Having many pores Simple Animal Phylum Porifera Having many pores Simple Animal
Kingdom Animalia Taxonomy Phylum Porifera Class Hexactinellida Class Calcarea Class Demospongiae Class Hexactinellida
General Characteristics Simplest multi-cellular animals Most are asymmetrical Sessile animals: attached to something most of their lives Filter-feeders: strain the water for nourishment Body openings: Many tiny incurrent pores and one large out current pore Brightly colored to blend into the coral reef
Body Plan No true organs or tissues Made up of many different specialized cells working together in a jelly-like substance Spicules: provide structural support like a skeleton Stolon: the base of the sponge that attaches to rock or coral
Body Form and Function Ostia: tiny pores for incoming water (incurrent pores) Osculum: one or 2 large openings for outgoing water Spongocoel: The large cavity that water circulates through
Body Form and Function Feeding: Filter feed on particles or organisms suspended in water Collar Cells: Flagellated cells that circulate water and trap food particles Amoebocytes: cells that travel around and distribute food to other cells Sponge filtering water
Reproduction and Development Types of reproduction: Both sexual and asexual reproduction Sperm transform from collar cells during the spawning season Sexual Reproduction: Sperm is released into the water by one sponge and taken into the spongocoel of another sponge Sponge spawning
Reproduction and Development Asexual Reproduction: fission or budding
Ecological Relationships Provide food for many other animals Provide shelter for many other animals Have mutualistic relationships with photo synthesizers to provide more oxygen in the oceans
Class Calcarea Balloon sponges Have star-shaped spicules made of calcium carbonate Mesh-like structure All live in saltwater Calcium carbonate: a carbon/calcium substance found in animal skeletons
Class Calcarea
Class Calcarea
Class Hexactinellida Glass sponges All live in salt water Have six-sided spicules made of silicon
Class Hexactinellida
Class Hexactinellida
Class Demospongiae Common sponges Includes 80% of all Porifera species Have spicules made of silicon and spongin Live in fresh or saltwater
Class Demospongiae
Class Demospongiae