Explore topic-wise MCQs in Biotechnology.

This section includes 39 Mcqs, each offering curated multiple-choice questions to sharpen your Biotechnology knowledge and support exam preparation. Choose a topic below to get started.

1.

In transgenic plants of 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
2.

Cultivated tomato species () is highly susceptible to

A. both (a) and (b)
Answer» B.
3.

cDNA clone prepared to stigma mRNA of 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.
4.

Wheat variety Rendezvous, with resistance to eye spot () derived from , has a chloroplast genome derived from

A. Aegilops
B. Triticum
C. Both (a) and (b)
D. S alleles
Answer» B. Triticum
5.

Which of the following govern sporophytic self-incompatibility in ?

A. Aegilops
B. Triticum
C. Both (a) and (b)
D. S alleles
Answer» E.
6.

Cultivated tomato species () has a high degree of resistance towards

A. both (a) and (b)
Answer» C.
7.

Which of the following constituent/(s) is/are added to help in speedy generation of meristem culture in case of improvement?

A. Auxins
B. Cytokinins
C. Both (a) and (b)
D. Adenine
Answer» D. Adenine
8.

Which of the following mutant/(s) has/have increased amount of lysine and/or methionine in corn seeds?

A. Opaque-2
B. Sugary-1
C. Flory-2
D. All of these
Answer» E.
9.

When the transposon jumps into an otherwise functional gene, it has the effect of

A. blocking correct transcription
B. initiating correct transcription
C. propagating correct transcription
D. initiating some genetic codes
Answer» B. initiating correct transcription
10.

Cultivated tomato species (Lycopersicon esculentum) has a high degree of resistance towards

A. <i>Meloidogyne spp.nematodes</i>
B. <i>L. peruviaanum</i>
C. both (a) and (b)
D. <i>Solarium melongena</i>
Answer» C. both (a) and (b)
11.

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
12.

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.
13.

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
14.

Which of the following is the class of hybridization?

A. Intervarietal
B. Interspecific
C. Intergeneric
D. all of these
Answer» E.
15.

For increased level of mannitol in transgenic tobacco plants which of the following gene is transferred?

A. Mannitol dehydrogenase
B. Mannitol synthease
C. Both (a) and (b)
D. Mannitol pyrophosphorylase
Answer» B. Mannitol synthease
16.

Cultivated tomato species (Lycopersicon esculentum) is highly susceptible to

A. <i>Meloidogyne spp. nematodes</i>
B. <i>L. peruviaanum</i>
C. both (a) and (b)
D. <i>Solarium melongena</i>
Answer» B. <i>L. peruviaanum</i>
17.

Microinjection technique of introducing NA is a

A. physical method
B. biological method
C. combination of physical and biological method
D. chemical method
Answer» B. biological method
18.

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
19.

Which of the following technique can be used to develop nematode resistant plants?

A. Embryo-rescue
B. Mutation
C. Non-recombinant DNA
D. All of these
Answer» E.
20.

Random amplified polymorphic DNA (RAPD) is a method that

A. stimulate production of sense RNA to compensate
B. activate the expression of all genes in a biochemical pathway
C. eliminate the expression of all genes in a biochemical pathway
D. reveals intra-specific variation and diversity between species
Answer» E.
21.

Commercial sugarcane is heterozygons with germplasm from

A. 1-3 Saccharum species
B. 3-5 Saccharum species
C. 5-7 Saccharum species
D. 7-9 Saccharum species
Answer» C. 5-7 Saccharum species
22.

Which of the following govern sporophytic self-incompatibility in Brassica?

A. Aegilops
B. Triticum
C. Both (a) and (b)
D. S alleles
Answer» E.
23.

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
24.

and cyclo dextrins are produced by

A. transgenic tomato
B. transgenic maize
C. transgenic potato
D. transgenic wheat
Answer» D. transgenic wheat
25.

and 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.
26.

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
27.

Wheat variety Rendezvous, with resistance to eye spot (Pseudo-cercosporella herpotrichoides) derived from Aegilops ventricosa, has a chloroplast genome derived from

A. Aegilops
B. Triticum
C. Both (a) and (b)
D. S alleles
Answer» B. Triticum
28.

The intervention in the communication system of nematodes offer several possibilities of bio control. Which of the following(s) play(s) a very important role in the host recognition?

A. Protein
B. Lipid
C. Carbohydrate moiety
D. Minerals
Answer» D. Minerals
29.

Human serum albumin has been synthesized by

A. transgenic potato and tobacco plants
B. transgenic maize plants
C. transgenic wheat plants
D. any of the above
Answer» B. transgenic maize plants
30.

The tumor phenotype, which can be maintained indefinitely in tissue culture, results from the expression of genes on the

A. T-DNA
B. c-DNA
C. r-DNA
D. m-RNA
Answer» B. c-DNA
31.

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
32.

Which of the following transfers a set of genes encoded in a region called T-DNA of the Ti-plasmid into cells at wound positions?

A. <i>A. tumefaciens</i>
B. <i>L. peruvianum</i>
C. <i>L. birsutum</i>
D. <i>A. sterilis</i>
Answer» B. <i>L. peruvianum</i>
33.

Human serum albumin in case of transgenic plant is secreted in

A. transgenic leaf tissues
B. transgenic root tissues
C. is not secreted out of plant
D. transgenic stem tissues
Answer» B. transgenic root tissues
34.

Avermectins (AVM) are macrocyclic lactones which have potent antihelminthic and insecticidal action. They are generally derived from the mycelia of

A. <i>Streptomyces avermitilis</i>
B. <i>B. thrunigiensis</i>
C. <i>P. flourescens</i>
D. <i>L. peruvianum</i>
Answer» B. <i>B. thrunigiensis</i>
35.

Plant tissue culture technique is used to select somaclones that are

A. resistant to herbicide
B. not resistant to herbicide
C. resistant to insecticides
D. not resistant to insecticides
Answer» B. not resistant to herbicide
36.

Which of the following has been confirmed on sugarcane genotypes?

A. Bacilliform virus
B. Cytomegalovirus
C. Varicella-zoster virus
D. Erythrovirus
Answer» B. Cytomegalovirus
37.

The hybrid embryo can be rescued from damage/collapse by growing it

A. at low temperature
B. at low pH
C. at low water activity
D. in artificial medium
Answer» E.
38.

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
39.

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