Ch. 18 Classification Test Review

Biologists use a classification system to group organisms in part because organisms

• are going extinct.
• are very numerous and diverse.
• are too much alike.
• share too many derived characters.

Scientists assign each type of organism a universally accepted name in the system known as

• traditional classification.
• the three domains.
• binomial nomenclature.
• cladistics.

For many species, there are often regional differences in their

• common names.
• scientific names.
• taxa.
• binomial nomenclature.

In taxonomy, a group at any level of organization is referred to as a

• cladogram
• binomial.
• taxon.
• system.

In the scientific version of a species name, which of the terms is capitalized?

• the first term only
• the second term only
• both the first and second terms
• neither the first nor the second term

Based on their names, you know that the baboons Papio annubis and Papio cynocephalus do NOT belong to the same

• class.
• family.
• genus.
• species.

The second part of a scientific name is unique to each

• order in its class.
• family in its order.
• genus in its family.
• species in its genus.

In Linnaeus’s system of classification, how many taxonomic categories were there?

• one
• three
• five
• seven

Which two kingdoms did Linnaeus recognize?

• bacteria and animals
• plants and fungi
• plants and animals
• protists and animals

Animals that are warm-blooded, have body hair, and produce milk for their young are grouped in the class

• Amphibia.
• Mammalia.
• Aves.
• Reptilia.