Accessory Structure written by Psychology Roots Published: February 15, 2021 233 views 233 Accessory Structure in biology, a structure that assists or can take over the function of another (the primary) structure. FacebookTwitterLinkedinRedditWhatsappTelegramCopy LinkThreadsEmail Psychology Roots Add new comment Leave a Comment Cancel Reply Save my name, email, and website in this browser for the next time I comment. * By using this form you agree with the storage and handling of your data by this website.