10.2 Keys and Trees Review

Front

What is the purpose of a dichotomous key?

Back

To identify organisms.

Front

What does the term 'dichotomous' mean?

Back

Divided into two parts.

Front

What is a cladogram?

Back

A diagram that shows the evolutionary relationships among various biological species.

Front

Which organism is most distantly related to humans according to a cladogram?

Back

Crayfish.

Front

What do all species in a common ancestor share?

Back

Common ancestor.

Front

What is the significance of a common ancestor in evolutionary biology?

Back

It indicates that different species have evolved from a shared lineage.

Front

What is the role of phylogenetic trees in biology?

Back

To illustrate the evolutionary relationships between species.

Front

What is the difference between a cladogram and a phylogenetic tree?

Back

A cladogram shows relationships based on shared characteristics, while a phylogenetic tree includes time and evolutionary distance.

Front

What is an example of a dichotomous key in use?

Back

Identifying plant species based on leaf shape.

Front

How can a cladogram help in understanding species evolution?

Back

It visually represents how species are related and their evolutionary history.