Question

The theory of ''Cell lineage'' was proposed by
1. Rudolf Virchow
2. Schwann
3. Schleidin
4. Hofmeister & Karl Nageli

Answer 1

Correct Answer - Option 1 : Rudolf Virchow

Explanation:

• Rudolf Virchow gave the concept of Omnis cellula - e - cellula which means new cells arise from the pre-existing cells. 
• This is also known by the name ''Cell lineage theory'' hence, the correct option is ''Rudolf Virchow''
• He modified the hypothesis of Schleiden and Schwann to give the cell theory a final shape. Cell theory as understood today is:
• All living organisms are composed of cells and products of cells.
• All cells arise from pre-existing cells.

 

• Matthias Schleiden was a German botanist who examined a large number of plants and observed that all plants are composed of different kinds of cells that form the tissues of the plant.
• Theodore Schwann was a British Zoologist who studied different types of animal cells and reported that cells had a thin outer layer which is today known as the plasma membrane’. He also concluded, based on his studies on plant tissues, that the presence of a cell wall is a unique character of the plant cells.
• Schleiden and Schwann together formulated the cell theory
• Chromosomes were observed by Hofmeister and Karl Nageli.