Answer :

Homologous organs are defined as the structures that differ in appearance or perform different functions but have similar basic structure or developmental origin.The presence of a structure or physiological process in an ancestral organism, which has become greatly modified in more specialized, apparently related organisms , may be interpreted as indicating a process of descent by modification. In this case the function of organs diversified and became different from the common ancestor.

View image keerthika1998lekha
Evolutionists maintain that all living things with similar structures and organs share an evolutionary relationship. One of the perfectly clear examples that invalidate this claim, known as homology, is the octopus eye. (See Homology.) According to evolutionists’ imaginary tree of life, octopi —being mollusks—are one of the life forms furthest removed from human beings. Although the octopus and man are very different life forms, between which no so called evolutionary relationship can exist, their eyes have exactly the same structure! This is a clear sign that similar structures do not constitute proof of evolution.