Question

why reproduction is not defining characteristics of living organisms​

Answer 1

Explanation:

Reproduction is the ability to produce younger ones. It cannot be considered as a defining property of the living organism because in unicellular organism the increase in number of cells is considered as growth as well reproduction.

Answer 2

Answer

$\bigstar$ Reproduction involves the production of progeny of organisms possessing features similar to those of parents.

$\bigstar$ Reproduction is necessary for the continuation of life and to compensate for the loss of life due to death. Organisms reproduce by asexual or sexual means.

$\bigstar$ In single celled organisms we are not clear about the usage of growth and reproduction terms.

$\bigstar$ There are many organisms which do not reproduce like infertile human couples, mules , sterile worker bees.

Hence, reproduction cannot be defining characteristics of living organisms.