Category: CSIR NET Life Science Previous Year Questions and Solution on applied biology

A transposon carrying a promoterless ß-galactosidase (lac Z) was used to create insertional mutation in the vir region of Ti-plasmid of Agrobacterium tumefaciens. All the mutants in which lac Z […]

Which of the following statement is NOT true during infection of plant cell by Agrobacterium? (1) The protein products of virulence genes Vir A and VirG perceives acetosyringone (2) The […]

To increase the shelf-life of tomato, which of the following genes should be silenced? (1) ACC synthase                     (2) EPSP synthase (3) […]

Agrobacterium Ti plasmid vectors are used to generate transgenic plants. The following are examples of vir gene encoded proteins that are important for transfer of T-DNA in to plants. A- […]

Match the following Vir proteins with their correct function during Agrobacterium mediated transfer of T- DNA to plant cells. (1) A-(i), B-(ii), C-(iii), D-(iv) (2) A-(iv). B-(i). C-(ii), D-(iii) (3) […]

Given below are four statements related to Agrobacterium-mediated transfer of T-DNA into plant cells: A. Production of single-stranded T-DNA by VirD1 and VirD2 proteins. B. Interaction of VirE2 with VIP1 […]

Agrobacterium tumefaciens, also known as natural genetic engineers, causes crown-gall disease in plants. However, when the same bacteria are used to raise transgenic plants with improved agronomic traits, no such […]

Following are some statements related to raising transgenic plants A. T-DNA of Agrobacterium contains oncogenes and opine synthesis genes B. All 8 operons present in vir region of Agrobacterium is […]

While designing an experiment for Agrobacterium mediated plant transformation, a student noted down the following points: A. Ti and Ri plasmids induce crown gall and hairy root disease, respectively B. […]

Following are certain statements regarding the use of Agrobacterium in plant transformation. A. A. tumefaciens causes crown gall disease and A. rhizogenes causes hairy root disease. B. Region A in […]