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

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

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Gene Transfer in Plants
Crown gall tissue

shows tumorous properties only in presence of bacteria
both (a) and (b)
retains tumorous properties when cultivated
can be cultivated in vitro in absence of bacteria

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Gene Transfer in Plants
Opines are

amino acid derivatives found in both normal as well as tumor tissues
None of these
amino acid derivatives found in normal tissues
amino acid derivatives found in tumor tissues

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