echinoderms. spiny skin spiny skin radial symmetry radial symmetry water vascular system water...

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Echinoderms Echinoderms

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Page 1: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system

EchinodermsEchinoderms

Page 2: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system

Spiny skinSpiny skin Radial symmetryRadial symmetry Water vascular Water vascular

systemsystem

Page 3: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system

Water IS their blood!Water IS their blood!

Water vascular Water vascular system- system- respiration, respiration, circulation, circulation, movement.movement.

Madreporite- Madreporite- connects the ring connects the ring canal to the canal to the outside.outside.

Page 4: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system

ReproductionReproduction

SexualSexual No visible No visible

difference difference between M and F!between M and F!

AsexualAsexual Many (NOT ALL) Many (NOT ALL)

species can species can regenerate missing regenerate missing body parts body parts

Tear 1 sea star in half Tear 1 sea star in half and with some luck and with some luck both parts of the both parts of the animal can animal can regenerate the regenerate the missing pieces.missing pieces.

Page 5: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system
Page 6: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system

Tube feet- movement, feeding, Tube feet- movement, feeding, excretion.excretion.

Feeding- sea stars push out Feeding- sea stars push out stomach and enzymes break down stomach and enzymes break down the animal.the animal. Think “milkshake”Think “milkshake”

Excretion- cellular through tube Excretion- cellular through tube feet(ammonia), solid through anus.feet(ammonia), solid through anus.

Page 7: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system

Groups of Groups of EchinodermsEchinoderms

Page 8: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system

Sea Urchins and Sand Sea Urchins and Sand DollarsDollars

Large solid platesLarge solid plates Most eat algaeMost eat algae

Page 9: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system
Page 10: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system
Page 11: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system

Brittle StarsBrittle Stars

Found on coral Found on coral reefsreefs

Can shed an arm Can shed an arm to escapeto escape

Filter feeders Filter feeders                                          

                                                 

Page 12: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system
Page 13: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system

Sea CucumbersSea Cucumbers

“ “ Moving pickles”Moving pickles” Detritus feedersDetritus feeders

Page 14: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system

Sea cucumberSea cucumber

Page 15: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system
Page 16: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system
Page 17: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system

Sea StarsSea Stars

Most are Most are carnivorescarnivores

Eat bivalvesEat bivalves Can repair Can repair

themselvesthemselves

Page 18: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system

Tube feet in living sea star sea star hunting scallops and clam

s

Page 19: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system
Page 20: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system

Sea Lilies and Feather Sea Lilies and Feather StarsStars

Filter feedersFilter feeders Live in the tropicsLive in the tropics

Page 21: Echinoderms. Spiny skin Spiny skin Radial symmetry Radial symmetry Water vascular system Water vascular system

Feather StarFeather Star