Fact 1: Adult sponges produce eggs and sperm.

Fact 2: BTW, a gamete is like an egg or sperm.

Given the two facts above, answer the question "What do adult sponges produce?" with the following options: 
- human cells
 - fertile
 - engines
 - gametes
 - Energy
 - food
 - white
 - backbones


 

    gametes     