The unicellular organisms which reproduce by binary fission are considered immortal. Justify.

Explanation

(i) In binary fission( asexual reproduction), the partental organism divide into two halves and each half forms a daughter individual. This is seen in unicellular organism like bacteria, Amoeba etc. (iii) Thus the unicellular organims which reproduce by binary fission are considered immortal.
(iv) In other cases of asexual reproduction, the parent produces special structures like bud, spores etc for reproduction but the parent organism contiues to live and grow. It dies a natural death.