Which is correct about cell theory in view of current status of our knowledge ab

Question

Which is correct about cell theory in view of current status of our knowledge about cell structure?

(a) it needs modification due to discovery of subcellular structures like chloroplasts and mitochondria

(b) modified cell theory means that all living being are composed of ceils capable of reproducing

(c) cell theory does not hold good because all living beings (e.g., viruses) do not have cellular organisation

(d) cell theory means that all living objects consists of celis whether or not capable of reproducing.

Explanation / Answer

b) modified cell theory means that all living being are composed of ceils capable of reproducing.

cell theory was formulated in 1839 by  Matthias Schleiden and Theodor Schwann. Cells are the basic unit of life, so all living organism are made up of cell, structure and organization in organisms are made up of cells. Cells arise by cell division from pre-existing cells. They are  capable to do reproduction.

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