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Basic Body Plan Muscular foot Gills Mantle – may secrete a shell Visceral mass Many have a scraping Radula Trochophore larvae
Molluscan Body Plan
Molluscan Classes Amphineurea (Polyplacophora) – Chitons Bivalvia (Pelecypoda) Cepahlopoda Gastropoda Phylum also include rarer classes (not covered in lab) Monoplacophora Scaphopoda
Chitons Eight Plates hinged together underneath skin Dorsally flattened Scrape algae off rocks with radula Marine
Bivalvia Mantle split in two- making two hinged shells Suspension feeders Incurrent- excurrent siphons bring water in /out Gills and palps collect and move particles to mouth
Fresh water Larvae- Glochidia #44
Intestine Heart Mantle Visceral mass Gills Foot #41
Clam Gill # 42
Clam Dissection Gills
Incurrent Siphon Excurrent Siphon
Heart- Open Circ. System Pericardial cavity (Ceolom)
Phylum Mollusca Chitons, Snails, Clams, Squids, etc.
Phylum Mollusca 1 Polyplacophora Gastropoda Bivalvia Scaphopoda Cephalopoda.
Phylum Mollusca (5 Classes) Scaphopoda Cephalopoda – Head foot Pelecypoda (Bivalvia) – Hatchet foot Polyplacophora – Many plates on a foot Gastropoda –
PHYLUM MOLLUSCA CLAMS,SQUIDS, OCTOPUSES, SNAILS, SLUGS, ETC.
WARM UP 1.List seven characteristics of roundworms.
Clams, Oysters, etc. Team Awesome. General Characteristics Most are marine, some freshwater, some land (some snails and slugs) Basic characteristics of.
Phylum Mollusca. Molluscs inhabit marine, freshwater, and terrestrial habitats. Body bilaterally symmetrical; unsegmented; often with a definitive head.
Phylum Mollusca (5 Classes) Polyplacophora – Many plates on a foot Cephalopoda – Head foot Gastropoda – Stomach Scaphopoda – Tusk shell Bivalvia – Hatchet.
Phylum Mollusca (5 Classes) Policemen censor gals in scant bikinis! Polyplacophora – Many plates on a foot Cephalopoda – Head foot Gastropoda – Stomach.
Phylum Mollusca Body Plan and Diversity A)Body Plan: Soft bodied animals that usually have an internal or external shell. The body consists of four parts:
Phylum Mollusca Phylum Mollusca (mollis, soft) Body usually an anterior head, ventral foot and a dorsal visceral mass. Covered by a fleshy outgrowth.
Chapter 7 Phylum Mollusca Class Bivalvia Class Gastropoda Class Cephalopoda ucmp.berkeley.edu seawater.no Xaxor.com.
Mighty. Scraping teeth Body of Mollusc Molluscs The life cycle of many marine mollusks includes a ciliated larvae, the ____trochophore___________.
Polly want a Polyplacophora Head over Heels with Cephalopoda Don’t Clam Up Hail the Snail Mulling over Mollusca
Phylum Mollusca Soft – bodied invertebrates Clams, Octopus, Snails.
Phylum Mollusca. Attributes of the molluscs Segmental Trochophore larvae Head, foot and body component Shell is secreted by mantle –Periostracum –Prismatic.
Invertebrates: Phylum Mollusca Molluscs Large and diverse group Coelomates Bilateral symmetry, three germ layers, organ level of organization, tube-within-a-
Phylum Mollusca. Mollusc Characteristics 90,000+ living species –70,000+ fossil species Mantle –Pair of dorsal folds of the body wall –Forms a mantle.
STOP 6: PHYLUM MOLLUSCA. Characteristics ◦ Soft-bodied invertebrate covered with protective mantle that may or may not form a hard, calcium carbonate.
Ch. 35 – Mollusks & Annelids Mollusks and annelids are grouped together because they were the 1 st organisms to develop a true coelom. – This suggests.
Unsegmented soft body Mollusks have 3 main parts -visceral mass, modified foot, & mantle Mollusks have a visceral mass (contains the organs) Mollusks.
27 Sept.2014Mollusks.ppt1 Coelomate Protostomes Phylum Mollusca Phylum Annelida Phylum Arthropoda.
CLAM DISSECTION. CLAMS ARE: Invertebrates- no backbone Protostomes- blastopore becomes mouth.
PHYLUM MOLLUSCA (Molle= soft body). PHYLUM MOLLUSCA OVER 100,OOO LIVING SPECIES; MANY 1000’S OF FOSSIL SPECIES FOUND IN ALMOST ALL ENVIRONMENTS: MARINE,
MOLLUSK PICTURE ID. A = _______________ B = _________________ C = _________________ stomach Digestive gland heart.
Phylum Mollusca. General Characteristics 50,000 or more species of molluscs. They share 3 major sets of characteristics: –Body enclosed by a blanket-like.
Mollusca 4 classes near shore 4 classes near shore Gastropoda- The snails Gastropoda- The snails Polyplacophora- Chitons Polyplacophora- Chitons Bivalva-Two.
Phylum Mollusca. Mollusks 100,000 species “soft bodied animals” Eumatazoans, bilaterally symmetrical, triploblastic coelomates Mostly marine, some freshwater,
37-1 Mollusks Invertebrates like clams, snails, slugs and octopuses Phylum mollusca 112,000 species. Some are predators, others are filter feeders.
1 Dissection of the Clam Venus mercenaria copyright cmassengale.
Mollusk Characteristics Unsegmented soft body Mollusks have 3 main parts Visceral mass: contains the internal organs Modified Foot: –Muscular foot and/or.
CLAM DISSECTION. CLAMS ARE: Invertebrates- no backbone Protostomes- blastopore becomes mouth determinate spiral cleavage.
Mollusks. Phylum Mollusca Includes snails and slugs, oysters and clams, and octopuses and squids. BivalvesNautilus.
Ch. 27 Phylum Mollusca Soft bodies Soft bodies Internal or external shell Internal or external shell Body Plan w/ 4 parts: Body Plan w/ 4 parts: Foot Foot.
November 3-4, 2014 Phylum Mollusca. Conch Squid Nudibranch Chiton Clams, Oysters Octopus.
PHYLUM MOLLUSCA “MALACOLOGY” The study of molluscs not drab and mundane as found on the N.A. continent of the eight classes, only 3 are common.
Trends in Animal Evolution Acoelomate Pseudocoelomate Body cavity endoderm mesoderm ectoderm Coelomate.
Phylum Mollusca. Protostomes Protostomes Lophotrochozoan group Lophotrochozoan group Eucoelomates (coelomates) Eucoelomates (coelomates) Tridacna squamosa.
Chapter 10, Phylum Mollusca. Characteristics of Phylum Mollusca Bilaterally Symmetrical, Protostome development, and Coelomate body cavity. Molluscs have.
Phylum Mollusca. Molluscan diversity.
Phylum Mollusca Second largest animal phylum (> 100,000 species) Oysters, snails, clams, octopus, squid Two unifying characteristics –External calcium.
Phylum Mollusca “soft bodied” animals Ch 12. Protozoa ProtostomesDeuterostomes Coelomates Acoelomates Mollusca Crustacea Arachnida Insecta Annelida Echinodermata.
Phylum Mollusca. Bi-lateral Bi-lateral 3 body parts 3 body parts Eucoelomates (coelomates) Eucoelomates (coelomates) Tridacna squamosa Tridacna gigas.
Mollusks Phylum Mollusca. Advanced Invertebrates Phylum Mollusca Characteristics –1. Visceral Mass: soft bodied portion containing internal organs –2.
Parts Quiz Practice. This space that you see when you open the clam’s shell is the ______________ mantle cavity.
Gastropods and Pelecypods How to make a living inside your shell.
Mollusks BiologyJones. Mollusks Term Mollusk means soft Phylum called Mollusca Over 47,000 species Large range in size from tiny snails of 5 mm to giant.
King of Camouflage – Nova
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