Dichotomous Key and Cladograms

Front

What are the 8 levels of classification in biology from broadest to most specific?

Back

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

Front

What is a cladogram?

Back

A diagram that shows the evolutionary relationships among various biological species based on similarities and differences in their physical or genetic characteristics.

Front

According to a cladogram, which organisms are least related?

Back

Organisms that are further apart on the cladogram are least related.

Front

What do we look at when using a dichotomous key to identify organisms?

Back

Physical features of the organisms.

Front

What is the first part of a scientific name called?

Back

Genus.

Front

What is the second part of a scientific name called?

Back

Species.

Front

What is the purpose of a dichotomous key?

Back

To help identify organisms based on a series of choices that lead to the correct name.

Front

What is the difference between a genus and a species?

Back

Genus is a group of related species, while species is the most specific level of classification.

Front

Give an example of two organisms that belong to the same genus.

Back

For example, Panthera leo (lion) and Panthera tigris (tiger) belong to the genus Panthera.

Front

What type of information does a cladogram provide?

Back

It provides information about the evolutionary history and relationships among species.