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Biotechnology Objective Questions { Special Proteins and Crop Improvement }

1. Which of the following has been confirmed on sugarcane genotypes?
A.Bacilliform virus
C.Varicella-zoster virus
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2.  Involvement of sugarcane phytoalexins in red-hot resistance has been observed. The phytoalexin compound is reported to be
D.5-0 apigeninidin
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3. 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
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4. 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
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5. The tumor phenotype, which can be maintained indefinitely in tissue culture, results from the expression of genes on the
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6. 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?
A.Meristem tip cultures
B.Embryo cultures
C.Both (a) and (b)
D.Embryo cultures supplemented with GA3 and coconut milk
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7. 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
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