Question

Most sea cucumber species feed by pushing tentacles into a source of organic particulate matter and then putting the tentacles in their mouths to wipe off the food source from the sticky surface A close look at the structure of the tentacles reveals that they are actually highly modified forms of what typical echinoderm structure? Fill in the blank

Answer 1

Tube feet

Sea cucumbers are part of a larger animal group called echinoderms. Their body shape is similar to a cucumber, but they have small tentacle-like tube feet that are used for locomotion and feeding.