Answer:
The correct answer is:
An organism was found with tissues made of something other than cells. (A)
Explanation:
The postulation of the cell theory is credited to Matthias Schleiden; a German Botanist, Theodor Schwann; a German physician and physiologist, and Rudolf Virchow; a German physician, biologist and anthropologist in 1839.
The Cell Theory has three main aspects which include that;
1. cells are the basic structural and organizational unit of life
2. all living thing are composed of at least one cell
3. all cells in existence, come from pre-existing cells.
Hence, the Cell Theory can be stated as; all living things are made up of cells which are the basic structural and organizational unit of life, and all cells come from pre-existing cells. However, the first statement that 'all living things are made up of cells' is being disputed because viral particles are considered lifeforms, and are not made up of cells
Before the postulation of the Cell Theory in 1839, the belief among scientists was the belief of spontaneous generation, which postulates that living organisms emerged spontaneously from unrelated materials, without necessarily arising from similar organisms.
The success of the Cell Theory can also be owed to the development of the microscope by Robert Hooke, who initiated cell biology.
