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Agrobacterium tumefaciens is frequently used as a vector to create transgenic plants. Under laboratory conditions Agrobacterium – mediated plant transformation does not require (1) host plant genes (2) bacterial type […]

The T-DNA region of the Ti plasmid of Agrobacterium tumefaciens harbors two genes: X and Y. Mutation of gene ‘X’ produces a rooty tumour while mutation of gene ‘Y’ produces […]

A set of virulence genes (vir genes), located in the Agrobacterium Ti-plasmid, is activated by (1) octopine                         (2) nopaline […]

Treatment of acetosyringone is given during transfer of transgene using Agrobacterium as vector. The rationale behind this is that acetosyringone (1) Helps in anchorage of bacteria to plant cell wall […]

Which microbe has been used against insect plant pathogens? (1) Agrobacterium tumefaciens (2) Agrobacterium rhizogenes (3) Bacillus thuringenesis (4) Fusarium nudum Why Bacillus thuringiensis is correct Bacillus thuringiensis (Bt) is […]

Which of the following organism have been extensively used in generation of transgenic plants? (1) Agrobacterium tumfaciens              (2) Bacilus thuringensis (3) Baculo viruses    […]

Arabidopsis thaliana seeds were planted on Murashige Skoog (MS) plates with or without a hormone added to the medium. Seeds were found to germinate late in the hormone containing MS […]

Protoplast fusion is used in plant tissue culture for various applications. In protoplast fusion: A. naked plant cells are used. B. transfer of organelles is not possible. C. partial genome […]

Following are certain statements regarding somatic hybridization, a technique used for plant improvement. A. Protoplasts of only sexually compatible plant species can be fused. B. Hybrids are produced with variable […]

The following statements are related to plant tissue culture A. Friable callus provides the inoculum to form cell- suspension cultures. B. The process known as ‘habituation’ refers to the property […]