1 / 52

ECHINODERMS

ECHINODERMS. ECHINODERMS. Means spiny skin. ECHINODERMS. Means spiny skin include sea stars, sea cucumbers, sea urchins and sand dollars. SEA CUCUMBER. SAND DOLLAR. SEA URCHIN. SEA URCHIN. http://www.racerocks.com/racerock/archives/vidpurpleurchin2a.htm. ECHINODERMS. Means spiny skin

bena
Download Presentation

ECHINODERMS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. ECHINODERMS

  2. ECHINODERMS • Means spiny skin

  3. ECHINODERMS • Means spiny skin • include sea stars, sea cucumbers, sea urchins and sand dollars

  4. SEA CUCUMBER

  5. SAND DOLLAR

  6. SEA URCHIN

  7. SEA URCHIN • http://www.racerocks.com/racerock/archives/vidpurpleurchin2a.htm

  8. ECHINODERMS • Means spiny skin • include sea stars, sea cucumbers, sea urchins and sand dollars • ENDOSKELETON-internal skeleton • made of spines

  9. ECHINODERMS • Means spiny skin • include sea stars, sea cucumbers, sea urchins and sand dollars • ENDOSKELETON-internal skeleton • made of spines • spines made of calcium carbonate

  10. ECHINODERMS • Means spiny skin • include sea stars, sea cucumbers, sea urchins and sand dollars • ENDOSKELETON-internal skeleton • made of spines • spines made of calcium carbonate • covered in thin layer of skin

  11. ECHINODERMS • Means spiny skin • include sea stars, sea cucumbers, sea urchins and sand dollars • ENDOSKELETON-internal skeleton • made of spines • spines made of calcium carbonate • covered in thin layer of skin

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

  13. ECHINODERMS • Usually have 5 arms around a central disk • RADIALLY symmetrical-radiate around a central point (like spokes of a tire)

  14. ECHINODERMS • Usually have 5 arms around a central disk • RADIALLY symmetrical-radiate around a central point (like spokes of a tire) • live only in the ocean

  15. ECHINODERMS • Usually have 5 arms around a central disk • RADIALLY symmetrical-radiate around a central point (like spokes of a tire) • live only in the ocean • no well defined head

  16. ECHINODERMS • Usually have 5 arms around a central disk • RADIALLY symmetrical-radiate around a central point (like spokes of a tire) • live only in the ocean • no well defined head • circulatory, respiratory and excretory systems missing

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

  18. SEA STARS • Common name=star fish

  19. SEA STARS • Common name=star fish • range from 1cm to 1 m in diameter

  20. SEA STARS • Common name=star fish • range from 1cm to 1 m in diameter • made of central disk and 5 tapered RAYS (arms)

  21. SEA STARS • Common name=star fish • range from 1cm to 1 m in diameter • made of central disk and 5 tapered RAYS (arms) • CENTRAL DISK-area of mouth and stomach

  22. SEA STARS • Common name=star fish • range from 1cm to 1 m in diameter • made of central disk and 5 tapered RAYS (arms) • CENTRAL DISK-area of mouth and stomach • NERVE RING-surrounds mouth

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

  24. SEA STARS • Nervous system=nerve ring and nerves radiating out from ring • WATER VASCULAR SYSTEM-used for movement and getting food

  25. SEA STARS • Nervous system=nerve ring and nerves radiating out from ring • WATER VASCULAR SYSTEM-used for movement and getting food • SIEVE PLATE-water enters

  26. SEA STARS • Nervous system=nerve ring and nerves radiating out from ring • WATER VASCULAR SYSTEM-used for movement and getting food • SIEVE PLATE-water enters • STONE CANAL-tube leading from sieve plate

  27. SEA STARS • Nervous system=nerve ring and nerves radiating out from ring • WATER VASCULAR SYSTEM-used for movement and getting food • SIEVE PLATE-water enters • STONE CANAL-tube leading from sieve plate • Ring canal-surrounds central disk • RADIAL CANALS-extend down each ray from stone canal • AMPULLA-forms suction

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

  29. SEA STAR • TUBE FEET-connected to radial canal • hollow cylinders that act as suction disks

  30. SEA STAR • TUBE FEET-connected to radial canal • hollow cylinders that act as suction disks • help in movement

  31. SEA STAR • TUBE FEET-connected to radial canal • hollow cylinders that act as suction disks • help in movement • Sea stars eat mollusks

  32. SEA STAR • TUBE FEET-connected to radial canal • hollow cylinders that act as suction disks • help in movement • Sea stars eat mollusks • pry open shells

  33. SEA STAR • TUBE FEET-connected to radial canal • hollow cylinders that act as suction disks • help in movement • Sea stars eat mollusks • pry open shells • turns stomach inside out through its mouth

  34. SEA STAR • TUBE FEET-connected to radial canal • hollow cylinders that act as suction disks • help in movement • Sea stars eat mollusks • pry open shells • turns stomach inside out through its mouth • inserts stomach into shell, starts digestion right away

  35. SEA STARS • REGENERATION-ability to regrow lost parts (ex. Arms)-central disk has to remain • 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

  39. OTHER ECHINODERMS • SEA CUCUMBER-shaped like cucumber • mouth on one end, tentacles all around

  40. OTHER ECHINODERMS • SEA CUCUMBER-shaped like cucumber • mouth on one end, tentacles all around • anus on other end

  41. OTHER ECHINODERMS • SEA CUCUMBER-shaped like cucumber • mouth on one end, tentacles all around • anus on other end • ejects internal organs when attacked

  42. OTHER ECHINODERMS • SEA CUCUMBER-shaped like cucumber • mouth on one end, tentacles all around • anus on other end • ejects internal organs when attacked • regenerates lost parts

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

  44. OTHER ECHINODERMS • SEA URCHINS-large spines, look like prickly burr • use spines to move

  45. OTHER ECHINODERMS • SEA URCHINS-large spines, look like prickly burr • use spines to move • SAND DOLLARS-flat and smooth-small spines

  46. IMPORTANCE OF MOLLUSKS/ECHINODERMS • Food

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

  48. IMPORTANCE OF MOLLUSKS/ECHINODERMS • Food • used at one time as money (clams) • shells are sold

  49. IMPORTANCE OF MOLLUSKS/ECHINODERMS • Food • used at one time as money (clams) • shells are sold • make jewelry etc.

  50. IMPORTANCE OF MOLLUSKS/ECHINODERMS • Food • used at one time as money (clams) • shells are sold • make jewelry etc. • pearls

More Related