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Question

In which structure did the Robert Brown see the cell nucleus?

A
Cell of the orchid root
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B
Pollen grains
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C
Red blood tells of humans
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D
White blood cells of humans
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Solution

The correct option is A Cell of the orchid root
Brown was studying orchids under microscope when he observed an opaque area, which he called the "areola" or "nucleus", in the cells of the flower's outer layer. So, the correct option is "A" (Cell of the orchid root).

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