Question

by whom and when was cell theory proposed ? what are its salient features ?​

Answer 1

$\huge\bold{Answer::}$

•The Cell Theory was proposed by M. J. Schleiden and Theodor Schwan.

•Scheleiden prepared the cell theory in plants of 1838 and Schwan prepared the cell theory of animals in 1839.

⟿The salient features of it are:

$\tt\large\green\rightarrow$Cell is the unit of structure.

$\tt\large\green\rightarrow$Cell is the unit of functions.

$\tt\large\green\rightarrow$Cell is the unit of heredity.

$\tt\large\green\rightarrow$All living cells arise from the pre-existing cells.

Answer 2

Cell theory was given by two biologists - Schleiden (1838) and Schwann(1839)

According to this theory -

• All the plants and animals are composed of cells
• The cell is the basic unit of life

The cell theory states that -

• The cell is the small unit of structure of all living things
• The cell is the unit of function of all living things
• All cells arises from pre - existing cells

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