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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)

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

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Page 1: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

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)

Page 2: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

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↓

Page 3: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

Characteristics of Phylum:Annelidae

• Segmented

• Marine

• Use body pressure to give body form

• Have setae (bristles) for movement

Page 4: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

What is the class and common name?Polychaete - clamworm

What is the class and common name?Oligochaete - earthworm

Identify this.earthworm↓Identify this.

earthworm↓

Page 6: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

Label this part of the earthworm

Page 7: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

Answers13. Intestines16. Nephridium – bladder & excretory tubules36. Setae

Page 8: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

LABEL

Page 9: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

Answers6. Mouth8. Pharynx9. Esophagus10. Calciferous glands11. Crop12. Gizzard13. Intestines16. Nephridium – bladder & excretory tubules23. Hearts25. Brain30. Seminal vesicles – sperm sacs32. Ovary34. Clitellum36. Setae37. Septa

Page 10: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

LABEL

Page 11: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

Characteristics of Phylum:Nematoda

• Roundworms

• Complete digestive tract

• Tell males from females

• Have cloacae (common opening)

• Males have spicules

Page 12: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

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→

Page 13: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

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

Page 14: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

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

Page 15: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

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

Page 16: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

What is the class and common name?Bivalvia - clam

What is the class and common name?Bivalvia - clam

Page 17: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

What is the class and common name?Bivalvia - scallop

What is the class and common name?Bivalvia - scallop

Page 18: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

What is the class and common name?Bivalvia - mussel

Page 19: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

LABEL

Page 20: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

ANSWERS

1. SHELL

6. MUSCLE

8. MANTLE

9. FOOT

18. KIDNEY

21. GILLS

22. VENTRAL (INCURRENT) SIPHON

23. DORSAL (EXCURRENT) SIPHON

28. HEART

Page 21: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

LABEL

Page 22: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

ANSWERS5. Muscle6. Muscle8. Mantle9. Foot10. Mouth11. Labial palps12. Esophagus13. Stomach14. Digestive gland15. Intestine18. Kidney21. Gills28. Heart40. gonad

Page 23: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

IDENTIFY THESE

A A

B

C

D

E

Page 24: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

ANSWERS

• A. Clam

• B. Scallop

• C.

• D.

• E. Snail

Page 25: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

Phylum:Platyhelminthes

• Classes– Turbellaria (planarians)– Trematodes (flukes/Fasciola)– Cestodes (tapeworms/Taenia)

Page 26: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

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

Page 27: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

Flukes (flatworms)

• Parasitic

• Well developed nerves and gastro cavity are NOT necessary

• All parasites will have at least two hosts

Page 28: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

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

Page 29: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

Phylum:Nematoda

• Classes– Trichinella (roundworms)– Ascaris (roundworms)

Page 30: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

Phylum:Annelidae

• Classes:– Polychaete (clamworms)– Oligochaetes (earthworms)– Hirudinea (leeches)

Page 31: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

Clamworms

• Have jaw

• Parapodia (gills and paddles)

Page 32: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

Earthworm

• Have five hearts

• Crop

• Clitellum (attach to reproduce)

• Gizzard breaks down food

• Central nervous system

• Have ovaries and testes

Page 33: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

Leeches

• Fresh water

• Two suckers

• No setae

• Prevent clotting

Page 34: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

Phylum:Mollusca

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

Page 35: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

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

Page 36: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

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

Page 37: Characteristics of Phylum: Platyhelminthes Mostly parasitic Organ level organization (no specialized circulatory or respiratory structures) Have undergone

Octopus, Squid

• Head footed

• Tentacles and arms capture prey by using suckers

• Well developed sense organs

• Octopus = slow

• Squid = fast

• They are predators