Answer:
a. Group or level of classification. 2. Taxon
b. A population of microbes descended from a single individual or pure culture. 4. Strain
c. Groups are based on convenient, observable characteristics. 5. Phenetic classification
d. The classification of living organisms into groups. 3. Taxonomy
e. Groups reflect genetic similarity and evolutionary relatedness. 1. Phylogenetic classification
Step-by-step explanation: