the useless organs once had function in the ancestral body......but now they are not in use and are not that important however we can survive without them.
hope I helped u!!!!!
1 5 1

This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Animals have certain useless tissues and not organs.
These tissues are the undeveloped one that leads to outgrowth.
But all organs are surely useful for any animal.