Question

which of the following is not a clade? select one answer.

Explanation:

A clade is a group of organisms that includes an ancestor and all of its descendants. In a phylogenetic tree, a clade is a monophyletic group. The option with the purple - shaded area does not include all the descendants of the common ancestor (it is a paraphyletic group).

Answer:

The option with the purple - shaded area.