ECHINODERMS. ECHINODERMS Means spiny skin Means spiny skin.

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ECHINODERMS Slide 2 ECHINODERMS Means spiny skin Means spiny skin Slide 3 ECHINODERMS include sea stars, sea cucumbers, sea urchins and sand dollars include sea stars, sea cucumbers, sea urchins and sand dollars Slide 4 SEA CUCUMBER Slide 5 SAND DOLLAR Slide 6 SEA URCHIN Slide 7 http://www.racerocks.com/racerock/archives/ vidpurpleurchin2a.htm http://www.racerocks.com/racerock/archives/ vidpurpleurchin2a.htm http://www.racerocks.com/racerock/archives/ vidpurpleurchin2a.htm http://www.racerocks.com/racerock/archives/ vidpurpleurchin2a.htm Slide 8 ECHINODERMS Means spiny skin Means spiny skin include sea stars, sea cucumbers, sea urchins and sand dollars include sea stars, sea cucumbers, sea urchins and sand dollars ENDOSKELETON-internal skeleton ENDOSKELETON-internal skeleton made of spines made of spines Slide 9 ECHINODERMS Means spiny skin Means spiny skin include sea stars, sea cucumbers, sea urchins and sand dollars include sea stars, sea cucumbers, sea urchins and sand dollars ENDOSKELETON-internal skeleton ENDOSKELETON-internal skeleton made of spines made of spines spines made of calcium carbonate spines made of calcium carbonate Slide 10 ECHINODERMS Means spiny skin Means spiny skin include sea stars, sea cucumbers, sea urchins and sand dollars include sea stars, sea cucumbers, sea urchins and sand dollars ENDOSKELETON-internal skeleton ENDOSKELETON-internal skeleton made of spines made of spines spines made of calcium carbonate spines made of calcium carbonate covered in thin layer of skin covered in thin layer of skin Slide 11 ECHINODERMS Means spiny skin Means spiny skin include sea stars, sea cucumbers, sea urchins and sand dollars include sea stars, sea cucumbers, sea urchins and sand dollars ENDOSKELETON-internal skeleton ENDOSKELETON-internal skeleton made of spines made of spines spines made of calcium carbonate spines made of calcium carbonate covered in thin layer of skin covered in thin layer of skin Slide 12 ECHINODERMS Usually have 5 arms around a central disk Usually have 5 arms around a central disk Slide 13 ECHINODERMS RADIALLY symmetrical-radiate around a central point (like spokes of a tire) RADIALLY symmetrical-radiate around a central point (like spokes of a tire) Slide 14 ECHINODERMS Usually have 5 arms around a central disk Usually have 5 arms around a central disk RADIALLY symmetrical-radiate around a central point (like spokes of a tire) RADIALLY symmetrical-radiate around a central point (like spokes of a tire) live only in the ocean live only in the ocean Slide 15 ECHINODERMS Usually have 5 arms around a central disk Usually have 5 arms around a central disk RADIALLY symmetrical-radiate around a central point (like spokes of a tire) RADIALLY symmetrical-radiate around a central point (like spokes of a tire) live only in the ocean live only in the ocean no well defined head no well defined head Slide 16 ECHINODERMS Usually have 5 arms around a central disk Usually have 5 arms around a central disk RADIALLY symmetrical-radiate around a central point (like spokes of a tire) RADIALLY symmetrical-radiate around a central point (like spokes of a tire) live only in the ocean live only in the ocean no well defined head no well defined head circulatory, respiratory and excretory systems missing circulatory, respiratory and excretory systems missing Slide 17 ECHINODERMS Have a nervous system, but no brain Have a nervous system, but no brain Slide 18 SEA STARS Common name=star fish Common name=star fish Slide 19 SEA STARS Common name=star fish Common name=star fish range from 1cm to 1 m in diameter range from 1cm to 1 m in diameter Slide 20 SEA STARS Common name=star fish Common name=star fish range from 1cm to 1 m in diameter range from 1cm to 1 m in diameter made of central disk and 5 tapered RAYS (arms) made of central disk and 5 tapered RAYS (arms) Slide 21 SEA STARS Common name=star fish Common name=star fish range from 1cm to 1 m in diameter range from 1cm to 1 m in diameter made of central disk and 5 tapered RAYS (arms) made of central disk and 5 tapered RAYS (arms) CENTRAL DISK-area of mouth and stomach CENTRAL DISK-area of mouth and stomach Slide 22 SEA STARS Common name=star fish Common name=star fish range from 1cm to 1 m in diameter range from 1cm to 1 m in diameter made of central disk and 5 tapered RAYS (arms) made of central disk and 5 tapered RAYS (arms) CENTRAL DISK-area of mouth and stomach CENTRAL DISK-area of mouth and stomach NERVE RING-surrounds mouth NERVE RING-surrounds mouth Slide 23 SEA STARS Nervous system=nerve ring and nerves radiating out from ring Nervous system=nerve ring and nerves radiating out from ring Slide 24 SEA STARS Nervous system=nerve ring and nerves radiating out from ring Nervous system=nerve ring and nerves radiating out from ring WATER VASCULAR SYSTEM-used for movement and getting food WATER VASCULAR SYSTEM-used for movement and getting food Slide 25 SEA STARS Nervous system=nerve ring and nerves radiating out from ring Nervous system=nerve ring and nerves radiating out from ring WATER VASCULAR SYSTEM-used for movement and getting food WATER VASCULAR SYSTEM-used for movement and getting food SIEVE PLATE-water enters SIEVE PLATE-water enters Slide 26 SEA STARS Nervous system=nerve ring and nerves radiating out from ring Nervous system=nerve ring and nerves radiating out from ring WATER VASCULAR SYSTEM-used for movement and getting food WATER VASCULAR SYSTEM-used for movement and getting food SIEVE PLATE-water enters SIEVE PLATE-water enters STONE CANAL-tube leading from sieve plate STONE CANAL-tube leading from sieve plate Slide 27 SEA STARS Nervous system=nerve ring and nerves radiating out from ring Nervous system=nerve ring and nerves radiating out from ring WATER VASCULAR SYSTEM-used for movement and getting food WATER VASCULAR SYSTEM-used for movement and getting food SIEVE PLATE-water enters SIEVE PLATE-water enters STONE CANAL-tube leading from sieve plate STONE CANAL-tube leading from sieve plate Ring canal-surrounds central disk Ring canal-surrounds central disk RADIAL CANALS-extend down each ray from stone canal RADIAL CANALS-extend down each ray from stone canal AMPULLA-forms suction AMPULLA-forms suction Slide 28 SEA STAR TUBE FEET-connected to radial canal TUBE FEET-connected to radial canal Slide 29 SEA STAR TUBE FEET-connected to radial canal TUBE FEET-connected to radial canal hollow cylinders that act as suction disks hollow cylinders that act as suction disks Slide 30 SEA STAR TUBE FEET-connected to radial canal TUBE FEET-connected to radial canal hollow cylinders that act as suction disks hollow cylinders that act as suction disks help in movement help in movement Slide 31 SEA STAR TUBE FEET-connected to radial canal TUBE FEET-connected to radial canal hollow cylinders that act as suction disks hollow cylinders that act as suction disks help in movement help in movement Sea stars eat mollusks Sea stars eat mollusks Slide 32 SEA STAR TUBE FEET-connected to radial canal TUBE FEET-connected to radial canal hollow cylinders that act as suction disks hollow cylinders that act as suction disks help in movement help in movement Sea stars eat mollusks Sea stars eat mollusks pry open shells pry open shells Slide 33 SEA STAR TUBE FEET-connected to radial canal TUBE FEET-connected to radial canal hollow cylinders that act as suction disks hollow cylinders that act as suction disks help in movement help in movement Sea stars eat mollusks Sea stars eat mollusks pry open shells pry open shells turns stomach inside out through its mouth turns stomach inside out through its mouth Slide 34 SEA STAR TUBE FEET-connected to radial canal TUBE FEET-connected to radial canal hollow cylinders that act as suction disks hollow cylinders that act as suction disks help in movement help in movement Sea stars eat mollusks Sea stars eat mollusks pry open shells pry open shells turns stomach inside out through its mouth turns stomach inside out through its mouth inserts stomach into shell, starts digestion right away inserts stomach into shell, starts digestion right away Slide 35 SEA STARS REGENERATION-ability to regrow lost parts (ex. Arms)-central disk has to remain REGENERATION-ability to regrow lost parts (ex. Arms)-central disk has to remain SKIN GILLS-gas exchange (in addition to tube feet) SKIN GILLS-gas exchange (in addition to tube feet) Slide 36 SEA STAR FEEDING Slide 37 SEA STAR CLEANING STOMACH Slide 38 OTHER ECHINODERMS SEA CUCUMBER-shaped like cucumber SEA CUCUMBER-shaped like cucumber Slide 39 OTHER ECHINODERMS SEA CUCUMBER-shaped like cucumber SEA CUCUMBER-shaped like cucumber mouth on one end, tentacles all around mouth on one end, tentacles all around Slide 40 OTHER ECHINODERMS SEA CUCUMBER-shaped like cucumber SEA CUCUMBER-shaped like cucumber mouth on one end, tentacles all around mouth on one end, tentacles all around anus on other end anus on other end Slide 41 OTHER ECHINODERMS SEA CUCUMBER-shaped like cucumber SEA CUCUMBER-shaped like cucumber mouth on one end, tentacles all around mouth on one end, tentacles all around anus on other end anus on other end ejects internal organs when attacked ejects internal organs when attacked Slide 42 OTHER ECHINODERMS SEA CUCUMBER-shaped like cucumber SEA CUCUMBER-shaped like cucumber mouth on one end, tentacles all around mouth on one end, tentacles all around anus on other end anus on other end ejects internal organs when attacked ejects internal organs when attacked regenerates lost parts regenerates lost parts Slide 43 OTHER ECHINODERMS SEA URCHINS-large spines, look like prickly burr SEA URCHINS-large spines, look like prickly burr Slide 44 OTHER ECHINODERMS SEA URCHINS-large spines, look like prickly burr SEA URCHINS-large spines, look like prickly burr use spines to move use spines to move Slide 45 OTHER ECHINODERMS SEA URCHINS-large spines, look like prickly burr SEA URCHINS-large spines, look like prickly burr use spines to move use spines to move SAND DOLLARS-flat and smooth-small spines SAND DOLLARS-flat and smooth-small spines Slide 46 IMPORTANCE OF MOLLUSKS/ECHINODERMS Food Food Slide 47 IMPORTANCE OF MOLLUSKS/ECHINODERMS Food Food used at one time as money (clams) used at one time as money (clams) Slide 48 IMPORTANCE OF MOLLUSKS/ECHINODERMS Food Food used at one time as money (clams) used at one time as money (clams) shells are sold shells are sold Slide 49 IMPORTANCE OF MOLLUSKS/ECHINODERMS Food Food used at one time as money (clams) used at one time as money (clams) shells are sold shells are sold make jewelry etc. make jewelry etc. Slide 50 IMPORTANCE OF MOLLUSKS/ECHINODERMS Food Food used at one time as money (clams) used at one time as money (clams) shells are sold shells are sold make jewelry etc. make jewelry etc. pearls pearls Slide 51 IMPORTANCE OF MOLLUSKS/ECHINODERMS Food Food used at one time as money (clams) used at one time as money (clams) shells are sold shells are sold make jewelry etc. make jewelry etc. pearls pearls farms farms Slide 52 IMPORTANCE OF MOLLUSKS/ECHINODERMS Food Food used at one time as money (clams) used at one time as money (clams) shells are sold shells are sold make jewelry etc. make jewelry etc. pearls pearls farms farms fertilizer fertilizer

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