Gene Transfer in Plants
Which of the following plant signal molecules regulate the expression of vir B, C, D and E in case of tobacco?

Both (a) and (b)
None of these
Acetosyringone
α-hydroxy syringone

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Gene Transfer in Plants
Which of the following is not true for microinjection technique that involves transfer of DNA into protoplast?

The recipient cells are immobilized on artificial support or artificially bound to substarate
It is carried out with the help of micromanipulator
All of these
It employs needle with diameter greater than cell diameter

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Gene Transfer in Plants
Advantage of microprojectile method over microinjection method for gene transfer in plants include

gene can be transferred to many cells simultaneously
intact cells are used
All of these
method is universal in its application irrespective of all shape, size, type and presence or absence of cell wall

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Gene Transfer in Plants
Virulent strains of Agrobacterium contain large Ti-plasmids, which are responsible for the DNA transfer and subsequent disease symptoms. It has been shown that Ti-plasmids contain

four sets of sequence necessary for gene transfer
two sets of sequence necessary for gene transfer
three sets of sequence necessary for gene transfer
one set of sequence necessary for gene transfer

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