Section 1
Phylum Porifera
Book
Version 32
By Boundless
By Boundless
Boundless Biology
Biology
by Boundless
3 concepts
Phylum Porifera
Sponges lack true tissues, have no body symmetry, and are sessile; types are classified based on presence and composition of spicules.
![Thumbnail](../../../../../../figures.boundless-cdn.com/20763/square/figure-28-01-02.jpg)
Morphology of Sponges
Instead of true tissues or organs, sponges have specialized cells that are in charge of important bodily functions and processes.
![Thumbnail](../../../../../../figures.boundless-cdn.com/20776/square/orifera-body-structures-01.jpg)
Physiological Processes in Sponges
Sponges are sessile, feed by phagocytosis, and reproduce sexually and asexually; all major functions are regulated by water flow diffusion.