BIO 100 Chapter 12 Diversity of Life

Which group of organisms are most important as decomposers, which decay dead organic matter and recycle its nutrients ?

Bacteria and fungi

The three domains of life are :

Bacteria, Archaea, Eukarya

Which of the following best describes the taxonomic relationship between chimpanzees and humans?

Chimpanzees and humans evolved from a common ancestor.

Which of the following organisms belongs in the same class as humans?

Dog

Which of the following is the correct classification for humans ?

Domain Eukaryea, kingdom animalia, phylum chordata, class mammalia, genus homo.

A phylogenetic tree:

Illustrates a pathway of evolutional history.

Which of the following are correct assumptions regarding cladistics ?

Living things are related by descent from a common ancestor. Speciation occurs by splits of one species into two species, never more than two at a time and at one point in time. Characteristics change enough over time to be considered in a different state. If a character is found in all members of a clade it is shared ancestral character.

Within the domain Eukarya, the four kingdoms are:

Protista, Plantae, Animalia, and Fungi.

Which statement about taxonomic classification is correct ?

Species are the most specific category of classification.

What is the correct relationship among analogous structures ?

They are derived in response to similar environmental pressures but have different ancestors.