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9 Cards in this Set

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Describe what it means for a species to be "known" to science.
A known species has a published written account and has a deposited holotype specimen.
Approximately how many species are known to science today, and what is the distribution?
Approximately 1.8 million species are known to science.

751,000 Insects
285,000 Vascular Plants
281,000 Non-insect animals
69,000 Fungi
30,800 Protozoans
26,900 Algae
16,600 Bryophytes
4800 Bacteria
1000 Viruses
Which group of organisms is the most diverse?
Insects
Which group of organisms has been the most thoroughly catalogued?
Vertebrates
Which group(s) of organisms continue to yield a high number of new species?
Insects and Arachnids
How many species are estimated to exist on Earth?
5-30 million species
Name and describe the three basic ways in which a new species is found.
Discovered: A species has never been seen before is found and described
Recovered: A species that has already been collected but has not described to science undergoes formal analysis and publishing
Extrapolated: A species thought to be part of another species is reclassified based on new information
What is a cryptic species?
A species that is anatomically identical to another species but displays genetic and/or behavioral differences
Define Holotype and Allotype
Holotype: A single physical example of a species that serves as the template for identifying members of said species
Allotype: A physical example of a species that is the opposite sex of the hollotype