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B
Bean root cells
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C
Maize stem cells
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D
Wheat stem cells
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Solution
The correct option is C Orchid root cells A. Orchid root cells
Reason : In 1831, during the investigation of the fertilization mechanisms of plants in the Orchidaceae families, botanist Robert Brown noted the existence of a structure within the cells of orchid roots, as well as many other plants, that he termed the “nucleus” of the cell.