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Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone.

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Presentation on theme: "Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone."— Presentation transcript:

1 Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone cephalization (have head) Ladder-type nervous system (no spinal cord) Bilateral symmetry (rt. & lt. side)

2 What is the class and the common name? Turbellaria - planarian What is this? What is the class, genus and common name? Scolex – Cestodes – Taenia - tapeworm What is the class, genus and common name? Trematodes – Fasciola - fluke Identify what this is. tapeworm

3 Characteristics of Phylum: Annelidae Segmented Marine Use body pressure to give body form Have setae (bristles) for movement

4 What is the class and common name? Polychaete - clamworm What is the class and common name? Oligochaete - earthworm Identify this. earthworm Identify this. earthworm

5 What is the class and common name? Hirudina - leech Characteristics of Hirudinea: -Fresh water -Two suckers -No setae -Prevent clotting by means of hirudin, a powerful anticoagulant

6 Label this part of the earthworm

7 Answers 13. Intestines 16. Nephridium – bladder & excretory tubules 36. Setae

8 LABEL

9 Answers 6. Mouth 8. Pharynx 9. Esophagus 10. Calciferous glands 11. Crop 12. Gizzard 13. Intestines 16. Nephridium – bladder & excretory tubules 23. Hearts 25. Brain 30. Seminal vesicles – sperm sacs 32. Ovary 34. Clitellum 36. Setae 37. Septa

10 LABEL

11 Characteristics of Phylum: Nematoda Roundworms Complete digestive tract Tell males from females Have cloacae (common opening) Males have spicules

12 What class does this belong? Trichinella What class does this belong? Ascaris What disease does this worm cause? Trichinosis Where is this worm found? Intestinal tract

13 Characteristics of Phylum: Mollusca Three part body –Visceral = contains internal organs –Mantle = may secrete shell and/or contribute to the development of gills or lungs –Foot = muscle for locomotion, attachment, or food capture

14 What class does this belong and what is the common name? Cephalopoda - squid What class does this belong and what is the common name? Cephalopoda - octopus

15 What class does this belong and what is the common name? Gastropoda – land snail What class does this belong and what is the common name? Gastropoda - slug

16 What is the class and common name? Bivalvia - clam What is the class and common name? Bivalvia - clam

17 What is the class and common name? Bivalvia - scallop What is the class and common name? Bivalvia - scallop

18 What is the class and common name? Bivalvia - mussel

19 LABEL

20 ANSWERS 1. SHELL 6. MUSCLE 8. MANTLE 9. FOOT 18. KIDNEY 21. GILLS 22. VENTRAL (INCURRENT) SIPHON 23. DORSAL (EXCURRENT) SIPHON 28. HEART

21 LABEL

22 ANSWERS 5. Muscle 6. Muscle 8. Mantle 9. Foot 10. Mouth 11. Labial palps 12. Esophagus 13. Stomach 14. Digestive gland 15. Intestine 18. Kidney 21. Gills 28. Heart 40. gonad

23 IDENTIFY THESE AA B C D E

24 ANSWERS A. Clam B. Scallop C. D. E. Snail

25 Phylum:Platyhelminthes Classes –Turbellaria (planarians) –Trematodes (flukes/Fasciola) –Cestodes (tapeworms/Taenia)

26 Planarians (flatworms) Fresh water No anal Pharynx on belly Flame cells function as kidneys Have testes and ovaries Three muscle layers which allow movement in all directions –Outer –Inner –diagonal Head is bluntly arrow shaped –Two light sensitive eye spots –Auricles function as sense organs

27 Flukes (flatworms) Parasitic Well developed nerves and gastro cavity are NOT necessary All parasites will have at least two hosts

28 Tapeworms (flatworms) No mouth Lay in digestive tract and live off juices Have head (scolex) and rest are segments that will have eggs and exit in feces

29 Phylum:Nematoda Classes –Trichinella (roundworms) –Ascaris (roundworms)

30 Phylum:Annelidae Classes: –Polychaete (clamworms) –Oligochaetes (earthworms) –Hirudinea (leeches)

31 Clamworms Have jaw Parapodia (gills and paddles)

32 Earthworm Have five hearts Crop Clitellum (attach to reproduce) Gizzard breaks down food Central nervous system Have ovaries and testes

33 Leeches Fresh water Two suckers No setae Prevent clotting

34 Phylum:Mollusca Classes: –Bivalvia (clams, scallops, mussels, oysters) –Gastropoda (snails, slugs) –Cephalopoda (octopus, squid)

35 Clams, Scallops, Mussels, Oysters Gills gather oxygen and filter feeds Tongue cleans gills and organs for food Small ganglion (brain) Same organs we have Liver = digestive gland Adductor muscles hold shell together Sexes are separate

36 Snails, Slugs Crawl on stomach and secrete slime Coiled shell Tentacles w/ eye stalks Gills are in mantle Mantle functions as lungs Organ system like Bivalves Radula (tongue) = rough

37 Octopus, Squid Head footed Tentacles and arms capture prey by using suckers Well developed sense organs Octopus = slow Squid = fast They are predators


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