Question

define cell theory in detail​

Answer 1

$\huge{\sf{Cell \ Theory}}$

• In 1835 Schleiden,a plant botanist from his extensive study of plants tissue concluded that all the plants are made up of cells

• In 1836,a zoologist,Schwann stated that cells are the basic constituents of all living organisms

• Together both these postulates were categorised under the Cell Theory

• Later in 1855,Rudolf Virchow modified the cell theory:all the cells have been formed from pre existing cells

Answer 2

Answer:

Key points of the cell theory are:

• All known living things are made up of one or more cells.
• All cells arise from pre-existing cells by division.
• The cell is the fundamental unit of structure and function in all living organisms.
• The activity of an organism depends on the total activity of independent cells.
• Energy flow occurs within cells.