During regeneration, modification of an organ to another is known as
A.Morphogenesis – Formation of organs from the embryo is called Morphogenesis or organogenesis.
B.Epimorphosis - Regeneration of limbs or tail is an epimorphosis regeneration. Replacement of lost organ of the body by proliferating new cells from the surface of the injured part is called Epimorphosis.
C. Morphallaxis - The reconstruction of an entire animal from a small fragment by reorganizing the existing cells, is called Morphallaxis.
D. Accretionary growth – It involves a cell secretion to increase the volume of the extracellular spaces. Many adult tissues will only divide when induced by injury or other stimuli. It occurs in cartilage and bone.
So, the correct option is ‘Morphallaxis’.