Invertebrate Phylum Mollusca (Mollusks).

Slides:

Advertisements

Similar presentations

PHYLUM MOLLUSCA.

Advertisements

Phylum Mollusca Chapter 13 Part 1 of 3.

Phylum: Mollusca Mollusks are soft-bodied animals that usually have an internal or external shell.

Mollusk Features Complete digestive system Bilateral symmetry Move on muscular foot 3 part body plan –A) Radula tongue-like organ to scrape food –B)

Mollusks Bivalves-scallops Cephalopod Chambered Nautilus & Squid Polyplacophora-Chitin.

Ch. 35 – Mollusks & Annelids

clams, snails, slugs, and octopuses

MOLLUSKS: Section 27 – 1 Section 27 – 1 Slugs, snails, and animal that once lived in shells in the ocean or on the beach. Slugs, snails, and animal that.

Phylum Mollusca.

Section 3: Mollusks Mollusks are coelomates with a muscular foot, a mantle, and a digestive tract with two openings. K What I Know W What I Want to Find.

Chapter 9 The Mollusks Abalone. Mollusks  Soft bodied  Include the shipworm, snail, clam, mussel, oyster, scallop, abalone, squid, octopus, cuttlefish,

Mollusks Phylum: Mollusca Sea Snail Cockle Shell Green Mussel Octopus.

Stop 6: Phylum mollusca.

Mollusks Kingdom Animalia Phylum Mollusca Class Gastropoda Class Bivalvia Class Cephlapoda.

Chapter 27 Mollusks and Segmented Worms

MOLLUSKS: Slugs, snails, and animal that once lived in shells in the ocean or on the beach. Slugs, snails, and animal that once lived in shells in the.

Mollusks Section Soft-bodied Animals Snails, slugs, oysters, clams, scallops, octopuses, squid A larval stage called a trochophore Second largest.

Chapter 29: Mollusks and Annelids

Phylum: Mollusca Gastropods, Bivalves & Cephalopods.

MOLLUSCSMOLLUSCS. MOLLUSCSMOLLUSCS - Molluscs Origin of the word mollusc: From the Latin word Mollis meaning soft Animals in this phylum include: Snails,

Snails, slugs, oysters, clams, Scallops & squids.

Mollusk & Segmented Worms Chapter 27. Mollusk: Phylum Mollusca Consist of slugs, snails & animals that once lived in shells on the beach Consist of slugs,

CLAMS,SQUIDS, OCTOPUSES, SNAILS, SLUGS, ETC.

PHYLUM MOLLUSCA Mollusks Mollusks (Mollusca) –extremely diverse –characterized by a coelom great economic significance –pearls –mother of pearl economic.

MOLLUSKS NOTES #9 Gastropods, Bivalves, Cephalopods,

Phylum: Mollusca Class: Polyplacophora Class: Bivalvia

37-1 Mollusks · Invertebrates like clams, snails, slugs and octopuses

Invertebrates: Phylum Mollusca

What is the job of adductor muscles in clams? Close the valves.

Phylum Mollusca “soft- bodied”. 4 Primary Classes –Class Gastropoda: Snails, conchs, slugs, sea slugs, sea hares, limpets, etc. (very diverse)

MOLLUSCA. Characteristics Class Gastropoda – snails, slugs Class Gastropoda – snails, slugs Class Cephalopoda – octopus, squid, nautilus Class Cephalopoda.

Unsegmented soft body Mollusks have 3 main parts -visceral mass, modified foot, & mantle Mollusks have a visceral mass (contains the organs) Mollusks.

Phylum Mollusca Soft – bodied invertebrates Clams, Octopus, Snails.

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.

Phylum: Mollusca Gastropods, Bivalves & Cephalopods.

Snails, Clams, Mussels, Squid, and Octopi

Mollusks Phylum Mollusca. Advanced Invertebrates Phylum Mollusca Characteristics –1. Visceral Mass: soft bodied portion containing internal organs –2.

Mollusk Characteristics Unsegmented soft body Mollusks have 3 main parts Visceral mass: contains the internal organs Modified Foot: –Muscular foot and/or.

Phylum Molluska. Characteristics of Mollusks Aquatic (freshwater, marine) & Terrestrial External or internal shell or no shell Size: small (i.e. grain.

Phylum Mollusca Examples: Snails, slugs, squid, clams, octopus, and scallops.

Mollusks. Mollusks  Include the following  Snails, slugs, oysters, clams, scallops, octopi, and squid  Second larges phylum in animal kingdom  More.

1. mantle- tissue that surrounds the internal organs, and secretes the shell in shelled mollusks. 2. radula- raspy tongue-like structure that is used for.

Chapter 27: Mollusks. I. Taxonomy Kingdom: Animalia – Phylum: Mollusca (soft)

CLASS: BIVALVIA Phylum: Mollusca. Characteristics of Mollusks Commonly called shellfish Over 100,000 species Most are soft-bodied and have shells Most.

Phylum Mollusca Class Bivalvia Class Gastropoda Class Cephalopoda

Mollusks. A. Mollusks - soft bodied invertebrates that have a mantle and a muscular foot. 1. Mantle - tissue that covers a mollusk’s body. 2. Have lungs.

WARM UP 1.List seven characteristics of roundworms.

Mollusks Kingdom Animalia Phylum Mollusca Class Gastropoda Class Bivalvia Class Cephlapoda.

Chapter 27 Mollusks and Segmented Worms. Chapter Mollusks –A. What is a Mollusk? 1. Slugs, snails, squids, and animals that once lived in shells.

Phylum Molluska C-27-4.

Mollusca Soft bodied animals.

Biodiversity- Mollusks

Bivalves - Clams, etc Gastropods - Conch, etc Cephalopods - Squid, etc

Phylum Mollusca species 2nd only to Phylum Arthropoda

Snail, oyster, squid, octopus, slug, chiton

Soft-bodied Animals More than 112,000 species

Phylum Molluska C-27-4.

Phylum Mollusca “Soft Body”.

Zoology Rainier Jr/Sr High School Mr. Taylor

Soft – bodied invertebrates Clams, Octopus, Snails

Ch. 37 – Mollusks & Annelids

Chapter 13.1 Mollusks.

TSW identify and describe the basic characteristics of mollusks

Polyplacophora Gastropoda Bivalvia Cephalopoda

Phylum Mollusca Yum Yum.

Presentation transcript:

Invertebrate Phylum Mollusca (Mollusks)

Vocabulary visceral mass = contains internal organs of digestion, excretion, and reproduction mantle = thin membrane that surrounds internal organs

Vocabulary Radula = tongue-like structure with teeth used to grate, cut, and scrape Torsion = visceral mass twists 180* in relation to head Siphon = fleshy tubes for movement of water in a mollusk

Characteristics true coelm * bilateral symmetry * two body openings * 3 body parts: head, muscular foot, visceral mass * most have shell secreted by mantle * gills for gas exchange with water * some have a radula for feeding

Three Major Classes

Gastropoda: "stomach foot" * single shell - snails, abalone, conch * no shell - nudibrachs, slugs * move by muscular contractions of foot * open circulatory system

Bivalvia: shell with "two valves” * clams, oysters, scallops * strong muscle for pulling shell and burrowing * no head or radula * filter food from water via gills; cilia move food to stomach

Cephalopoda: "head-foot” * octopuses, squid, nautilus * free swimming; predatory; tentacles with suckers * radula and sharp beak * large brain and advanced nervous system * closed circulatory system