What organs are called homologous? What are similar?

Homologous organs are organs that are SIMILAR in origin and structure, but at the same time perform DIFFERENT functions.
For example: the wings of a bird and the legs of a horse are homologous organs.
Similar organs are organs that are DIFFERENT in origin and structure, but at the same time perform the same functions.
For example: tendrils of grapes and tendrils of peas.



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