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Most Important Reactions in Organic Chemistry

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Vestigial Organs in Plants and Animals: Complete Guide with Tables

Vestigial organs are fascinating remnants of evolution. They are structures that once served important functions in ancestors but have become reduced, nonfunctional, or repurposed over time. Both animals and plants have vestigial organs that highlight their evolutionary history. In this article, you’ll find comprehensive tables listing well-known vestigial structures in both animals and plants. Vestigial Organs in Animals Animals show a wide variety of vestigial traits — from reduced bones to unused muscles. These structures provide some of the clearest evidence of evolutionary change. Animal Group Vestigial Organ/Structure Function in Ancestors Current Status/Use Humans Appendix Cellulose digestion Minor immune role, mostly redundant Humans Wisdom teeth (third molars) Helped chew coarse plant matter Often problematic; impacted Humans Coccyx (tailbone) Tail for balance & mobility No external tail; muscle attachment Humans Auricular muscles (ear-wigg...
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