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STARFISH DISSECTION

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Presentation on theme: "STARFISH DISSECTION"— Presentation transcript:

1 STARFISH DISSECTION

2 Kidspiration by Riedell

3 STARFISH LATIN meaning KINGDOM _____________ PHYLUM _____________________________ CLASS _______________________________ ANIMALIA ECHINODERMATA “spiny skin ” ASTEROIDEA “star-like”

4 Starfish (sea stars) Come in a variety of colors

5 ... and sizes

6 Not all starfish have 5 arms

7 SYMMETRY ADULTS- Radial LARVA- Bilateral

8 PENTARADIAL (5 armed starfish)

9 INVERTEBRATES (No backbone) ALL INVERTEBRATES ARE PROTOSTOMES EXCEPT ECHINODERMS ONLY INVERTEBRATES that are DEUTEROSTOMES

10 ORAL VIEW

11

12 SPINES PEDICELLARIA SKIN GILLS Image by Riedell

13 SPINY SKIN SPINES for protection connect to ENDOSKELETON inside underneath skin

14 OSSICLES Calcium carbonate plates form endoskeleton inside

15 SPINES PEDICELLARIA SKIN GILLS Image by Riedell

16 PEDICELLARIAE (sing. Pedicellaria) Keep surface clear of organisms

17 SKIN GILLS Hollow skin tubes that project from skin for increased surface area connect to coelom inside Image by Riedell

18 Skin gills between spines EXCHANGE GASES and EXCRETE NITROGEN WASTE

19 TUBE FEET surfaces Can exchange gases and excrete nitrogen waste

20 EYESPOTS Sense light/dark

21 Opening to water vascular system Madreporite

22

23 WATER VASCULAR SYSTEM BIODIDAC

24

25 ORAL VIEW MOUTH

26

27 AMBULACRAL GROOVE TUBE FEET sit in GROOVE

28 TUBE FEET Used for feeding & locomotion

29 TUBE FEET Used for feeding & locomotion Can exchange gases and excrete nitrogen waste

30 CUT TRIVIUM

31 DIGESTIVE GLAND Makes BILE ABSORBS NUTRIENTS

32

33 2 part STOMACH

34 DIGESTIVE SYSTEM DIGESTIVE GLANDS DIGESTIVE GLANDS MOUTH ANUS Image by Riedell

35 CARDIAC stomach connects to mouth (extruded during feeding) PYLORIC stomach connects to digestive glands and ANUS

36 EUCOELOM OPEN CIRCULATION

37 ENDOSKELETON made of OSSICLES

38 OSSICLES Calcium carbonate plates form endoskeleton inside

39

40 WATER VASCULAR SYSTEM BIODIDAC

41

42 GONADS

43 AMBULACRAL RIDGE covered by OSSICLES contains RADIAL NERVE (nervous) and RADIAL CANAL (water vascular system)

44 AMBULACRAL RIDGE AMPULLAE (tops of tube feet)

45 NERVOUS SYSTEM follows WVS NERVE RING encircles mouth RADIAL NERVES run inside AMBULACRAL RIDGE in each arm Image by Riedell

46 SEPARATE SEXES GONADS- reproductive organs Starfish have both SEXUAL ASEXUAL (Regeneration)

47

48 DIGESTIVE GLAND GONAD OSSICLES

49 MOLLUSKS (some ANNELIDS) Have a TROCHOPHORE LARVA

50 LARVA FERTILIZATION EXTERNAL INDIRECT Has BILATERAL SYMMETRY and wings to swim BIPINNARIA SEXUAL REPRODUCTION DEVELOPMENT

51 ASEXUAL REPRODUCTION Ability to self amputate Ability to regrow lost parts AUTOTOMY REGENERATION


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