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# Some other information to know about trees.   *  ***Branch rotation***. Each node in a tree can be rotated/spun around without changing the meaning of the tree. This is known as “branch rotation”. *  ***Clade***. A group of organisms consisting of a single node and all the descendants of that node in a tree and nothing else. *  ***Monophyletic group. group***.  A clade. ## Support for trees.