You are presented with the quiz "What is a single organism that produces both seed and eggs?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "adult sponges produce eggs and sperm" and "most sponges are hermaphroditic, meaning that a single organism has both eggs and sperm". 

So, what's the best answer to the question?


 

    sponges       