<P> The cells in animal tissues were observed after plants were because the tissues were so fragile and susceptible to tearing , it was difficult for such thin slices to be prepared for studying . Biologists believed that there was a fundamental unit to life , but were unsure what this was . It would not be until over a hundred years later that this fundamental unit was connected to cellular structure and existence of cells in animals or plants . This conclusion was not made until Henri Dutrochet . Besides stating `` the cell is the fundamental element of organization '' , Dutrochet also claimed that cells were not just a structural unit , but also a physiological unit . </P>
<P> The cells in animal tissues were observed after plants were because the tissues were so fragile and susceptible to tearing , it was difficult for such thin slices to be prepared for studying . Biologists believed that there was a fundamental unit to life , but were unsure what this was . It would not be until over a hundred years later that this fundamental unit was connected to cellular structure and existence of cells in animals or plants . This conclusion was not made until Henri Dutrochet . Besides stating `` the cell is the fundamental element of organization '' , Dutrochet also claimed that cells were not just a structural unit , but also a physiological unit . </P>
who stated that animals and plants are made of cells
who stated that animals and plants are made of cells
Henri Dutrochet
Henri Dutrochet