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Principles of classification
as Lantana camara, Hibiscus sp. comparing the unidentified organism with
with red flowers, panicum species, authentically identified specimen stored
delonix Regia, jatropha curcas seeds in museums for animals or herbaria for
and stem cuttings. plant specimens. The other way is to use
(a) Write correctly the names of the a local field guide in which pictures and/
species to be ordered by the student or drawings of organisms coupled with
FOR ONLINE READING ONLY
before submitting to TTSA. explanations are available for comparison.
(b) Using your knowledge on the rules Moreover, taxonomic keys may be used for
of binomial nomenclature explain identification of unidentified organisms.
the rules that were violated in the
names written by the student. Taxonomic keys are tools used by
(c) Provide a comprehensive list of taxonomists for a quick identification of
the species names to be submitted organisms. The identification is based on
to TTSA. contrasting phenotypic features, which
are also known as morphological features.
2. Explain the following:
These include features such as hairs,
(a) Nomenclature stipules, shape, number of appendages, and
(b) Binomial nomenclature segments. In order to identify an organism
using taxonomic keys, all readily observable
3. Citing examples of species from your features of the unknown organisms are
local environment, outline the rules recorded first. These are later matched with
used in binomial nomenclature. diagnostic features of a named taxon.
4. Explain the significance of scientific
naming of organisms. The diagnostic features are characteristics
unique to a particular taxon or rank. They
2.5 Taxonomic keys differ from those of an organism belonging
to a different taxon. Diagnostic features
Task 2.6
From the library and internet sources, depict natural phylogenetic or evolutionary
search for videos or images that show relationship, and they are reflective of
taxonomic keys. Note what you will features used in both artificial and natural
observe. systems of classification.
There are several ways of identifying an Taxonomic keys enable organisms to be
unidentified organism. Identification is identified into their appropriate taxon. It
naming an organism based on the existing also increases familiarity of taxonomist with
classfication. The easiest way is by the identified organisms; since it involves
consulting and directly asking an expert careful investigation on the presence
(taxonomist) with profound knowledge or absence of particular structures and
and experience in identification. Also, by manifestation of the present characteristics.
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