Question

classification system in which each species is assigned a two - part scientific name

o taxonomy
o phylogeny
o common names
o binomial nomenclature

group of closely related species *

o family
o order
o class
o genus

domain consisting of unicellular prokaryotes that have cell walls that do not contain peptidoglycan; members exist in harsh environments

o eubacteria
o eukarya
o archaea
o bacteria

Explanation:

• Binomial nomenclature is the system where each species is given a two - part scientific name (genus + species). Taxonomy is the broader study of classification, phylogeny is about evolutionary history, and common names are non - scientific names.
• A genus is a group of closely related species. A family is a higher - level group (several genera), an order is higher than a family, and a class is higher than an order.
• Archaea are unicellular prokaryotes with cell walls that lack peptidoglycan and often live in harsh environments. Eubacteria (Bacteria) have peptidoglycan in their cell walls, and Eukarya are eukaryotic organisms.

Answer:

1. binomial nomenclature
2. genus
3. Archaea