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Spiny skin Radial symmetry Water vascular system
Form and Function Water vascular- respiration, circulation, movement.Madreporite- connects the ring canal to the outside.
Tube feet- movement. Feeding- sea stars push out stomach and enzymes break down shells. Excretion- cellular through tube feet(ammonia), solid through anus. External fert.
Groups of Echinoderms
Sea Urchins and Sand DollarsLarge solid plates Most eat algae
Brittle Stars Found on coral reefs Can shed an arm to escape Found on coral reefs Can shed an arm to escape Filter feeders
Sea Cucumbers “ Moving pickles” Detritus feeders
Sea Stars Most are carnivores Eat bivalves Can repair themselves
Sea Lilies and Feather StarsFilter feeders Live in the tropics
Feather Star (Note the depth)
Echinodermata Spiny Skinned.
Vocabulary 0ssicle = protective spines on a sea star Ampulla = a bulb-like sac at the base of a tube foot that functions in movement Bipinnaria =free.
Echinoderms “Life with Spiny Skin”. Worms, mollusks, and arthropods all have bilateral symmetry. Worms, mollusks, and arthropods all have bilateral symmetry.
Gabriel Dominguez Marisa Ramunas Biology – Period 8 ECHINODERMS.
Phylum Echinodermata Unit 4.
Echino = “spiny” Dermis = “skin”
Echinoderm Characteristics Copyright © McGraw-Hill Education Echinoderms are Deuterostomes Echinoderms are deuterostomes – a major transition in the phylogeny.
Sea Star Pre-lab Questions
23.6 Echinoderms KEY CONCEPT Echinoderms are on the same evolutionary branch as vertebrates.
Phylum Echinoderms. Invertebrates EchinodermsEchinoderms Characteristics of Phylum:Characteristics of Phylum: –Name means "Spiny Skin" –Endoskeleton –Water.
End Show Slide 1 of 37 Copyright Pearson Prentice Hall 28–4 Echinoderms.
Echinoderms Phylum Echinodermata.
Phylum: Echinodermata Echinos = Spiny Derma = Skin Ata= to bear “bears spiny skin” Zoology Chapter 16.
Phylum Echinodermata Sea stars sea lilies sea urchins feather stars
Copyright Pearson Prentice Hall
Echinodermata “The spiny skinned animals”. Echinoderms The spiny skinned animals include these Classes: 1.Class Crinoidea - the crinoids or “feather stars”
Chapter 28 Arthropods and Echinoderms
Phylum Echinodermata Kingdom Animalia.
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