Plant Cell Culture
The ability of the component cells of callus to form a whole plant is known as

dedifferentiation
none of these
redifferentiation
either (a) or (b)

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Plant Cell Culture
In a callus culture

increasing level of cytokinin to a callus induces shoot formation and increasing level of auxin promote root formation
auxins and cytokinins are not required
only auxin is required for root and shoot formation
increasing level of auxin to a callus induces shoot formation and increasing level of cytokinin promote root formation

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