MCQOPTIONS
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MCQOPTIONS
This section includes 151 Mcqs, each offering curated multiple-choice questions to sharpen your Biotechnology knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Which of the following constituent/(s) is/are added to help in speedy generation of meristem culture in case of Ipomoea batatas improvement? |
| A. | Auxins |
| B. | Cytokinins |
| C. | Both (a) and (b) |
| D. | Adenine |
| Answer» D. Adenine | |
| 52. |
α and β cyclo dextrins are used for |
| A. | pharmaceutical delivery system |
| B. | flavour and odour enhancement in foods |
| C. | removal of undesired compounds like caffeine from foods |
| D. | all of the above |
| Answer» E. | |
| 53. |
cDNA clone prepared to stigma mRNA of Brassica oleracea can be used as a probe on DNA digests of segregating populations to recognize |
| A. | Aegilops |
| B. | Triticum |
| C. | Both (a) and (b) |
| D. | S alleles |
| Answer» E. | |
| 54. |
Virulence trait of Agrobacterium tumefaciens is borne on |
| A. | chromosomal DNA |
| B. | tumour inducing plasmid DNA |
| C. | both chromosomal and plasmid DNA |
| D. | cryptic plasmid DNA |
| Answer» C. both chromosomal and plasmid DNA | |
| 55. |
Somaclonal variation method refers to |
| A. | heritable changes |
| B. | genetic isolation |
| C. | small number of species having limited commercial potential |
| D. | large number of plant cells |
| Answer» B. genetic isolation | |
| 56. |
On Ti-plasmid T-region or T-DNA is flanked by a direct repeat of |
| A. | 12 bp |
| B. | 20 bp |
| C. | 25 bp |
| D. | 30 bp |
| Answer» D. 30 bp | |
| 57. |
Which of the following is the class of hybridization? |
| A. | Intervarietal |
| B. | Interspecific |
| C. | Intergeneric |
| D. | all of these |
| Answer» E. | |
| 58. |
Which of the following is not a characteristic of a transgenic crop? |
| A. | herbicide resistance |
| B. | Bt insect resistance toxin |
| C. | increased methionine content |
| D. | none of these |
| Answer» E. | |
| 59. |
Antisense technology |
| A. | selectively blocks expression of a gene |
| B. | combines genetic material from different species |
| C. | combines organelles and cells |
| D. | alters or transfers cells |
| Answer» B. combines genetic material from different species | |
| 60. |
Cultivated tomato species (Lycopersicon esculentum) has a high degree of resistance towards |
| A. | Meloidogyne spp.nematodes |
| B. | L. peruviaanum |
| C. | both (a) and (b) |
| D. | Solarium melongena |
| Answer» C. both (a) and (b) | |
| 61. |
Advantage of microprojectile method over microinjection method for gene transfer in plants include |
| A. | intact cells are used |
| B. | method is universal in its application irrespective of all shape, size, type and presence or absence of cell wall |
| C. | gene can be transferred to many cells simultaneously |
| D. | all of the above |
| Answer» E. | |
| 62. |
Resistance to L-phosphinothrium in tobacco plants is developed by the transfer of |
| A. | gene for EPSPS (5-enol-pyruvyl shikimat 3 phosphate synthase) |
| B. | gene for ALS (acetolactate synthase) |
| C. | gene for GS (glutamine synthase) |
| D. | any of the above |
| Answer» D. any of the above | |
| 63. |
Avermectins (AVM) are macrocyclic lactones which have potent antihelminthic and insecticidal action. They are generally derived from the mycelia of |
| A. | Streptomyces avermitilis |
| B. | B. thrunigiensis |
| C. | P. flourescens |
| D. | L. peruvianum |
| Answer» B. B. thrunigiensis | |
| 64. |
Metabolic interference is a term used to describe a method to metabolize a compound and prevent the synthesis of something that is normally produced. What compound(s) have been targeted for metabolic interference in tomato? |
| A. | ACC (1-aminocyclopropane-1-carboxylic acid) |
| B. | SAM (S-adenosylmethionine) |
| C. | Both (a) and (b) |
| D. | AOA (aminooxyacetic acid) |
| Answer» D. AOA (aminooxyacetic acid) | |
| 65. |
Plants containing genes encoding cytokines and blood clotting factors are used in |
| A. | nutrition improvement |
| B. | pharmaceutical production |
| C. | vaccine production |
| D. | textile production |
| Answer» C. vaccine production | |
| 66. |
Transgenic plants |
| A. | contain foreign genes in their cells |
| B. | are used to produce human antibodies |
| C. | both (a) and (b) |
| D. | are plants that differ in geographical locations |
| Answer» D. are plants that differ in geographical locations | |
| 67. |
Which of the following statements is true regarding genomics? |
| A. | Plant genomics lags behind similar efforts in animals and microorganisms |
| B. | Researchers can make use of genomic information even if the entire genome of an organism is not known |
| C. | Researchers are busy in trying to determine the genome of the potato plant |
| D. | All of the above |
| Answer» E. | |
| 68. |
Low temperatures induce the expression of many cold-induced genes. Transgenic plants with improved cold tolerance have been produced by |
| A. | expressing the protein that activates expression of these genes all the time in plants |
| B. | cooling plants using the Peltier effect |
| C. | expressing a gene for production of antifreeze (ethylene glycol) in plants |
| D. | increasing evaporative cooling from leaf surfaces |
| Answer» B. cooling plants using the Peltier effect | |
| 69. |
Which of the following self-pollinating plant/(s) tend to be homozygous? |
| A. | Peas |
| B. | Tomato |
| C. | Peach |
| D. | All of these |
| Answer» E. | |
| 70. |
Cytoplast (somatic cell hybridization) is the process in which |
| A. | two protoplast along with their nuclei fuse |
| B. | a normal protoplast along with an enucleated protoplast fuse |
| C. | both (a) and (b) |
| D. | two enucleated protoplasts fuse |
| Answer» D. two enucleated protoplasts fuse | |
| 71. |
The roots of a plant are converted into drug-producing structures in a process called |
| A. | microcosm establishment |
| B. | mibridization |
| C. | bioremediation |
| D. | rhizosecretion |
| Answer» E. | |
| 72. |
Involvement of sugarcane phytoalexins in red-hot resistance has been observed. The phytoalexin compound is reported to be |
| A. | 3-deoxyanthocyanidin |
| B. | luteolinidin |
| C. | apigeninidin |
| D. | 5-0 apigeninidin |
| Answer» B. luteolinidin | |
| 73. |
Agrobacterium tumefaciens is a |
| A. | gram (+) bacteria |
| B. | gram (-) bacteria |
| C. | a fungi |
| D. | a yeast |
| Answer» C. a fungi | |
| 74. |
Cultivated tomato species (Lycopersicon esculentum) is highly susceptible to |
| A. | Meloidogyne spp. nematodes |
| B. | L. peruviaanum |
| C. | both (a) and (b) |
| D. | Solarium melongena |
| Answer» B. L. peruviaanum | |
| 75. |
In transgenic plants of Arabidipsis thaliana which of the following gene is transferred for the synthesis of PHB (polyhdroxybutyrate)? |
| A. | Acetyl Co A reductase |
| B. | Polyhydroxybutyrate synthease |
| C. | Both (a) and (b) |
| D. | Pyrophosphorylase |
| Answer» D. Pyrophosphorylase | |
| 76. |
Which of the agricultural challenges below cannot be solved with transgenic techniques? |
| A. | Crops are damaged by frost |
| B. | Crops are killed by a virus |
| C. | Public concern about safety of synthetic pesticides |
| D. | Public preference for organic vegetables |
| Answer» E. | |
| 77. |
Which technique is used to introduce genes into dicots? |
| A. | electroporation |
| B. | particle acceleration |
| C. | microinjection |
| D. | Ti plasmid infection |
| Answer» E. | |
| 78. |
The homologous chromosomes follow the process of synopsis in the |
| A. | leptotene |
| B. | zygotene |
| C. | pachytene |
| D. | diplotene |
| Answer» C. pachytene | |
| 79. |
Meristem culture of banana enables |
| A. | rapid multiplication |
| B. | elimination of bunch top virus disease |
| C. | both (a) and (b) |
| D. | slow growth |
| Answer» D. slow growth | |
| 80. |
α and β cyclo dextrins are produced by |
| A. | transgenic tomato |
| B. | transgenic maize |
| C. | transgenic potato |
| D. | transgenic wheat |
| Answer» D. transgenic wheat | |
| 81. |
The controversy regarding the use of Bt corn is that it |
| A. | is potentially harmful to monarch butterflies |
| B. | is a potential allergen to humans |
| C. | both (a) and (b) |
| D. | can contaminate groundwater |
| Answer» D. can contaminate groundwater | |
| 82. |
Transplastomics |
| A. | targets genes in the chloroplast |
| B. | provides exceptionally low yields of protein products |
| C. | produces genes that are released in pollen |
| D. | offers little opportunity for practical use |
| Answer» B. provides exceptionally low yields of protein products | |
| 83. |
Transgenic plants with increased tolerance to aluminum have been produced by making plants that |
| A. | secrete phytosiderophores into the soil |
| B. | make more metal-binding peptides like phytochelatins |
| C. | bind aluminum to the cell wall |
| D. | secrete citrate into the soil |
| Answer» E. | |
| 84. |
In case of incomplete dominance, the phenotypic ratio of a monohybrid cross will be |
| A. | 1:2:1 |
| B. | 3:1:1 |
| C. | 1:3:1 |
| D. | 1:1:2 |
| Answer» B. 3:1:1 | |
| 85. |
The first field tests were conducted with which of the following genetically altered organism? |
| A. | bt Corn |
| B. | Vaccinia virus containing a gene from the rabies virus |
| C. | The flavrsavr tomato |
| D. | Strawberry seedlings sprayed with ice-minus bacteria |
| Answer» E. | |
| 86. |
Somatic embryoids are |
| A. | identical with zygotic embryos and without seed coats |
| B. | identical with zygotic embryos and with seed coats |
| C. | non-identical with zygotic embryos and without seed coats |
| D. | non-identical with zygotic embryos and with seed coats |
| Answer» B. identical with zygotic embryos and with seed coats | |
| 87. |
In transgenic plants that have been manipulated to express patho-genesis-related (PR) proteins all the time it has been shown that |
| A. | these provide no protection at all against pathogens |
| B. | expression of one PR protein provides high levels of protection against many pathogens |
| C. | expression of two PR proteins provides some protection against a few pathogens |
| D. | these proteins trigger the production of other antimicrobial defenses |
| Answer» E. | |
| 88. |
Protoplast fusion technique generally involves |
| A. | isolation only |
| B. | isolation and fusion |
| C. | isolation, fusion and culturing |
| D. | hybridization between two species |
| Answer» D. hybridization between two species | |
| 89. |
Establishment of embryogenic cell suspensions with high regeneration potential is a pre-requisite for successful |
| A. | protoplast culture |
| B. | detection of nucleic acid sequence |
| C. | restriction of fragment length polymorphisms |
| D. | microinjection |
| Answer» B. detection of nucleic acid sequence | |
| 90. |
Resistance to sulphonyl urea compounds in transgenic tobacco plant has been developed by the transfer of |
| A. | gene for EPSPS (5-enol-pyruvyl shikimat 3 phosphate synthase) |
| B. | gene for ALS (acetolactate synthase) |
| C. | gene for GS (glutamine synthase) |
| D. | any of the above |
| Answer» C. gene for GS (glutamine synthase) | |
| 91. |
Which cell-based technology endows a cell with increased ability to harness energy? |
| A. | Chlybridization |
| B. | Cybridization |
| C. | Mibridization |
| D. | Protoplast fusion |
| Answer» B. Cybridization | |
| 92. |
Which of the following transposable elements are not found in plants? |
| A. | Ac |
| B. | Tam3 |
| C. | L1 |
| D. | All are found |
| Answer» D. All are found | |
| 93. |
In the meiotic cell divison in daughter cells are produced by two successive division in which |
| A. | first division is equational, second is reductional |
| B. | first division is reductional and second is equational |
| C. | both divisions are reductional |
| D. | both divisions are equational |
| Answer» B. first division is reductional and second is equational | |
| 94. |
In a __________ protocol, bacteria with engineered abilities to detoxify pollutants are intentionally released in an area. |
| A. | microcosm establishment |
| B. | mibridization |
| C. | bioremediation |
| D. | rhizosecretion |
| Answer» D. rhizosecretion | |
| 95. |
If the goal were to create a plant resistant to an insecticide, which cell-based plant technology would be most effective? |
| A. | Clonal propagation |
| B. | Cybridization |
| C. | Protoplast fusion |
| D. | Mutant selection |
| Answer» E. | |
| 96. |
Which of the following has been widely used to provide resistance against plant viruses? |
| A. | Virus resistance genes from bacteria |
| B. | Expression of virus coat protein genes in transgenic plants |
| C. | Expression of anti-virus genes in vectors that transmit viruses |
| D. | Expression of ribonuclease (RNase) genes in host plants |
| Answer» C. Expression of anti-virus genes in vectors that transmit viruses | |
| 97. |
Which tropical fruit crop has been successfully engineered to be protected against a lethal virus? |
| A. | Passion fruit |
| B. | Papaya |
| C. | Mango |
| D. | Lychee |
| Answer» C. Mango | |
| 98. |
Which of the following dies from Ti plasmid infection? |
| A. | Rice |
| B. | Corn |
| C. | Sorghum |
| D. | All of these |
| Answer» E. | |
| 99. |
For developing herbicide resistance in transgenic plants which of the following approach/(es) is/are used? |
| A. | Target molecule is made insensitive to herbicide |
| B. | Target protein is overproduced |
| C. | A pathway should be introduced that detoxify the herbicide |
| D. | All of the above |
| Answer» E. | |
| 100. |
The production of high quality and uniform embryos has been limited to only |
| A. | carrot |
| B. | alfalfa |
| C. | both (a) and (b) |
| D. | sandalwood |
| Answer» D. sandalwood | |