Download DUET Master 2018 DU MPhil PhD in Botany Question Paper With Answer Key

Download DUET (Delhi University Entrance Test conducted by the NTA) 2018 DU MPhil PhD in Botany Question Paper With Solution Key

This post was last modified on 29 January 2020

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DUET Last 10 Years 2011-2021 Question Papers With Answer Key || Delhi University Entrance Test conducted by the NTA

DU MPhil PhD in Botany

Topic:- DU_J18_MPHIL_BOT

Which of the following statements is not true for nzz (NOZZLE gene mutant) of Arabidopsis? [Question ID = 2001]
1. Plays an important role in placenta and ovule primordial differentiation [Option ID = 8003]
2. Funiculus appears longer than the wild type ovules [Option ID = 8001]
3. Precocious establishment of adaxial-abaxial polarity of ovule [Option ID = 8004]
4. Integuments do not show asymmetrical growth [Option ID = 8002]
Correct Answer :-

Plays an important role in placenta and ovule primordial differentiation [Option ID = 8003]
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Which of the following plant defense response is not a characteristic of chewing herbivores? [Question ID = 1986]
1. Increase in the production of volatile organic compounds like linalool and nerilidol. [Option ID = 7944]
2. Increase in levels of amino-acid conjugated jasmonates. [Option ID = 7942]
3. Increase in levels of amino acid-conjugated salicylates. [Option ID = 7943]
4. Increase in the number of plant trichomes. [Option ID = 7941]
Correct Answer :-

Increase in levels of amino acid-conjugated salicylates. [Option ID = 7943]
Which of the following molecule in not a HAMP? [Question ID = 1987]
1. Linalool [Option ID = 7946]
2. Volicitin [Option ID = 7947]
3. Inceptin [Option ID = 7945]
4. Benzyl cyanide [Option ID = 7948]
Correct Answer :-

Linalool [Option ID = 7946]

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Which statement about a transition state analog in an enzymatic reaction is false? [Question ID = 1969]
1. It may function as a non-competitive inhibitor of the enzyme. [Option ID = 7876]
2. It fits better into the active site than the substrate. [Option ID = 7874]
3. It usually is a strong inhibitor of the enzyme. [Option ID = 7873]
4. It is a stable molecule and has a structure similar to the presumed transition state. [Option ID = 7875]
Correct Answer :-
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It may function as a non-competitive inhibitor of the enzyme. [Option ID = 7876]
Which one of the following statements is incorrect for tetrasporic embryo sac formation? [Question ID = 1976]
1. Triploid nucleus is formed by the fusion of three nuclei at chalazal end while, one nucleus remains haploid at the micropylar end. [Option ID = 7903]
2. Meiosis results in a linear tetrad of megaspores of which either chalazal or micropylar megaspore participates in the embryo sac formation. [Option ID = 7902]
3. Coenomegaspore consists of four haploid nuclei with a common cytoplasm. [Option ID = 7904]
4. Four nuclei of coenomegaspore are arranged in a 1+2+1 manner. [Option ID = 7901]
Which one of the following statements is false? [Question ID = 1989]
1. Centromeric regions have suppressed recombination. [Option ID = 7955]
2. Genetic and physical maps are collinear. [Option ID = 7953]
3. Genetic distances are equal to the actual physical distances between genes. [Option ID = 7956]
4. Some regions on the chromosome are more prone to crossing over than others. [Option ID = 7954]
Correct Answer :-

Genetic distances are equal to the actual physical distances between genes. [Option ID = 7956]
Which one of the following combinations of techniques can be used for analyzing expression levels of a transgene?
1. Southern blotting and Northern blotting
2. Northern blotting and Western blotting
3. ELISA and qRT-PCR
4. FISH and SSR
[Question ID = 1984]
1. i and iv only [Option ID = 7935]
2. i and iii only [Option ID = 7936]
3. ii and iii only [Option ID = 7934]
4. ii and iv only [Option ID = 7933]
Correct Answer :-

ii and iii only [Option ID = 7934]

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Which one of the following is not an example of Pathogen Associated Molecular Patterns (PAMP)? [Question ID = 1985]
1. Bacterial flagellin (flg22) [Option ID = 7937]
2. Peptidoglycan (PGN) [Option ID = 7940]
3. Elongation factor Tu (EF-Tu) [Option ID = 7938]
4. Toll-like receptor (TLR) [Option ID = 7939]
Correct Answer :-
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Toll-like receptor (TLR) [Option ID = 7939]
Which one of the following is incorrect for CLAVATA3 gene? [Question ID = 1975]
1. Its role is antagonistic to that of WUSCHEL gene. [Option ID = 7899]
2. CLAVATA3 gene encodes a small protein expressed in the central zone of SAM. [Option ID = 7898]
3. It is involved in maintenance of the root apical meristem. [Option ID = 7900]
4. Mutation in CLAVATA3 results in club shaped siliques in Arabidopsis thaliana. [Option ID = 7897]
Correct Answer :-

It is involved in maintenance of the root apical meristem. [Option ID = 7900]
Which amino acid motifs present in the Release Factor 1 (RF1) are involved in translation, termination and peptide release from the large subunit of ribosomes in eukaryotes? [Question ID = 1962]
1. PVT motif and GGQ motif [Option ID = 7848]
2. QQG motif and PLR motif [Option ID = 7847]
3. PQR motif and PCR motif [Option ID = 7846]
4. MVL motif and GNG motif [Option ID = 7845]
Correct Answer :-

PVT motif and GGQ motif [Option ID = 7848]
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Ingested plant virions evade host immune responses in white flies by associating with [Question ID = 2002]
1. phagosomes that trigger self-recognition pathways and suppress sumoylation. [Option ID = 8008]
2. chaperones produced by gut symbionts. [Option ID = 8005]
3. protease inhibitors that inactivate gut digestive enzymes. [Option ID = 8006]
4. short interfering RNA (siRNA) molecules complementary to regions of the viral genome. [Option ID = 8007]
Correct Answer :-

chaperones produced by gut symbionts. [Option ID = 8005]
Highage-specific survivorship probability in pre-reproductive and reproductive stages of an organism's life have characteristic features of which one of the following survivorship curves: [Question ID = 1996]
1. Type II [Option ID = 7982]
2. Type III [Option ID = 7983]
3. Type II & III [Option ID = 7984]
4. Type I [Option ID = 7981]
Correct Answer :-

Type I [Option ID = 7981]

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Identify the correct source of bar gene: [Question ID = 2000]
1. Bacillus thuringiensis [Option ID = 7999]
2. E. coli [Option ID = 8000]
3. Streptomyces hygroscopicus [Option ID = 7998]
4. Saccharomyces cerevisiae [Option ID = 7997]
Correct Answer :-
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Streptomyces hygroscopicus [Option ID = 7998]
Identify the plant species from which, artemisinin, an anti-malarial drug, is extracted. [Question ID = 1982]
1. Rumex hastatus [Option ID = 7926]
2. Artemisia maritima [Option ID = 7925]
3. Artemisia annua [Option ID = 7927]
4. Cinchona officinalis [Option ID = 7928]
Correct Answer :-

Artemisia annua [Option ID = 7927]
Evacuation of the column of a transmission electron microscope to 10^-4 Torr does not affect [Question ID = 1988]
1. focal length of the objective lens. [Option ID = 7950]
2. life of the emitter. [Option ID = 7951]
3. breakdown of gases within the column. [Option ID = 7952]
4. mean free path of electron. [Option ID = 7949]
Correct Answer :-

focal length of the objective lens. [Option ID = 7950]
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Nerium oleander is acclimated to high temperature due to [Question ID = 1967]
1. excessive accumulation of fatty acids. [Option ID = 7868]
2. excessive fluidity of membrane lipids. [Option ID = 7867]
3. greater degree of unsaturation of fatty acids in membrane lipids. [Option ID = 7866]
4. greater degree of saturation of fatty acids in membrane lipids. [Option ID = 7865]
Under the given conditions, which one of the polypeptides listed below will fold into a-helix at pH 7.0? [Question ID = 1968]
1. Polyaspartic acid [Option ID = 7870]
2. Polyalanine [Option ID = 7869]
3. Polyproline [Option ID = 7871]
4. Polylysine [Option ID = 7872]
Correct Answer :-

Polyalanine [Option ID = 7869]
Gynoecium in family Asteraceae is [Question ID = 2009]
1. monocarpellary, unilocular having many ovules on marginal placentation. [Option ID = 8035]
2. bicarpellary, syncarpous, unilocular having single ovule on basal placentation. [Option ID = 8033]
3. bicarpellary, syncarpous, bilocular having two ovules on axile placentation. [Option ID = 8036]
4. bicarpellary, syncarpous, bilocular having many ovules on axile placentation. [Option ID = 8034]
Correct Answer :-

bicarpellary, syncarpous, unilocular having single ovule on basal placentation. [Option ID = 8033]

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In Oenothera parviflora, permanent translocation heterozgosity is observed. Which of the following sentences is not true about O. parviflora? [Question ID = 1964]
1. A ring of 14 chromosomes is formed at meiosis. [Option ID = 7853]
2. Only heterozygotes survive. [Option ID = 7854]
3. Only homozygotes survive. [Option ID = 7855]
4. Heterozygosity is maintained due to balanced lethal system. [Option ID = 7856]
Correct Answer :-
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Only homozygotes survive. [Option ID = 7855]
Addition of which factor/s converts bacterial core RNA polymerase into a holozyme that can initiate transcription only at promoters? [Question ID = 1961]
1. ß-70 and 0-30 [Option ID = 7843]
2. a-70 [Option ID = 7844]
3. TFIIB [Option ID = 7841]
4. s-70 [Option ID = 7842]
Correct Answer :-

s-70 [Option ID = 7842]
Endohydric mosses refers to those which [Question ID = 2006]
1. lack the perstome spore dispersal occur only on decay of the sporophyte. [Option ID = 8024]
2. conduct water and minerals through the specialized conducting cells. [Option ID = 8022]
3. absorb water and minerals through whole surface of the plant. [Option ID = 8021]
4. have the erect growth form. [Option ID = 8023]
Correct Answer :-

conduct water and minerals through the specialized conducting cells. [Option ID = 8022]
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In the lactose operon, the lac operator (laco) was established to be cis-acting because [Question ID = 1965]
1. laco is physically linked to the operon. [Option ID = 7859]
2. a single functional laco copy can regulate two copies of the lac operon in a merozygote. [Option ID = 7857]
3. a single functional laco cannot regulate two copies of the lac operon in a merozygote. [Option ID = 7860]
4. mutations in laco affects lactose uptake. [Option ID = 7858]
Correct Answer :-

a single functional laco cannot regulate two copies of the lac operon in a merozygote. [Option ID = 7860]
During photosynthesis, oxidation of water in chloroplasts occurs in/on [Question ID = 1990]
1. outer membrane [Option ID = 7960]
2. thylakoidal membranes [Option ID = 7958]
3. stroma [Option ID = 7959]
4. intra-thylakoidal space [Option ID = 7957]
Correct Answer :-

intra-thylakoidal space [Option ID = 7957]

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Species of which of the following genus is a good source of glycerol and ß-carotene? [Question ID = 1973]
1. Chondrus [Option ID = 7891]
2. Eucheuma [Option ID = 7892]
3. Dunaliella [Option ID = 7890]
4. Spirulina [Option ID = 7889]
Correct Answer :-
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Dunaliella [Option ID = 7890]
Agar-agar is not obtained from [Question ID = 1995]
1. Gracilaria [Option ID = 7978]
2. Fucus [Option ID = 7980]
3. Gigartina [Option ID = 7979]
4. Gelidium [Option ID = 7977]
Correct Answer :-

Fucus [Option ID = 7980]
Homeodomain, present in the DNA binding proteins, contains ________ motifs. [Question ID = 1966]
1. Leucine zipper [Option ID = 7864]
2. Zinc finger [Option ID = 7863]
3. Helix-loop-helix [Option ID = 7861]
4. Helix-turn-helix [Option ID = 7862]
Correct Answer :-

Helix-turn-helix [Option ID = 7862]
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A study finds that stray cats have whiskers about 10 cm long. After about 20 generations of stabilizing selection, what do you expect to see? [Question ID = 1980]
1. Even more cats will have whiskers 10 cm long. [Option ID = 7919]
2. Most cats will have whiskers greater than 20 cm long. [Option ID = 7917]
3. Most cats will have whiskers less than 10 cm long. [Option ID = 7920]
4. Most cats will have whiskers either less than 10 cm or greater than 20 cm long. [Option ID = 7918]
Correct Answer :-

Even more cats will have whiskers 10 cm long. [Option ID = 7919]
White rot basidiomycetous fungi are good source of [Question ID = 1999]
1. lignase. [Option ID = 7995]
2. amylase. [Option ID = 7993]
3. protease. [Option ID = 7994]
4. lipase. [Option ID = 7996]
Correct Answer :-

lignase. [Option ID = 7995]

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There are three substances A, B, and C. Given below are the pattern of immunological responses in rabbits when (i) A is administered along with C, (ii) B is administered along with C, and (iii) A is conjugated with B and administered along with C.

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This post was last modified on 29 January 2020

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Download DUET Master 2018 DU MPhil PhD in Botany Question Paper With Answer Key

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