Question

Assertion: Schleiden and Schwann proposed the cell theory.
Reason: His cell theory states that all plants and animals are composed of cells.​

Answer 1

Answer:

By the late 1830s, botanist Matthias Schleiden and zoologist Theodor Schwann were studying tissues and proposed the unified cell theory. The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells

Explanation:

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Answer 2

Explanation:

1) The cell theory was proposed by two scientists- Schleiden (1838)and Schwann (1839). It says that all the plants and animals are composed of cells and the cell is the basic unit of life. 2) The cell theory was further expanded and corrected by Virchow (1855) by suggesting that all cells arise from pre-existing cells.

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