NAME ____________________________
Period___________
Classification of Living Things Outline
Need for Classification
 Living things have ____________________ in common such as the functions or
activities that are necessary to maintain life.
 However, these functions and activities differ.
 These differences indicate a great variety, called ___________, among living things.
 In order to study living things in an organized and efficient way, biologists find it
necessary to __________ or group organisms in a logical way.
Basis for Classification
 The most common basis for classifying organisms is _________________________.
 Such as the exoskeleton, appendages, organs, or cellular structures
(chloroplasts, nuclei).
 Biochemical and genetic similarities, in patterns of embryological
development, and fossil evidence are also used for _____________________.
Modern System of Classification
 Our modern classification system assumes that present day forms of life developed
from _________________.
 The ____________________ is the largest classification group.
 Today, most biologists group organisms into a _______________ system:
 Monera, Protista, Fungi, Plant, and Animal.
Classification Standards
• The five-kingdom system is based on the following ____________________:
1. The presence or absence of a nuclear membrane within the cell.
2. Whether the organism is unicellular (one-celled) or multicellular (manycelled).
3. Type of nutrition.
Subdivisions of Kingdoms
 The members of each kingdom share some major _________________, but they are
also ___________________.
 Therefore, each kingdom is subdivided into ____________ and ___________
groups.
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 _____________ – Includes all organisms of the same kind.
Carolus Linnaeus
 A Swedish naturalist in the Mid 1700’s devised the most commonly
used ______________________ system.
 This system separates __________________ into smaller and smaller
subgroups based on similar ________________________.
Scientific Names
 Common names are not used, ____________ is used for scientific naming
because it is the universal language of science and it is accepted
worldwide.
 Binomial Nomenclature –
 These names are written in italics.
 The genus name is capitalized and the species name is not capitalized.
 Homo sapiens………….
 Canis familaris...............