Phylum Porifera | Invertebrates | Unit 5. Biological Diversity
Chapter: Phylum Porifera
Collection: Invertebrates
Unit 5. Biological Diversity
Book: Biology
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Animals included in phylum Porifera are Parazoans because they do not show the formation of true tissues (except in class Hexactinellida). These organisms show very simple organization, with a rudimentary endoskeleton. Sponges have multiple cell types that are geared toward executing various metabolic functions. Although these animals are very simple, they perform several complex physiological functions.
00:00 Phylum Porifera
01:00 Morphology of sponges
07:22 Physiological processes in sponges
07:41 Digestion
09:19 Reproduction
12:04 Locomotion
12:57 Section summary
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