Question

c.What are the three postulates of Cell theory?

Answer 1

in 1838 scleiden , a german botonist , concluded that despite of the differences in the structure of the various tissues , plants were made of cells
in 1839, a german zoologist , T Schwann publisged a comprehensive report on the cellular basis of animals . both of them are proposed in a cell thory which stated that
^ all organisms are composed of one cell or more
^ the cell isnthe structural and funcional unit of life

schleiden and scwann'/s ideas on the origin of cell was not convincing , both agreed that cell is a ' de novo' structure . means that it could arise from a non cellular material . however , in 1855 rudolf virchow , a german pathologist had made a convincing case and added a third point to the cell theoru which is :
^. cells can arise from a pre existing cell , it is hot de nove structure

Answer 2

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