Identify the organisms that do not reproduce and organisms that are immortal, respectively.

Mules are hybrid animals resulting from the mating of a male donkey (jack) and a female horse (mare). Mules are sterile, meaning they cannot reproduce. 

Amoeba is a type of single-celled organism belonging to the group of protists. In unicellular organisms growth and reproduction are mutually inclusive events. Hence, they are considered immortal.