Question

Why do we say that there is no death to single celled organisms?

Answer 1

A single celled organism keeps on dividing into two by asexual reproduction. So, at the end of there life cycle they simply divide and not die naturally. They only die because of the external factors like high temperature of pH. So, until and unless these forces comes into play the cell keeps on dividing and we can say that there is no natural death in single celled organism.