In the figure above,the hierarchically arrayed groups indicated by the shaded grey boxes are called
A)nodes.
B)clades.
C)species.
D)genera.

Question

In the figure above,the hierarchically arrayed groups indicated by the shaded grey boxes are called
A)nodes. 
B)clades. 
C)species. 
D)genera.

Quizplus · Accepted Answer

The hierarchically arrayed groups indicated by the shaded grey boxes are called clades. Clades are groups of organisms that include an ancestor and all of its descendants. This classification is based on evolutionary relationships rather than superficial similarities.

Option A: Nodes refer to the points where the branches of a phylogenetic tree split.

Option C: Species are groups of individuals that can interbreed and produce offspring that can also reproduce.

Option D: Genera are groups of species that share a common ancestor and have similar physical characteristics.

In the Figure Above,the Hierarchically Arrayed Groups Indicated by the Shaded