5 KINGDOM : ANIMALIA The Sponges

Kingdom Animalia(Metazoa) 1. Mesozoa 2. Parazoa 3. Eumetazoa

Mesozoa 1. Phylum Mesozoa

Mesozoa

Parazoa Parazoa Phylum Placozoa Phylum Porifera : Sponges

Trichoplax adhaerens

Sponges 1. Ostia 2. Oscula 3. Spicule 4. Spongin

Spicule

Spicule

Spongin

Types of Cells Mesohyl Pinacocyte Myocyte Choanocyte Archaeocyte / Sclerocyte / Spongocyte Collencyte / Lophocyte

Types of Cells

Choanocyte

Types of Canal Systems Asconoid Flagellated Spongocoels /Leucosolenia Syconoid Flagellated Canals/ Sycon Leuconoid Flagellated Chambers/Euspongia

Types of Canal Systems

Wall of sponge Sycon

Radial canals

Sponge Physiology Intracellular Digestion

Sponge Reproduction 1. External Bud 2. Internal Bud / Gemmule 3. Viviparous 4. Sperm / Oocyte 5. Oviparous Regeneration and Somatic Embryogenesis

Gemmule

Gemmule

Sponge Classification Class Calcarea / Sycon / Leucosolenia Class Hexactinellida / Euplectella Class Demospongiae / Spongilla Class Sclerospongiae

Development of Demosponges

Glass Sponge Skeleton

Euplectella

Venus Flower Basket Sponge

A building like Euplectella

Glass Sponge Spicules

Spongilla

Spongilla

Bath Sponge

Types of Spicules & Sponges