A mass of dividing, undifferentiated cells in a tissue culture is called ______________.
A
A Shield
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B
A Callus
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C
An Embryoid
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D
An Aggregate
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E
A Plasmodium
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Solution
The correct option is B A Callus Explanation: Plant callus (plural calluses or calli) is a mass of unorganized parenchyma cells derived from plant tissue (explants) for use in biological research and biotechnology. In plant biology, callus cells are those cells that cover a plant wound.