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Sponges. Phylum: Porifera. Sponge Characteristics. Simplest animal Live in all oceans but prefer shallow tropical waters. Sessile Asymmetrical body plan Filter feeders – can filter several thousand liters a day. Sponge Anatomy. Osculum – water out Pores – water in

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Sponges

Sponges

Phylum: Porifera


Sponge characteristics
Sponge Characteristics

  • Simplest animal

  • Live in all oceans but prefer shallow tropical waters.

  • Sessile

  • Asymmetrical body plan

  • Filter feeders – can filter several thousand liters a day.


Sponge anatomy
Sponge Anatomy

  • Osculum – water out

  • Pores – water in

  • Collar cells (chanocytes) – filter food particles


2 main types of skeletal tissue
2 Main types of “Skeletal” Tissue

  • 1. Spicule – a spike shaped structure made of calcium carbonate

  • 2. Spongin – a soft protein, tough elastic fibers.



Types of sponges
Types of Sponges

1. Encrusting – Flat – found in turbulent waters

2. Tubular – Tall – found in calm waters

3. Boring – make holes in whatever they are attached to

4. Pecten – found on living shellfish