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Activity 1:Classification,
Nomenclature, andIdentification
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BIODIVERSITY
The number of speciesand their range ofbehavioral,
physiological,ecological, and other
adaptations in an area.
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SYSTEMATICS
Scientific study of thekinds and diversity oforganisms and
therelationships amongthem.
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Aspects of Systematics
PHYLOGENY
evolutionary history and
relationships of organisms
- Hypothesis about which species
are closely related and in whatorder related species
evolved.
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CLADOGRAM
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Aspects of Systematics
TAXONOMY is the:
Description
Identification
Classification, and;
Nomenclature of organisms
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Activities in Taxonomy
CLASSIFICATION Ordering of populations at all levels
by INDUCTIVE procedure
CATEGORY- rank of level in ahierarchic classification
TAXA/ TAXON taxonomic groupthat is sufficiently distinct to
be
assigned a definite group of category.
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Example: Rice
Category: TaxaKingdom: Plantae
Division: Magnoliophyta
Class: LiliopsidaOrder: Poales
Family: Poaceae
Genus: OryzaSpecies: Oryza sativa
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NOMENCLATURETheory and practice of naming
Common/ vernacular names(problematic: changes in different
areas/social group)
Scientific names (in latin;UNIVERSAL)
Activities in Taxonomy
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1700s polynomial
European honeybee
Apis pubescens, thorace
subgriseo, abdomine fusco,pedibus posticis glabris
utrinque margine ciliates
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RULES in NOMENCLATURE Indicated by the ICN (International Code
of
Nomenclature)
Binomial/ trinomial : generic name, specificepithet, author:
Oryza sativaL.
Difference between plants and animals: inplants, TAUTONOMY is
NOT allowed(tautonomy= repetition of words: Chanoschanos)
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Genus generic name (noun)
Species specific epithet (adjective)
Based on/ describes: habitat, location, principal
characteristics, discoverer (named after)
Allium cepa(onion) with a bulb which is amodified leaf
Uncaria philippinensis(sabilan) found in thePhilippines
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IDENTIFICATION
Different ways:
Consulting an expert Comparing illustrated manuals/
encyclopedia
Visiting a herbarium Using identification keys
Activities in Taxonomy
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DICHOTOMOUS KEY
Has 2 contrasting/ opposingcharacters (COUPLETS)
With a lead character (best contrasting
character)
Taxonomic character features: form,
structure, appearance, behavior
Diagnostic/ Key character mostdistinguishing feature
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LABWORK!
