How is a clade differentiated from another clade?
A clade is a biphyletic group in which there are two branching points for
each group of organisms.
A clade is a monophyletic grouping in which all the organisms stem from the
same branching point.
O A clade includes only the class and phylum for a group of organisms.
A clade represents a significant divergence in evolutionary history and
covers all organisms involved in that divergence.