2-1: Scientists develop systems for classifying living things.
Pg. 43-50
Date: _____________
1. Classification: (Pg. 44)
The systematic grouping of different types of organisms by
their shared characteristics
2. Taxonomy: (Pg. 44)
The science of classifying and naming organisms
2-2: Biologists use seven levels of classification.
Pg. 51-59
Date: _____________
1. Genus: (Pg. 52)
The first part of a binomial name that groups together closely
relates species
2. Binomial Nomenclature: (Pg. 52)
The two-part naming system used to identify species. The first
part of the name is the genus, and the second part of the name is
the species.
3. Dichotomous Key: (Pg. 56)
A series of questions, each with only two answers, that can be
used to help identify an organism’s genus and species
2-3: Classification systems change as scientists learn more.
Pg. 60-69
Date: _____________
1. Domain: (Pg. 61)
One of three divisions in a classification system based on different
types of cells; the six kingdoms of living things are grouped into
three domains: Archea, Bacteria, and Eukarya.
2. Plantae: (Pg. 63)
The kingdom Plantae includes multicellular organisms, such as
trees, grass, and moss, that are capable of photosynthesis,
capturing energy from the Sun
3. Animalia: (Pg. 63)
The kingdom Animalia includes multicellular organisms, from
humans and lions to insects and microbes, that rely on food for
energy
4. Protista: (Pg. 63)
The kingdom Protista includes mostly single-celled organisms with
cells similar to those of the Plantae, animalia, and Fungi Kingdoms
5. Fungi: (Pg. 63)
The kingdom Fungi includes multicellular mushrooms and molds
and single-celled yeasts
6. Archaea: (Pg. 63)
The kingdom Archea includes microscopic single-celled organisms
with a distinctive dell structure that allows them to live in
extreme environments
7. Bacteria: (Pg. 63)
Bacteria includes microscopic single-celled organisms found in
many environments; bacteria can be associated with disease in
other organisms