Special Proteins and Crop Improvement Questions and Answers

Multiple Choice Questions and Answers on Special Proteins and Improvement

Question 1 : Cultivated tomato species (Lycopersicon esculentum) has a high degree of resistance towards

  1. Meloidogyne spp.nematodes
  2. L. peruviaanum
  3. both (1) and (2)
  4. Solarium melongena

Answer : 2

Question 2 : When the transposon jumps into an otherwise functional gene, it has the effect of

  1. blocking correct transcription
  2. initiating correct transcription
  3. propagating correct transcription
  4. initiating some genetic codes

Answer : 1

Question 3 : Which of the following constituent/(s) is/are added to help in speedy generation of meristem culture in case of Ipomoea batatas improvement?

  1. Auxins
  2. Cytokinins
  3. Both (1) and (2)
  4. Adenine

Answer : 3

Question 4 : cDNA clone prepared to stigma mRNA of Brassica oleracea can be used as a probe on DNA digests of segregating populations to recognize

  1. Aegilops
  2. Triticum
  3. Both (1) and (2)
  4. S alleles

Answer : 4

Question 5 : Plant tissue culture technique is used to select somaclones that are

  1. resistant to herbicide
  2. not resistant to herbicide
  3. resistant to insecticides
  4. not resistant to insecticides

Answer : 1

Question 6 : Which of the following mutant/(s) has/have increased amount of lysine and/or methionine in corn seeds?

  1. Opaque-2
  2. Sugary-1
  3. Flory-2
  4. All of these

Answer : 4

Question 7 : Which of the following is the class of hybridization?

  1. Intervarietal
  2. Interspecific
  3. Intergeneric
  4. all of these

Answer : 4

Question 8 : Cultivated tomato species (Lycopersicon esculentum) is highly susceptible to

  1. Meloidogyne spp. nematodes
  2. L. peruviaanum
  3. both (1) and (2)
  4. Solarium melongena

Answer : 1

Question 9 : In transgenic plants of Arabidipsis thaliana which of the following gene is transferred for the synthesis of PHB (polyhdroxybutyrate)?

  1. Acetyl Co A reductase
  2. Polyhydroxybutyrate synthease
  3. Both (1) and (2)
  4. Pyrophosphorylase

Answer : 3

Question 10 : Somaclonal variation method refers to

  1. heritable changes
  2. genetic isolation
  3. small number of species having limited commercial potential
  4. large number of plant cells

Answer : 1

Question 11 : α and β cyclo dextrins are produced by

  1. transgenic tomato
  2. transgenic maize
  3. transgenic potato
  4. transgenic wheat

Answer : 3

Question 12 : α and β cyclo dextrins are used for

  1. pharmaceutical delivery system
  2. flavour and odour enhancement in foods
  3. removal of undesired compounds like caffeine from foods
  4. all of the above

Answer : 4

Question 13 : Microinjection technique of introducing NA is a

  1. physical method
  2. biological method
  3. combination of physical and biological method
  4. chemical method

Answer : 1

Question 14 : MS medium, is found essential for initial morphogenesis of the immature embryos and to enhance callus development, when supplemented with

  1. GA3
  2. GA3 and coconut milk
  3. adenine
  4. adenine and kinetin

Answer : 2

Question 15 : Meristem culture of banana enables

  1. rapid multiplication
  2. elimination of bunch top virus disease
  3. both (1) and (2)
  4. slow growth

Answer : 3

Question 16 : Wheat variety Rendezvous, with resistance to eye spot (Pseudo-cercosporella herpotrichoides) derived from Aegilops ventricosa, has a chloroplast genome derived from

  1. Aegilops
  2. Triticum
  3. Both (1) and (2)
  4. S alleles

Answer : 1

Question 17 : Human serum albumin in case of transgenic plant is secreted in

  1. transgenic leaf tissues
  2. transgenic root tissues
  3. is not secreted out of plant
  4. transgenic stem tissues

Answer : 1

Question 18 : Protoplast fusion technique generally involves

  1. isolation only
  2. isolation and fusion
  3. isolation, fusion and culturing
  4. hybridization between two species

Answer : 3

Question 19 : Cytoplast (somatic cell hybridization) is the process in which

  1. two protoplast along with their nuclei fuse
  2. a normal protoplast along with an enucleated protoplast fuse
  3. both (a) and (b)
  4. two enucleated protoplasts fuse

Answer : 3

Question 20 : Which of the following govern sporophytic self-incompatibility in Brassica?

  1. Aegilops
  2. Triticum
  3. Both (1) and (2)
  4. S alleles

Answer : 4

Question 21 : Commercial sugarcane is heterozygons with germplasm from

  1. 1-3 Saccharum species
  2. 3-5 Saccharum species
  3. 5-7 Saccharum species
  4. 7-9 Saccharum species

Answer : 2

Question 22 : 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?

  1. Protein
  2. Lipid
  3. Carbohydrate moiety
  4. Minerals

Answer : 3

Question 23 : The hybrid embryo can be rescued from damage/collapse by growing it

  1. at low temperature
  2. at low pH
  3. at low water activity
  4. in artificial medium

Answer : 4

Question 24 : For increased level of mannitol in transgenic tobacco plants which of the following gene is transferred?

  1. Mannitol dehydrogenase
  2. Mannitol synthease
  3. Both (a) and (b)
  4. Mannitol pyrophosphorylase

Answer : 1

Question 25 : Which of the following have been used for cryo-preservation of germplasm with 90% tissue survival and 10%plant regeneration that are used in international exchange of germplasm?

  1. Meristem tip cultures
  2. Embryo cultures
  3. Both (a) and (b)
  4. Embryo cultures supplemented with GA3 and coconut milk

Answer : 1

Question 26 : Establishment of embryogenic cell suspensions with high regeneration potential is a pre-requisite for successful

  1. protoplast culture
  2. detection of nucleic acid sequence
  3. restriction of fragment length polymorphisms
  4. microinjection

Answer : 1

Question 27 : Which of the following technique can be used to develop nematode resistant plants?

  1. Embryo-rescue
  2. Mutation
  3. Non-recombinant DNA
  4. All of these

Answer : 4

Question 28 : Random amplified polymorphic DNA (RAPD) is a method that

  1. stimulate production of sense RNA to compensate
  2. activate the expression of all genes in a biochemical pathway
  3. eliminate the expression of all genes in a biochemical pathway
  4. reveals intra-specific variation and diversity between species

Answer : 4

Question 29 : 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?

  1. A. tumefaciens
  2. L. peruvianum
  3. L. birsutum
  4. A. sterilis

Answer : 1

Question 30 : Which of the following has been confirmed on sugarcane genotypes?

  1. Bacilliform virus
  2. Cytomegalovirus
  3. Varicella-zoster virus
  4. Erythrovirus

Answer : 1

Question 31 : Involvement of sugarcane phytoalexins in red-hot resistance has been observed. The phytoalexin compound is reported to be

  1. 3-deoxyanthocyanidin
  2. luteolinidin
  3. apigeninidin
  4. 5-0 apigeninidin

Answer : 1

Question 32 : Human serum albumin has been synthesized by

  1. transgenic potato and tobacco plants
  2. transgenic maize plants
  3. transgenic wheat plants
  4. any of the above

Answer : 1

Question 33 : Avermectins (AVM) are macrocyclic lactones which have potent antihelminthic and insecticidal action. They are generally derived from the mycelia of

  1. Streptomyces avermitilis
  2. B. thrunigiensis
  3. P. flourescens
  4. L. peruvianum

Answer : 1

Question 34 : The tumor phenotype, which can be maintained indefinitely in tissue culture, results from the expression of genes on the

  1. T-DNA
  2. c-DNA
  3. r-DNA
  4. m-RNA

Answer : 1