Phylum Mollusca (5 Classes) Scaphopoda Cephalopoda – Head foot - PowerPoint PPT Presentation

elvis-kirby
slide1 n.
Skip this Video
Loading SlideShow in 5 Seconds..
Phylum Mollusca (5 Classes) Scaphopoda Cephalopoda – Head foot PowerPoint Presentation
Download Presentation
Phylum Mollusca (5 Classes) Scaphopoda Cephalopoda – Head foot

play fullscreen
1 / 9
Download Presentation
Phylum Mollusca (5 Classes) Scaphopoda Cephalopoda – Head foot
423 Views
Download Presentation

Phylum Mollusca (5 Classes) Scaphopoda Cephalopoda – Head foot

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Phylum Mollusca (5 Classes) Scaphopoda Cephalopoda – Head foot Pelecypoda (Bivalvia) – Hatchet foot Polyplacophora – Many plates on a foot Gastropoda – Stomach foot

  2. ClassScaphopoda- “tusk shells” Wampum Indians, head in the sand, captacula, eat foramniferans, respire through mantle as have no gills.

  3. I see Spot very well I make make spots all over me in order to hide! I swim faster than Spot My arms are derived from the Gastropod foot ClassCephalopoda - Octopuses, Squid, Nautilus, Cuttlefish…beak, pen, ink sac, chromatophores, jet propulsion……….dissection.

  4. Name of oldest part? D P A V ClassBivalviaor Pelecypoda- clams, scallops etc. filter feeders, bivalved shells…… dissection

  5. Umbo D P A V ClassBivalviaorPelecypoda- clams, scallops etc. filter feeders, bivalved shells…… dissection

  6. Dorsal Ventricle Heart Auricle Bulbus arteriosus Anterior Adductor muscles Gills Posterior Mouth Visceral Mass Excurrent & Incurrent siphons Foot Gills or ctenidium – Each = 2 demibranchs Mantle Ventral Schematic Diagram of a Clam Dissection

  7. Anus Gills in mantle cavity Mantle Radula in mouth Head Chitons radula, 8 plates ClassPolyplacophora

  8. Subclass Prosobranchia – pointed shells! Aquatic GILLS Dextral Subclass Pulmonata – rounded shells! Land snails and slugs LUNG ClassGastropoda- snails, conchs torsion/coiling, radula, operculum.

  9. Subclass Pulmonata Slug SubclassOpisthobranchia Nudibranch Egg Sac Detorsion If it looks strange, chances are its something from Class Gastropoda