Question

what is the term for a group of organisms that consist of a common ancestor and all its descendants?
polyphyletic group
paraphyletic group
clade
ancestry

Explanation:

• A polyphyletic group includes organisms from different ancestors, so it's incorrect.
• A paraphyletic group includes a common ancestor and some, but not all, descendants, so it's incorrect.
• A clade is defined as a group of organisms that includes a common ancestor and all its descendants, which matches the description.
• Ancestry refers to the line of descent, not a group with a common ancestor and all descendants, so it's incorrect.

Answer:

C. Clade