Answer:
Cell differentiation is when a cell becomes specialized to perform a specific function (eg it becomes a nerve cell). Most cell differentiation occurs in the embryonic stage; some still occurs in the adult stage.
Cell elongation is when the cell elongates and becomes larger. This occurs in the root of plants.
They both have chlorophyll so they both do photosynthesis. <span />
The two muscles of the trunk are Abdominal external oblique
muscle and Abdominal internal oblique muscle. Their origin and function are in Abdominal
external oblique muscle ; lower 8 costae, ligamentum iguinali, rotates torso
and Abdominal internal oblique muscle;
inguinal ligament, sternum & inferior ribs, compresses abdomen.