All plants have a characteristic life cycle that includes alternation of generations.
Descendant includes descendants of all generations.
All plants have a characteristic life cycle that includes alternation of descendants.
All of what have a characteristic life cycle that includes alternation of descendants?

[A] Conifers
[B] flowers
[C] apples
[D] plants
[E] amoeba
[F] Trees
[G] Oak
[H] Spruce