| 31. | 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 |
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Answer: (d).all of the above
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| 32. | 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 |
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Answer: (c).25 bp
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| 33. | Agrobacterium tumefaciens is a |
| a. | gram (+) bacteria |
| b. | gram (-) bacteria |
| c. | a fungi |
| d. | a yeast |
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Answer: (b).gram (-) bacteria
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| 34. | 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 |
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Answer: (b).tumour inducing plasmid DNA
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| 35. | The size of the virulent plasmid of Agrobacterium tumefaciens is |
| a. | 40-80 kb |
| b. | 80-120 kb |
| c. | 140-235 kb |
| d. | >235 kb |
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Answer: (c).140-235 kb
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