Fact 1: Adult sponges produce eggs and sperm.

Fact 2: Sperm and eggs are cells known as gametes.

Given the two facts above, answer the question "what do adult sponges produce?" with the following options: 
- Energy
 - heat
 - gametes
 - alveoli
 - fertile
 - food
 - white
 - homogenous


 

   gametes      