Jain Biology: 2. Phylum Porifera:

All the sponges are included in this phylum; aquatic animals mostly marine; though multicellular are incapable of any movement; cells are not organized into tissues and organs. There is neither a mouth nor a digestive tract; reproduction is asexual (by budding or by formation of gemmules) and sexual.

Sources
Edited by:
Prof. Muni Mahendra Kumar

© JAIN VISHVA BHARATI UNIVERSITY
Ladnun-341 306 (Rajasthan, India)

First Edition: 2008 Printed at: Shree Vardhman Press, Naveen Shahdara, Delhi- 110032

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