Question

who and when discovered cell theory​

Answer 1

Answer:

schielden and shwan give cell theory

Explanation:

and rudolf vircho completed cell theory.

hope this will help you

Answer 2

Answer:

the cell theory that all plants and animals are composed of cell and that cell is basic unit of life was presented by two biologist , Schleiden in 1838 and Schwann in 1839 . It was later expanded by Virchow in 1855 by suggesting all cells arise from pre existing cells.