Question to you: Mature sponges produce what?
Options:
- (A) eggs and sperm
- (B) live young
- (C) just sperm
- (D) Organic compounds
- (E) Chemical energy
- (F) just eggs
- (G) heat energy
- (H) gastropod shells.
Let's reason step-by-step:
Adult sponges produce eggs and sperm. Adults are sexually mature. Mature sponges produce eggs and sperm. Final answer: (A).