Biology: Classification, Domains & Human Taxonomy

Study set made from class slides on organism groups, taxonomic ranks, and human classification.

What organisms have photosynthetic ability?

Plants, Archaea, and Protista

What organisms absorb food?

Bacteria, Fungi, and Protista

What organisms ingest food?

Animals

What organisms are prokaryotic?

Bacteria and Archaea

What are the three domains of life?

Bacteria, Archaea, and Eukarya

What group is usually unicellular and eukaryotic?

Protista

Which organisms are known as extremophiles?

Archaea

Taxonomic categories from most inclusive to least inclusive

Life → Domain → Kingdom → Phylum → Class → Order → Family → Genus → Species

What is the most inclusive taxonomic category?

Life

What does each domain contain?

Kingdoms

What does each kingdom contain?

Phyla

What does each phylum contain?

Classes

What does each class contain?

Orders

What does each order contain?

Families

What does each family contain?

Genera

What does each genus contain?

Species

What is the least inclusive taxonomic category?

Species

Human domain

Eukarya

Human kingdom

Animalia

Human phylum

Chordata

Human class

Mammalia

Human order

Primates

Human family

Hominidae

Human genus

Homo

Human species

Homo sapiens

What characteristic defines Domain Eukarya?

Cells with nuclei

What characteristics define Kingdom Animalia?

Multicellular, motile, and ingest food

What characteristics define Phylum Chordata?

A dorsal supporting rod and nerve cord

What characteristics define Class Mammalia?

Hair and mammary glands

What characteristic is associated with Order Primates?

Adapted to climb trees

What characteristic is associated with Family Hominidae?

Adapted to walk erect

What characteristics are associated with Genus Homo?

A large brain and tool use

What characterizes Homo sapiens?

Body proportions of modern humans

What naming system specifies an organism using two words?

Binomial nomenclature

What is the full binomial name for humans?

Homo sapiens