What was Rudolf Virchow’s contribution to the cell theory? He concluded that all cells come from preexisting cells.
He concluded that cells are the basic units of structure and function of all living things.
He concluded that all organisms are composed of cells.
He concluded that all cells are similar in composition and metabolic activities.

He concluded that all cells come from preexisting cells.

Explanation:

Rudolf Virchow was a German scientist experienced in many fields, including medicine, biology, anthropology, and prehistory. He is especially noted for his contribution to the cell theory. He discovered that all cells come from preexisting cells, which made it clear that diseases develop at the cellular level. This means that Virchow was the one to discover that cancer cells originate from healthy cells. All of this allowed scientists to diagnose diseases more accurately and efficiently.

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.