A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

What causes the star formation in the middle of sand dollars?

Best Answers

The flower or star shaped form on the back (or top) of a sand dollar is formed by the paired holes of specialized tube feet that help with this kind of sea urchins' respiration. read more

The flower or star shaped form on the back (or top) of a sand dollar is formed by the paired holes of specialized tube feet that help with this kind of sea urchins’ respiration. read more

Unlike other urchins, the bodies of sand dollars also display secondary front-to-back bilateral symmetry. The anus of sand dollars is located at the back rather than at the top as in most urchins, with many more bilateral features appearing in some species. read more

Encyclopedia Research

Related Types

Image Answers

Further Research

7 Swinging Sand Dollar Facts
oceanwildthings.com

How Mountains are Formed
www.teachengineering.org

How Sand Dunes are Formed
www.desertusa.com

Legend of the Sand Dollar
www.traditioninaction.org