Differentiation and growth of the structure of an organism (or a part of an organism) WordNet 3.0 & Open English WordNet

Morphogenesis is the biological process that causes a cell, tissue or organism to develop its shape. Wikipedia

The biological process that causes an organism to develop its shape Wikipedia Disambiguation

One of three fundamental aspects of developmental biology along with the control of cell growth and cellular differentiation. It is concerned with the shapes of tissues, organs and entire organisms and the positions of the various specialized cell types. OmegaWiki