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Q.

The controlling center of cell was discovered by 

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a

Anton Von Leeuwenhoek in protozoa.

b

Purkinje in cork cells.

c

Robert Hooke in root cells of orchids.

d

Robert Brown in root cells of orchids.

answer is A.

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Detailed Solution

Robert Brown discovered the nucleus from the root cells of orchids. Nucleus is described as controlling center of cell. 

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