Question

Which of the following is NOT one of the main components of cell theory?

• A. Cells require water for its survival.
• B. All living organisms are made of cells.
• C. New cells can only come from other cells.
• D. Cells are the basic unit of life.

Answer 1

The correct option is A Cells require water for its survival.

As per the cell theory stated by Schleiden and Schwann:
1. The cell is the basic unit of life
2. All living organisms are made up of cells and products of cells.

Rudolf Virchow modified the cell theory and added "Omnis cellula-e cellula", which means that all cells arise from pre-existing cells. Though cells require water for its composition and survival, it is not a part of cell theory.