Exam 15: Exploring Biological Diversity

Why was the classification scheme devised by Linnaeus such an improvement over those used in his day?

A cladistic analysis will group birds,crocodiles,and dinosaurs together among the reptiles because they share many ____________ characters.

Extreme thermophiles belong in what group?

In classification,the taxonomic group just below family is

Biologists currently recognize ______ different kingdoms.

A multi-level system of grouping allows scientists to ___________ organisms.

Mitochondria and chloroplasts are eukaryotic organelles that appear to have arisen by a process called ____________.

_______________ is the construction of phylogeny based on descent.

Mitochondria are descendents of __________ and chloroplasts are descendents of _________.

The highest,most inclusive level of our current classification scheme is _________________.

In the scientific name Homo sapiens,"Homo" indicates the _________ of the organism,while "sapiens" indicates its __________.

Which of the following domains each contain only one kingdom?

Cladograms will group birds with reptiles because these groups share

How many different species of organisms do scientists believe exist on earth today?

A _________ is a group of organisms related by descent.

The taxonomic level just below kingdom is ____________.

One of the first people to suggest a general definition for a species was

Which of the following is not an example of a member of Archaea?

Traditional ___________ constructs phylogenies with "weighted" characters.

Which kingdom only contains multicellular organisms?