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The Sponges Phylum Porifera 1. 1.Hewan multiselluler 2.Dari bahasa latin, porus: lubang kecil, ferre: membawa 3.Sebagian besar hidup dilaut kedalaman.

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Presentasi berjudul: "The Sponges Phylum Porifera 1. 1.Hewan multiselluler 2.Dari bahasa latin, porus: lubang kecil, ferre: membawa 3.Sebagian besar hidup dilaut kedalaman."— Transcript presentasi:

1 The Sponges Phylum Porifera 1

2 1.Hewan multiselluler 2.Dari bahasa latin, porus: lubang kecil, ferre: membawa 3.Sebagian besar hidup dilaut kedalaman 3,5 m, sebagian kecil di air tawar 4.Bentuknya beraneka macam dan warnanya bervariasi: merah, kuning, biru, violet Phylum Porifera 2

3 3 Yellow Tube Sponge Black-ball sponge Erect Rope Sponge

4 Phylum Porifera 4

5  Spongocoel dilindungi oleh: 1Epidermis : lapisan luar, pipih disebut pinakosit, memiliki lubang disebut ostium, dan selnya disebut porosit. Phylum Porifera5

6 2. Koanosit, disebut sel leher Phylum Porifera6 Choanocytes

7 3. Mesoglea : lapisan gelatins, nonseluler berisi a. arkeosit: reproduksi sel, membentuk sel tunas/gamet, mengganti sel yang rusak b. Skleroblast: untuk membentuk spikula c. Amebosit: mengambil dan mengeluarkan makanan yang telah dicerna di koanosit Phylum Porifera7

8 8

9

10 Spongocoel  Ostia  Osculum Phylum Porifera10

11  Choanocytes: (collar cells) act as a pump to bring water into the sponge Phylum Porifera11

12  Collagen is found between the inner canals and chambers ◦ Mesohyl  Ameboid cells located in the mesohyl, have different roles ◦ Archeocytes ◦ Sclerocytes Phylum Porifera12

13 13

14  Collagen is stiffened by adding microscopic mineral accretions or additional protein fibers (spongin) or both. ◦ Spicules: skeleton structures, made of calcium carbonate (CaCO 3 ) or silicon dioxide (SiO 2 ). Phylum Porifera14 Spicules

15 Sponge Types

16  Asexual budding  Regeneration: can regenerate from broken pieces  Sexual ◦ Usually hermaphroditic with male and female cells scattered throughout the connective tissue. Phylum Porifera16

17  Neighboring sponges are fertilized by sperm entering through the ostia ◦ Ciliated mouth less larvae (parenchymella) is released. Phylum Porifera17 Parenchymella

18  Phylum Porifera ◦ Class Calcarea ◦ Class Demospongiae ◦ Class Hexactinellida ◦ Sclerospongiae is no longer considered a class Phylum Porifera18

19  Have spicules made of calcium carbonate  Mostly small in size (<15 cm.), and form irregular masses  Never contain spongin, restricted to shallow water, and strictly marine Phylum Porifera19

20  Have spicules made of silicon dioxide (SiO 2 ) or spongin or a combination of both  Most sponges belong to this class (90%) ◦ Nearly all are leuconoid body type  Mostly found on the continental shelf  Spongia spp. (Bath sponge) Phylum Porifera20

21  Spicules are made of silica  Usually found in deep water on soft substrates in the tropics 200-1,000m.  Spicules are six pointed and have a lattice-like structure  Cup, vase or urn shape Phylum Porifera21 Euplectella (Deep sea Glass sponge)


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