ORIGIN OF BIODIVERSITY Flashcards
(34 cards)
a method by which biologists organize living things
into groups. It is also called
Scientific classification/taxonomy
Most diverse group
Insect
Taxon, taxa
1 2
most influential early classification system
was developed
Linnea system of classification
Linnean system of classification developed by
Carolus Linnaeus
a Swedish botanist who lived during the 1700s
is known as the “Father of Taxonomy”
Carolus Linnaeus
1735 published in Carolus Linnaeus
Systema naturae ( system of nature)
is the highest taxon in Linnaean taxonomy,
representing major divisions of organisms.
____ of organisms include the plant and
animal kingdoms.
Kingdom
is a division of a kingdom. in the animal
kingdom include chordates and arthropods
Phylum
is a division of a phylum.
____ in the chordate
phylum include mammals
and birds
Class
is a division of a class.
___in the mammal class
include rodents and
primates.
Order
is a division of an order.
_____in the primate order
include hominids (apes and
humans) and hylobatids
(gibbons).
Family
is a division of a family.
__ in the hominid family
include Homo (humans) and
Pan (chimpanzees
Genus
the lowest taxon in Linnaeus’ system.
____ in the Pan genus include Pan
troglodytes(common chimpanzees)
and Pan paniscus (pygmy
chimpanzees
Species
an English economist.
wrote a popular essay called “On Population”
Thomas malthus
human populations have the potential to grow
faster than the resources they need. When
populations get too big, disease and famine
occur. These calamities control population size
by killing off the weakest people.
On population
theorized the Catastrophism which was based
on paleontological evidence in the Paris Basin.Cuvier was there when he observed something
peculiar about the fossil record.
Georges cuvier
states that natural history has been
punctuated by catastrophic events that
altered that way life developed and rocks
were deposited.
Catastrophism
theorized gradualism which profound
changes to the Earth
James hutton
states that the species appeared by the
gradual transformation of ancestral species
the population of a species is transformed
slowly and progressively into a new species
by the accumulation of micro-evolutionary
changes in the genetic heritage.
Gradualism
states that when certain organs become
specially developed as a result of some
environmental need, then that state of
development is hereditary and can be passed
on to progeny.
Law of use and disuse
Like Lamarck, Darwin assumed that
species can change over time. The fossils he
found helped convince him of that
1
From Lyell, Darwin saw that Earth and its
life were very old. Thus, there had been
enough time for evolution to produce the
great diversity of life Darwin had observ
2
From Malthus, Darwin knew that
populations could grow faster than their
resources. This “overproduction of
offspring” led to a “struggle for existence”
, in
Darwin’s word
3