Hermaphrodite Reproductive Systems: Simultaneous vs. Sequential Function

Yes, in simultaneous hermaphrodites, both male and female reproductive systems are active at the same time, and an individual can produce both sperm and eggs. However, in sequential hermaphrodites, the reproductive systems are not active simultaneously. Instead, an individual may start as one sex, such as a male, and later transition to the other sex, becoming a female. In this case, only one reproductive system is active at any given time.