what are the contributions of the following in biology?

Rianne Karla G

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René Joachim Henri Dutrochet
He investigated and described osmosis, respiration, embryology, and the effect of light on plants. He has been given credit for discovering Cell biology and cells in plants and the actual discovery of the process of osmosis.
Robert Hooke
was an English natural philosopher and polymath who played an important role in the scientific revolution, through both experimental and theoretical work.
marie francois
was a French statesman, the fourth president of the Third French Republic. He served as the President of France from 1887 until his assassination in 1894.
leonardo da vinci
was an Italian polymath, scientist, mathematician, engineer, inventor, anatomist, painter, sculptor, architect, botanist, musician and writer. Leonardo has often been described as the archetype of the renaissance man, a man whose unquenchable curiosity was equaled only by his powers of invention.[1] He is widely considered to be one of the greatest painters of all time and perhaps the most diversely talented person ever to have lived.[2] Helen Gardner says "The scope and depth of his interests were without precedent...His mind and personality seem to us superhuman, the man himself mysterious and remote".[1]
 
René Joachim Henri Dutrochet
He investigated and described osmosis, respiration, embryology, and the effect of light on plants. He has been given credit for discovering Cell biology and cells in plants and the actual discovery of the process of osmosis.
Robert Hooke
was an English natural philosopher and polymath who played an important role in the scientific revolution, through both experimental and theoretical work.
marie francois
was a French statesman, the fourth president of the Third French Republic. He served as the President of France from 1887 until his assassination in 1894.
leonardo da vinci
was an Italian polymath, scientist, mathematician, engineer, inventor, anatomist, painter, sculptor, architect, botanist, musician and writer. Leonardo has often been described as the archetype of the renaissance man, a man whose unquenchable curiosity was equaled only by his powers of invention.[1] He is widely considered to be one of the greatest painters of all time and perhaps the most diversely talented person ever to have lived.[2] Helen Gardner says "The scope and depth of his interests were without precedent...His mind and personality seem to us superhuman, the man himself mysterious and remote".[1]
 
early greeks, rene dutrochet and robert hooke,marie francois bichat and leonardo da vinci

please help me...


i need the answer now..
 
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