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ECHINODERMS. ECHINODERMS Means spiny skin Means spiny skin.

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Presentation on theme: "ECHINODERMS. ECHINODERMS Means spiny skin Means spiny skin."— Presentation transcript:

1 ECHINODERMS

2 ECHINODERMS Means spiny skin Means spiny skin

3 ECHINODERMS include sea stars, sea cucumbers, sea urchins and sand dollars include sea stars, sea cucumbers, sea urchins and sand dollars

4 SEA CUCUMBER

5 SAND DOLLAR

6 SEA URCHIN

7 vidpurpleurchin2a.htm vidpurpleurchin2a.htm vidpurpleurchin2a.htm vidpurpleurchin2a.htm

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

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

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

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

12 ECHINODERMS Usually have 5 arms around a central disk Usually have 5 arms around a central disk

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)

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

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

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

17 ECHINODERMS Have a nervous system, but no brain Have a nervous system, but no brain

18 SEA STARS Common name=star fish Common name=star fish

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

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)

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

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

23 SEA STARS Nervous system=nerve ring and nerves radiating out from ring Nervous system=nerve ring and nerves radiating out from ring

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

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

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

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

28 SEA STAR TUBE FEET-connected to radial canal TUBE FEET-connected to radial canal

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

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

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

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

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

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

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)

36 SEA STAR FEEDING

37 SEA STAR CLEANING STOMACH

38 OTHER ECHINODERMS SEA CUCUMBER-shaped like cucumber SEA CUCUMBER-shaped like cucumber

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

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

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

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

43 OTHER ECHINODERMS SEA URCHINS-large spines, look like prickly burr SEA URCHINS-large spines, look like prickly burr

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

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

46 IMPORTANCE OF MOLLUSKS/ECHINODERMS Food Food

47 IMPORTANCE OF MOLLUSKS/ECHINODERMS Food Food used at one time as money (clams) used at one time as money (clams)

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

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.

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

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

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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