Fact 1: Adult sponges produce eggs and sperm.

Fact 2: Most sponges are hermaphrodites, each individual bearing both eggs and sperm.

Given the two facts above, answer the question "what are sponges?" with the following options: 
- protect them
 - storing water
 - fertile
 - barnacles
 - hydrate their cells
 - dangerous
 - hermaphrodites
 - important habitats


 

       hermaphrodites  