A group that consists of a common ancestor and all its evolutionary descendants is called a (n)

A. clade.

B. outgroup.

C. ingroup.

D. phylum.

E. taxon.

Answer: Option A.

Clade

Explanation:

Clade is also called monopyletic group, this is a group that consist of organisms that evolved from a common ancestor and the evolutionary descendants of that ancestor. Examples of clade group are Eutheria, a mammalian clade, Metateria and group of birds who evolve from common ancestors.

Answer: Option A) Clade

Explanation:

A clade refers to a group of animals or other organisms that have evolved from a common ancestor species. It could have taken several millions of years since the first ancestor lived.

Examples of clade include

- all the birds descended from a common ancestor specie

- all apes descended from a common ancestor specie.

Also, a clade is best identified using a phylogenetic tree.