Option ID = 18008]
29) `Jaculators' are a characteristic feature of
[Question ID = 4504]
1. Apocynaceae [Option ID = 18010]
2. Acanthaceae [Option ID = 18011]
3. Asteraceae [Option ID = 18012]
4. Myrtaceae [Option ID = 18013]
Correct Answer :
Acanthaceae [Option ID = 18011]
30) Stigmatic exudate produced on wet stigma is NOT responsible for
[Question ID = 4505]
1. pollenpistil interaction [Option ID = 18014]
2. excessive evaporation and wetting [Option ID = 18015]
3. protection against pathogens and insects [Option ID = 18016]
4. the formation of pellicle components [Option ID = 18017]
Correct Answer :
the formation of pellicle components [Option ID = 18017]
31) Which one of the following events is accompanied by pollen tube entry inside the synergid cell?
[Question ID = 4506]
1. Degeneration of one of the synergids [Option ID = 18018]
2. Disruption of plasma membrane [Option ID = 18019]
3. Impaired DnaJ chaperonin expression in mitochondria [Option ID = 18020]
4. Accumulation of Ca in the synergid
++
[Option ID = 18021]
Correct Answer :
Impaired DnaJ chaperonin expression in mitochondria [Option ID = 18020]
32) Polar distribution of Ca++ in the pollen tube tip can be disrupted by
[Question ID = 4507]
1. Fluphenazine [Option ID = 18022]
2. Gadolinium [Option ID = 18023]
3. FURA 2 [Option ID = 18024]
4. Quin 2 [Option ID = 18025]
Correct Answer :
Gadolinium [Option ID = 18023]
33) Match the name of genes mentioned in Column I with their source in Column II:
Column I
Column II
A. gfp
I. Bacillus thuringiensis
B. bar
II. Escherichia coli
C. gus
III. Streptomyces hygroscopicus
D. btgene
IV. Aequorea victoria
Choose the correct answer from the options given below:
[Question ID = 4508]
1. A III, B IV, C II, D I
[Option ID = 18026]
2. A II, B III, C IV, D I
[Option ID = 18027]
3. A IV, B III, C II, D I
[Option ID = 18028]
4. A IV, B I, C II, D III
[Option ID = 18029]
Correct Answer :
A II, B III, C IV, D I
[Option ID = 18027]
34) Select the appropriate group of markers that can be used for evaluating the genetic fidelity of plants?
[Question ID = 4509]
1. SCoT, RAPD, ISSR [Option ID = 18030]
2. RFLP, HPLC, SS [Option ID = 18031]
3. SCoT, SRAP, HPTLC [Option ID = 18032]
4. SSR, RAPD, TLC [Option ID = 18033]
Correct Answer :
SCoT, RAPD, ISSR [Option ID = 18030]
35) Which one of the following enzymatic antioxidants is localized in the endoplasmic reticulum?
[Question ID = 4510]
1. Superoxide dismutase [Option ID = 18034]
2. Catalase [Option ID = 18035]
3. Guaiacol peroxidase [Option ID = 18036]
4. Glutathione reductase [Option ID = 18037]
Correct Answer :
Guaiacol peroxidase [Option ID = 18036]
36) Which one of the following is NOT required for natural selection?
[Question ID = 4511]
1. Genetic Drift [Option ID = 18038]
2. Differential survival and reproduction [Option ID = 18039]
3. Heritability of trait under selection [Option ID = 18040]
4. Variation [Option ID = 18041]
Correct Answer :
Genetic Drift [Option ID = 18038]
37) Which of the following is the correct order of geologic time intervals from the most ancient to the most recent?
[Question ID = 4512]
1. Paleozoic, Cenozoic, Mesozoic [Option ID = 18042]
2. Hadean, Archaen, Proterozoic [Option ID = 18043]
3. Silurian, Ordovician, Cambrian [Option ID = 18044]
4. Silurian, Carboniferous, Devonian [Option ID = 18045]
Correct Answer :
Hadean, Archaen, Proterozoic [Option ID = 18043]
38) Which one of the following statements is NOT true for Maturation Promoting Factor (MPF)?
[Question ID = 4513]
1. MPF activity drives somatic cells into mitosis. [Option ID = 18046]
2. MPF activity dephosphorylates condensin and nucleoporin. [Option ID = 18047]
3. MPF activity drives oocytes into meiosis. [Option ID = 18048]
4. MPF is a heterodimer containing CDK1 and cyclin B. [Option ID = 18049]
Correct Answer :
MPF activity dephosphorylates condensin and nucleoporin. [Option ID = 18047]
39) During expansion of a cell, which of the following bonds in cell walls are affected by expansin proteins?
[Question ID = 4514]
1. Covalent bonds [Option ID = 18050]
2. Electrovalent bonds [Option ID = 18051]
3. Hydrogen bonds [Option ID = 18052]
4. van der Waals forces [Option ID = 18053]
Correct Answer :
Hydrogen bonds [Option ID = 18052]
40) The technique, Fluorescence (F?rster) Resonance Energy Transfer (FRET), is used to study
[Question ID = 4515]
1. lateral mobility of lipids/proteins within membranes. [Option ID = 18054]
2. existence of lipid rafts within membranes. [Option ID = 18055]
3. presence of supramolecular complexes within membranes. [Option ID = 18056]
4. domain structure of lipids within membranes. [Option ID = 18057]
Correct Answer :
presence of supramolecular complexes within membranes. [Option ID = 18056]
41) What is the approximate length of linker DNA present between two nucleosomes, if it has (i) 20 base pairs or (ii) 60
base pairs?
[Question ID = 4516]
1. (i) 68 ? or (ii) 204 ? [Option ID = 18058]
2. (i) 68 nm or (ii) 204 nm [Option ID = 18059]
3. (i) 6.8 ? or (ii) 20.4 ? [Option ID = 18060]
4. (i) 6.8 m or (ii) 20.4 m [Option ID = 18061]
Correct Answer :
(i) 68 ? or (ii) 204 ? [Option ID = 18058]
42) Golgi stain, advent and use of which resulted in universal acceptance of Cell theory, makes use of
[Question ID = 4517]
1. Copper [Option ID = 18062]
2. Gold [Option ID = 18063]
3. Silver [Option ID = 18064]
4. Iron [Option ID = 18065]
Correct Answer :
Silver [Option ID = 18064]
43) Mutations in genes encoding Ecadherins in Pectinophora gossypiella led to resistance against Bt cotton Bollgard 1
producing the endotoxin
[Question ID = 4518]
1. Cry 1Ac
[Option ID = 18066]
2. Cry 1Ab
[Option ID = 18067]
3. Cry 2Ac
[Option ID = 18068]
4. Cry 2Ab
[Option ID = 18069]
Correct Answer :
Cry 1Ac
[Option ID = 18066]
44) Which one of the following techniques is NOT a part of Integrated Pest Management?
[Question ID = 4519]
1. Pheromone mediated mating disruption [Option ID = 18070]
2. "Push and Pull" strategy [Option ID = 18071]
3. Biological control [Option ID = 18072]
4. Sterile Insect Production [Option ID = 18073]
Correct Answer :
Sterile Insect Production [Option ID = 18073]
45) The association of Crotalaria sativa?Utethesia ornatrixNephila clavipes is a representation of
[Question ID = 4520]
1. insects feeding on a legume
[Option ID = 18074]
2. vectors of viral diseases of a legume crop
[Option ID = 18075]
3. host plantpestpredator interaction
[Option ID = 18076]
4. host plantinsectpredator interaction
[Option ID = 18077]
Correct Answer :
host plantinsectpredator interaction
[Option ID = 18077]
46) The Crelox recombination system is a characteristic feature of
[Question ID = 4521]
1. Sulfolobus islandicus rodshaped virus 1
[Option ID = 18078]
2. Escherichia virus P1
[Option ID = 18079]
3. Cryphonectria hypovirus 1
[Option ID = 18080]
4. Acanthamoeba polyphaga mimivirus
[Option ID = 18081]
Correct Answer :
Escherichia virus P1
[Option ID = 18079]
47) Which singlestranded DNA virus associated with epidemics of tomato leaf curl disease is documented as a natural
recombinant molecule?
[Question ID = 4522]
1. Tomato yellow leaf curl virusIsrael [Option ID = 18082]
2. Tomato leaf curl Sardinia virus [Option ID = 18083]
3. Tomato leaf curl New Delhi virus [Option ID = 18084]
4. Tomato leaf curl Malaga virus [Option ID = 18085]
Correct Answer :
Tomato leaf curl Malaga virus [Option ID = 18085]
48) Resistance being inherited as an autosomal recessive trait, the development of crossresistance in targeted cotton pests
to Bt delta endotoxins incorporated into artificial diets can best be evaluated from estimates of
[Question ID = 4523]
1. LC
01 [Option ID = 18086]
2. LC
50 [Option ID = 18087]
3. LC
90 [Option ID = 18088]
4. LC
100 [Option ID = 18089]
Correct Answer :
LC
50 [Option ID = 18087]
49) Which of the following alga is a commercial source of carotene?
[Question ID = 4524]
1. Oscillatoria sp.
[Option ID = 18090]
2. Monodopsis subterranean
[Option ID = 18091]
3. Dunaliella salina
[Option ID = 18092]
4. Scenedesmus obliqus
[Option ID = 18093]
Correct Answer :
Dunaliella salina
[Option ID = 18092]
50) The phenomenon of "red snow" is exhibited in polar regions by which of the Chlamydomonas species?
[Question ID = 4525]
1. C. nivalis
[Option ID = 18094]
2. C. coccifera
[Option ID = 18095]
3. C. media
[Option ID = 18096]
4. C. reticulata
[Option ID = 18097]
Correct Answer :
C. nivalis
[Option ID = 18094]
This post was last modified on 27 December 2020