Biology
Amoeba proteus was discovered by

Paul Émile de Puydt
William Bullock
Johann Rösel von Rosenhof
Gerald Durrell

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Biology
Osmosis is the flow of solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement?

All are incorrect
Character of semi permeable membrane is not given
Exact concentration of solution is not given
The flow of solution is not possible through semi permeable membrane

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