In comparing two or more organisms our standpoint may be developmental, morphological or physiological. Or, we may strike a middle ground in what is called the morpho-physiological point of view.
Proceedings of the Iowa Academy of Science
©1907 Iowa Academy of Science, Inc.
Conard, Henry S.
"Homology of Tissues of Ferns,"
Proceedings of the Iowa Academy of Science, 14(1), 85-87.
Available at: https://scholarworks.uni.edu/pias/vol14/iss1/8