Fact 1: Adult sponges are sessile. Fact 2: Sessile Attached permanently, immobile. Given the two facts above, answer the question "What is true of all adult sponges?" with the following options: - they are immobile. - at or near the margins - They may not survive. - water conservation - Light passing through water - competition - To keep their body heat. - permineralization
The answer to this question is:
they are immobile.