Br: Cladograms and Dichotomous Keys

Front

What is a cladogram?

Back

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

Front

What is a dichotomous key?

Back

A dichotomous key is a tool that allows the identification of organisms by answering a series of questions that lead the user to the correct name of a given item.

Front

What characteristics are used to identify the American Robin?

Back

Head color, Beak shape, and Beak Color.

Front

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

Back

Crayfish.

Front

What features might indicate a Spruce tree?

Back

Large brown cones and single sharp needles.

Front

What common characteristic do all animals to the right of the hagfish have?

Back

Jaws.

Front

What is the significance of using a dichotomous key in biology?

Back

It helps in the accurate identification of species based on observable traits.

Front

How do cladograms represent evolutionary relationships?

Back

Cladograms use branching diagrams to show how species diverged from common ancestors.

Front

What is the role of physical characteristics in constructing a cladogram?

Back

Physical characteristics are used to determine the similarities and differences that indicate evolutionary relationships.

Front

What is an example of a characteristic used in a dichotomous key?

Back

Leaf shape, flower color, or bark texture.