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

Options

(a) It needs modification due to discovery of subcellular structures like chloroplasts and mitochondria
(b) Modified cell theory means that all living beings are composed of cells 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 consist of cells whether or not capable of reproducing

Correct Answer:

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

Explanation:

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