Phylum porifera

Phylum porifera

1. Porous body

2. Body wall is made up of calcium

3. spongocoel

   • Hollow space present in animals body

4. Sessile

   • Immotile

5. Osculum

   • Osculum is used for exit water

6. Ostia

   • Ostia is nothing but pores present in animals body.Useful to allow water in to the animals body.

7. Bath spong

   • economic importance of sponges. It is used as bath sponge.