In order to survive, organisms must maintain constant interior conditions in a changing environment.
Presentation adapted from:
Sponges (Chapter 26.2)
The Lost Journal Volume 31
BIOLOGY 112 SPONGES AND CNIDARIANS. SPONGES Phylum Porifera Multicellular and heterotrophic No cell wall and few specialized cells Live their entire life.
Presentation adapted from: Salmon in the Classroom Workshop: Wolf Lake State Fish Hatchery November 8th, 2011 Kevin Frailey, DNR Education Services Manager.
