8. Schleiden and Schwann's cell theory could not explain
a) Cell formed from pre-existing cell
b) How new cells were formed
c) Body of animals are composed of cells
d) None of the above
Answers
Schleiden and Schwann's cell theory could not explain how new cells were formed.
The cell theory is a scientific theory formulated by
Matthias Schleiden and Theodor Schwann in 1943.
According to cell theory, Every living organism is formed of one or more than one cell; cells are the structural and functional unit of all living beings, and a new cell is formed from an already existing cell.
One of the major drawbacks of cell theory is that it could not explain how new cells are formed.
Schleiden and Schwann stated that the new cells are formed by the process of crystallization within the cells or from outside which was later refuted.
Other drawbacks include that it couldn't explain the life process of acellular organisms such as viruses.
Hence, the correct answer is option (b) How new cells were formed.
Learn more about cell theory at
https://brainly.in/question/1533796