Essay on Classification of Organisms

Essay on Classification of Organisms

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Taxonomy is the study of the classification of organisms, it is the
organization (separation) of all the known organisms into groups based
on their shared features, these groups are then organized into
further, larger groups. These groups are all referred to as Taxa
(Taxon - singular). The taxa used in taxonomy are: Species, Genus,
Family, Order, Class, Phylum and kingdom, each group getting larger
going form species to kingdom.



Taxa Used in Taxonomy
=====================


Species
-------

Organisms That are able to interbreed, producing fertile offspring are
considered to be of the same species, this taxon can also be divided
into subspecies and then strains (to give more finite classification).

Genus

A groups of organisms that are similar and fairly closely related.

Family

A group of organisms, which are of apparently, related Genera.

Order

A group of similar, or apparently related families.

Class

A grouping of related orders within a phylum.

Phylum

Organisms with very basic similarities, which subtle similarities,
that appears to have been constructed on the same 'plan'.

Kingdom

The largest group, which includes animals, plants, fungi…Subdivided
into Prokaryota (single celled organisms) and Eukaryota (multicellular
organisms).

Some groups are so large that they become apparently meaningless, when
this happens they can be divided into more specific subdivisions.

For individual species the Binomial system is used to name organisms.
This system makes use of the Species and Genus taxa, by giving every
species 2 names, the first identifying it's genus, the seco...


... middle of paper ...


...ful, so their population exploded.
They were rounded up and shot in masses, but this had very little
effect on their population, eventually the viral disease myxomatosis
was introduced into the rabbit population, by man, through infected
fleas (the carriers of the disease), since the rabbit population was
so dense the disease spread quickly and massive numbers of rabbits
were killed, the disease became the only biotic environmental factor
affecting their population, but it still greatly decreased their
population size.

This case gives a clear example of how environmental factors limit
population sizes, if humans were not affected by famine, drought and
disease our population would balloon out of control and measures would
have to be taken (like those in place in china) to limit the growth of
our population.



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