ECHINODERMSECHINODERMS

ECHINODERMSECHINODERMS

Means spiny skinMeans spiny skin

ECHINODERMSECHINODERMS

Means spiny skinMeans spiny skin include sea stars, sea cucumbers, include sea stars, sea cucumbers,

sea urchins and sand dollarssea urchins and sand dollars

SEA CUCUMBERSEA CUCUMBER

SAND DOLLARSAND DOLLAR

SEA URCHINSEA URCHIN

SEA URCHINSEA URCHIN

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ECHINODERMSECHINODERMS

Means spiny skinMeans spiny skin include sea stars, sea cucumbers, include sea stars, sea cucumbers,

sea urchins and sand dollarssea urchins and sand dollars ENDOSKELETON-internal skeletonENDOSKELETON-internal skeleton

made of spinesmade of spines

ECHINODERMSECHINODERMS

Means spiny skinMeans spiny skin include sea stars, sea cucumbers, include sea stars, sea cucumbers,

sea urchins and sand dollarssea urchins and sand dollars ENDOSKELETON-internal skeletonENDOSKELETON-internal skeleton

made of spinesmade of spines spines made of calcium carbonatespines made of calcium carbonate

ECHINODERMSECHINODERMS

Means spiny skinMeans spiny skin include sea stars, sea cucumbers, include sea stars, sea cucumbers,

sea urchins and sand dollarssea urchins and sand dollars ENDOSKELETON-internal skeletonENDOSKELETON-internal skeleton

made of spinesmade of spines spines made of calcium carbonatespines made of calcium carbonate covered in thin layer of skincovered in thin layer of skin

ECHINODERMSECHINODERMS

Means spiny skinMeans spiny skin include sea stars, sea cucumbers, include sea stars, sea cucumbers,

sea urchins and sand dollarssea urchins and sand dollars ENDOSKELETON-internal skeletonENDOSKELETON-internal skeleton

made of spinesmade of spines spines made of calcium carbonatespines made of calcium carbonate covered in thin layer of skincovered in thin layer of skin

ECHINODERMSECHINODERMS

Usually have 5 arms around a Usually have 5 arms around a central diskcentral disk

ECHINODERMSECHINODERMS

Usually have 5 arms around a Usually have 5 arms around a central diskcentral disk

RADIALLY symmetrical-radiate RADIALLY symmetrical-radiate around a central point (like spokes around a central point (like spokes of a tire)of a tire)

ECHINODERMSECHINODERMS

Usually have 5 arms around a Usually have 5 arms around a central diskcentral disk

RADIALLY symmetrical-radiate RADIALLY symmetrical-radiate around a central point (like spokes around a central point (like spokes of a tire)of a tire)

live only in the oceanlive only in the ocean

ECHINODERMSECHINODERMS

Usually have 5 arms around a Usually have 5 arms around a central diskcentral disk

RADIALLY symmetrical-radiate RADIALLY symmetrical-radiate around a central point (like spokes around a central point (like spokes of a tire)of a tire)

live only in the oceanlive only in the ocean no well defined headno well defined head

ECHINODERMSECHINODERMS

Usually have 5 arms around a central Usually have 5 arms around a central diskdisk

RADIALLY symmetrical-radiate RADIALLY symmetrical-radiate around a central point (like spokes of around a central point (like spokes of a tire)a tire)

live only in the oceanlive only in the ocean no well defined headno well defined head circulatory, respiratory and excretory circulatory, respiratory and excretory

systems missingsystems missing

ECHINODERMSECHINODERMS

Have a nervous system, but no brainHave a nervous system, but no brain

SEA STARSSEA STARS

Common name=star fishCommon name=star fish

SEA STARSSEA STARS

Common name=star fishCommon name=star fish range from 1cm to 1 m in diameterrange from 1cm to 1 m in diameter

SEA STARSSEA STARS

Common name=star fishCommon name=star fish range from 1cm to 1 m in diameterrange from 1cm to 1 m in diameter made of central disk and 5 tapered made of central disk and 5 tapered

RAYS (arms)RAYS (arms)

SEA STARSSEA STARS

Common name=star fishCommon name=star fish range from 1cm to 1 m in diameterrange from 1cm to 1 m in diameter made of central disk and 5 tapered made of central disk and 5 tapered

RAYS (arms)RAYS (arms) CENTRAL DISK-area of mouth and CENTRAL DISK-area of mouth and

stomachstomach

SEA STARSSEA STARS

Common name=star fishCommon name=star fish range from 1cm to 1 m in diameterrange from 1cm to 1 m in diameter made of central disk and 5 tapered made of central disk and 5 tapered

RAYS (arms)RAYS (arms) CENTRAL DISK-area of mouth and CENTRAL DISK-area of mouth and

stomachstomach NERVE RING-surrounds mouthNERVE RING-surrounds mouth

SEA STARSSEA STARS

Nervous system=nerve ring and Nervous system=nerve ring and nerves radiating out from ringnerves radiating out from ring

SEA STARSSEA STARS

Nervous system=nerve ring and Nervous system=nerve ring and nerves radiating out from ringnerves radiating out from ring

WATER VASCULAR SYSTEM-used WATER VASCULAR SYSTEM-used for movement and getting foodfor movement and getting food

SEA STARSSEA STARS

Nervous system=nerve ring and Nervous system=nerve ring and nerves radiating out from ringnerves radiating out from ring

WATER VASCULAR SYSTEM-used WATER VASCULAR SYSTEM-used for movement and getting foodfor movement and getting food SIEVE PLATE-water entersSIEVE PLATE-water enters

SEA STARSSEA STARS

Nervous system=nerve ring and Nervous system=nerve ring and nerves radiating out from ringnerves radiating out from ring

WATER VASCULAR SYSTEM-used WATER VASCULAR SYSTEM-used for movement and getting foodfor movement and getting food SIEVE PLATE-water entersSIEVE PLATE-water enters STONE CANAL-tube leading from sieve STONE CANAL-tube leading from sieve

plateplate

SEA STARSSEA STARS

Nervous system=nerve ring and nerves Nervous system=nerve ring and nerves radiating out from ringradiating out from ring

WATER VASCULAR SYSTEM-used for WATER VASCULAR SYSTEM-used for movement and getting foodmovement and getting food SIEVE PLATE-water entersSIEVE PLATE-water enters STONE CANAL-tube leading from sieve plateSTONE CANAL-tube leading from sieve plate Ring canal-surrounds central diskRing canal-surrounds central disk RADIAL CANALS-extend down each ray from RADIAL CANALS-extend down each ray from

stone canalstone canal AMPULLA-forms suctionAMPULLA-forms suction

SEA STARSEA STAR

TUBE FEET-connected to radial TUBE FEET-connected to radial canalcanal

SEA STARSEA STAR

TUBE FEET-connected to radial TUBE FEET-connected to radial canalcanal hollow cylinders that act as suction hollow cylinders that act as suction

disksdisks

SEA STARSEA STAR

TUBE FEET-connected to radial TUBE FEET-connected to radial canalcanal hollow cylinders that act as suction hollow cylinders that act as suction

disksdisks help in movementhelp in movement

SEA STARSEA STAR

TUBE FEET-connected to radial TUBE FEET-connected to radial canalcanal hollow cylinders that act as suction hollow cylinders that act as suction

disksdisks help in movementhelp in movement

Sea stars eat mollusksSea stars eat mollusks

SEA STARSEA STAR

TUBE FEET-connected to radial TUBE FEET-connected to radial canalcanal hollow cylinders that act as suction hollow cylinders that act as suction

disksdisks help in movementhelp in movement

Sea stars eat mollusksSea stars eat mollusks pry open shellspry open shells

SEA STARSEA STAR

TUBE FEET-connected to radial TUBE FEET-connected to radial canalcanal hollow cylinders that act as suction hollow cylinders that act as suction

disksdisks help in movementhelp in movement

Sea stars eat mollusksSea stars eat mollusks pry open shellspry open shells turns stomach inside out through its turns stomach inside out through its

mouthmouth

SEA STARSEA STAR

TUBE FEET-connected to radial canalTUBE FEET-connected to radial canal hollow cylinders that act as suction diskshollow cylinders that act as suction disks help in movementhelp in movement

Sea stars eat mollusksSea stars eat mollusks pry open shellspry open shells turns stomach inside out through its mouthturns stomach inside out through its mouth inserts stomach into shell, starts digestion inserts stomach into shell, starts digestion

right awayright away

SEA STARSSEA STARS

REGENERATION-ability to regrow REGENERATION-ability to regrow lost parts (ex. Arms)-central disk has lost parts (ex. Arms)-central disk has to remainto remain

SKIN GILLS-gas exchange (in SKIN GILLS-gas exchange (in addition to tube feet)addition to tube feet)

SEA STAR FEEDINGSEA STAR FEEDING

SEA STAR CLEANING SEA STAR CLEANING STOMACHSTOMACH

OTHER ECHINODERMSOTHER ECHINODERMS

SEA CUCUMBER-shaped like SEA CUCUMBER-shaped like cucumbercucumber

OTHER ECHINODERMSOTHER ECHINODERMS

SEA CUCUMBER-shaped like SEA CUCUMBER-shaped like cucumbercucumber mouth on one end, tentacles all aroundmouth on one end, tentacles all around

OTHER ECHINODERMSOTHER ECHINODERMS

SEA CUCUMBER-shaped like SEA CUCUMBER-shaped like cucumbercucumber mouth on one end, tentacles all aroundmouth on one end, tentacles all around anus on other endanus on other end

OTHER ECHINODERMSOTHER ECHINODERMS

SEA CUCUMBER-shaped like SEA CUCUMBER-shaped like cucumbercucumber mouth on one end, tentacles all aroundmouth on one end, tentacles all around anus on other endanus on other end ejects internal organs when attackedejects internal organs when attacked

OTHER ECHINODERMSOTHER ECHINODERMS

SEA CUCUMBER-shaped like SEA CUCUMBER-shaped like cucumbercucumber mouth on one end, tentacles all aroundmouth on one end, tentacles all around anus on other endanus on other end ejects internal organs when attackedejects internal organs when attacked regenerates lost partsregenerates lost parts

OTHER ECHINODERMSOTHER ECHINODERMS

SEA URCHINS-large spines, look SEA URCHINS-large spines, look like prickly burrlike prickly burr

OTHER ECHINODERMSOTHER ECHINODERMS

SEA URCHINS-large spines, look SEA URCHINS-large spines, look like prickly burrlike prickly burr use spines to moveuse spines to move

OTHER ECHINODERMSOTHER ECHINODERMS

SEA URCHINS-large spines, look SEA URCHINS-large spines, look like prickly burrlike prickly burr use spines to moveuse spines to move

SAND DOLLARS-flat and smooth-SAND DOLLARS-flat and smooth-small spinessmall spines

IMPORTANCE OF IMPORTANCE OF MOLLUSKS/ECHINODERMOLLUSKS/ECHINODER

MSMS FoodFood

IMPORTANCE OF IMPORTANCE OF MOLLUSKS/ECHINODERMOLLUSKS/ECHINODER

MSMS FoodFood used at one time as money (clams)used at one time as money (clams)

IMPORTANCE OF IMPORTANCE OF MOLLUSKS/ECHINODERMOLLUSKS/ECHINODER

MSMS FoodFood used at one time as money (clams)used at one time as money (clams) shells are soldshells are sold

IMPORTANCE OF IMPORTANCE OF MOLLUSKS/ECHINODERMOLLUSKS/ECHINODER

MSMS FoodFood used at one time as money (clams)used at one time as money (clams) shells are soldshells are sold make jewelry etc.make jewelry etc.

IMPORTANCE OF IMPORTANCE OF MOLLUSKS/ECHINODERMOLLUSKS/ECHINODER

MSMS FoodFood used at one time as money (clams)used at one time as money (clams) shells are soldshells are sold make jewelry etc.make jewelry etc. pearlspearls

IMPORTANCE OF IMPORTANCE OF MOLLUSKS/ECHINODERMOLLUSKS/ECHINODER

MSMS FoodFood used at one time as money (clams)used at one time as money (clams) shells are soldshells are sold make jewelry etc.make jewelry etc. pearlspearls farmsfarms

IMPORTANCE OF IMPORTANCE OF MOLLUSKS/ECHINODERMOLLUSKS/ECHINODER

MSMS FoodFood used at one time as money (clams)used at one time as money (clams) shells are soldshells are sold make jewelry etc.make jewelry etc. pearlspearls farmsfarms fertilizerfertilizer