dorsiventral symmetry造句

Molecular genetics has also shed light on the relation between radial symmetry ( characteristic of stems ) and dorsiventral symmetry ( typical for leaves ).
It is a medium-sized plant, growing to about 4 5 feet ( though 10 12 feet in a sheltered place at Arduaine Garden in Argyll, Scotland ) and even though the rhizome does not grow a trunk, it is clearly related to the other tree ferns due to features that were apparently already present in their common ancestor, like " " pneumathodes " ", and the rhizome which changed from the dorsiventral symmetry typical of the other ferns, to a radial symmetry typical of tree ferns.
It's difficult to find dorsiventral symmetry in a sentence. 用dorsiventral symmetry造句挺难的