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Unit 2 Diversity of Life
Chapter 10 Mollusks, Arthropods, and Echinoderms
Section 1 and 5   Mollusks and Echinoderms

Final Update     3/27/2006     
 

Previous: Worms       Next: Arthropods and Insects

Teacher Resources           Student Extra Credit

Day 1
Topic  Mollusks
Objectives
Describe the features of mollusks: soft fleshy body with most covered by a hard shell.
Describe the mantle as a thin membrane the covers the soft fleshy body of a mollusk.
Name the squid and the octopus as two mollusks with well-developed nervous systems.
Describe the function of the snail's radula to scrape food from plants and rocks.
State Goals
Classwork-Homework
 filmreel.gif (313 bytes)  VCR: Eyewitness Shell
TEC
Resources

    

Day 2
Topic  10-1 Mollusks
Objectives
Describe different types of mollusks and their features.
Describe different types of echinoderms and their features.
Observe details of mollusks and echinoderm shells.
State Goals
Classwork-Homework
notebook33.gif (266 bytes)  Mollusks Vocabulary
Mollusk: soft-bodied organism
Mantle: thin membrane that covers a mollusk's organs
Radula: rough, tonguelike organ of a snail

readme.gif - 802 Bytes Prentice Hall 328-333

 Pencil.gif - 434 Bytes Workbook 137-140
TEC
Resources
Magnify0b.gif - 341 Bytes  Lab: Eye to Eye With Garden Snails

Note02.gif (247 bytes) Visual Shell Kit  A Mollusk Identification OnLine Reference Book.  Great Site!!!

 

Day 3
Topic
Objectives
Identify different types of shells and ocean animals.
State Goals
Classwork-Homework
 Lecture.gif (2227 bytes)  Shell Bingo pages 38-46
TEC
Resources

 

Day 4
Topic  Snails  We are no longer allowed to import land snails into the state of Illinois.
Objectives
To observe, measure, and describe the characteristics of a snail.
State Goals
Classwork-Homework
Lecture.gif (2227 bytes) Trailing the Snail
Lecture.gif (2227 bytes)  Background Information page 1
           Care & Feeding page 2
Magnify0b.gif (341 bytes)  Observing Physcical Features page 5

Pencil.gif - 434 Bytes   Snail Information   Read about snails and answer questions.

   How to Draw a Snail
TEC
Resources

 

Day 5
Topic  Mollusks
Objectives
Name four animals classified as mollusks.                                                   
Learn about snails.
State Goals
Classwork-Homework
notebook33.gif (266 bytes) Mollusk Vocabulary
Bivalve: 2 shells
Gastropods: stomach foot
Cephalopod: Tentacled mollusks; shell inside body (except Nautalus)
                         
notebook33.gif - 266 Bytes  Bivalves, Cephalopods, Gastropod Characteristics                         
 

Bivalves

Gastropods

Cephalopods
Outer Covering Matching shells Spiral shells None except Nautilus
Body Features Muscular foot Head, eyes, tentacles Siphon, gills, eyes, tentacles
Movement Muscular foot Muscular foot Mantle
Examples Clam, Oyster Snail, Slug Squid, Octopus

 filmstrip.gif - 6075 Bytes  Filmstrip: Mollusks 

Pencil.gif - 434 Bytes Mollusk Characteristic Chart

Pencil.gif - 434 Bytes Mollusk Crossword Puzzle and WordSearch
TEC
Resources
Note02.gif (247 bytes) Mollusk Information Mr and Mrs Smith's
Note02.gif (247 bytes) Shell Pictures pages 36-39

 

Day 6
Topic  Cephalopods
Objectives
Identify characteristics of Squid, Octopus, and Nautilus.
State Goals
Classwork-Homework
Pencil.gif (434 bytes)  Giant Squid   Article and Questions

Pencil.gif (434 bytes)  Squid Diagram

star.gif (2279 bytes) Octopus Information & Questions

star.gif (2279 bytes) Nautilus Information & Questions

star.gif (2279 bytes) Chiton Information & Questions

star.gif (2279 bytes) Octopus Shape Book
TEC
Resources
Note02.gif (247 bytes) Bigfin Squid New Species
Note02.gif (247 bytes)  Squid Information Page

                                 

Day 7
Topic Squid Dissection
Objectives
Examines the unique features which have allowed the squid to adapt and thrive.
State Goals
Classwork-Homework
 Magnify0b.gif - 341 Bytes  Squid Dissection & Octopus Tentacle Lab
 Magnify0b.gif - 341 Bytes    Squid Dissection
Magnify0b.gif (341 bytes)    Squid Dissection: From Pen to Ink
Magnify0b.gif - 341 Bytes    Squid Lab
Note02.gif (247 bytes) Diagram of Giant Squid Architeuthis
TEC
Resources

 

Day 8
Topic  Virtual Field Trips
Objectives
Learn about the three classes of mollusks.
Use the internet to find information about mollusk species.
State Goals
Classwork-Homework
 Pencil.gif - 434 Bytes  Mollusk Discovery
TEC
Resources


                      starfish.gif (6356 bytes) Echinoderms

Day 9
Topic  
10-5 Echinoderms
Objectives
Name three echinoderms. 
List the characteristics of echinoderms.
Name the functions of tube feet.
State Goals
Classwork-Homework
notebook33.gif - 266 Bytes  Echinoderms
Brittle Stars
Sand Dollar
Sea Cucumber
Sea Urchin
Starfish (sea star)
Sea Lilies (Crinoids)

notebook33.gif - 266 Bytes  Echinoderm Characteristics

Spiny Skin (lumps or needles)
Endoskeleton
Rays (arms) around a central points
Do not have circulatory, excretory, or respiratory system
Have a nervous system
No Brain

 readme.gif (1442 bytes) Prentice Hall 358-361

Workbook 149-150
TEC
Resources
 Note02.gif - 247 BytesZoology Study Charts  Teaching charts of invertebrate animals

 

Day 10
Topic Echinoderms
Objectives
Identify and describe the characteristics of the Phylum Echinodermata.
Describe the body plan and distinguishing features of a Echinoderm.
Compare and contrast the different cell types found in Echinodermata.
Identify the seven essential functions necessary for the survival of any Echinoderm.
Recognize and identify representative Echinoderms.
Discuss the importance of Echinoderms to humans as well as to nature.
State Goals
Classwork-Homework
notebook33.gif (266 bytes)  Echinoderm Groups   Chart of Echinoderm classes.

Note02.gif (247 bytes) CRINOIDS
Crinoids were animals attached to the sea floor by flexible, rooted stalks. When they died, they usually broke loose and drifted away. The crinoid fossils found in the Legrand Quarry are remarkable because many of them were preserved nearly intact. The reason this happened is that nests of crinoids were rapidly buried in shallow depression that protected their bodies from currents. Lime-rich mud preserved their remains and hardened them into stone. The limestone slabs found near Legrand contain fossilized crinoids and other sea animals in such abundance and detail that they have fascinated scientists around the world.

360 million years ago (in the Paleozoic era or Mississippian period) North America was located near the equator. Much of the land - including what's now Iowa - was submerged under shallow tropical seas. These warm waters teemed with countless creatures.


The inland seas reportedly swelled and retreated, alternately building up and exposing layers of sediments, sandwiching the remains of crinoids and other living things, and casting their impressions in stone.


Crinoids, commonly called "sea lilies" or "feather stars," belong to the echinoderm family (bodies covered with plates of calcite that form a skeletal structure) along with starfish, sand dollars, sea urchins, and sea cucumbers.


Some crinoid species crawled, some swam, and others attached themselves to rocks on the sea floor. They fed by means of cilia, located along grooves in their arms and branches, that brought tiny marine life to the mouth. Today, crinoids live in all the world's oceans, and where they're found, their abundant numbers and vibrant colors give the appearance of an underwater flower garden.


Animals get food directly from plants or other animals that eat plants. Crinoids are animals because they eat other marine life. Plants, on the other hand, make food by drawing energy from the sun and salts from water.


Crinoids have cup-shaped bodies with at least five feathery arms atop column sections that form cylinders and spirals. These shapes seem to radiate from a central point. This is called radial symmetry.


filmstrip.gif (6075 bytes)Filmstrip: Spiny-skinned Animals and Sea Stars and their Relatives

readme.gif (802 bytes) Echonoderms

Pencil.gif (1165 bytes) Echinoderm Crossword and WordSearch
TEC
Resources
Note02.gif (247 bytes) Crinoid Diagram
Note02.gif (247 bytes) Sea Lilies on the Run
Computer.gif (1114 bytes) Echinoderms 5 pages with 122 pictures

 

Day 11
Topic  Starfish Observation
Objectives
Observe characteristics of a starfish.
Label diagrams of starfish.
State Goals
Classwork-Homework
notebook33.gif - 266 Bytes  Starfish Characteristics
Tube Feet: used for movement and getting food

 Magnify0b.gif - 341 Bytes  Starfish Observation Activity
TEC
Resources

 


 Teacher Resources

Pencil.gif - 434 BytesActivities  Magnify0b.gif - 341 BytesInvestigations  crayon0a.gif - 328 Bytes Art  Note02.gif - 247 Bytes Resources  SchoolBus5.bmp (6174 bytes)Field Trips  Earth.gif - 6650 Bytes Web Sites 
 ABALONE
 Pencil.gif - 434 Bytes  Northern Abalone Worksheet Use Abalone Links to search for information.
AMMONITES
 Earth.gif - 6650 Bytes  Ammonites   These extinct marine animals, which thrived in the Paleozoic and Mesozoic Eras, some 400 to 65 million years ago, were cephalopods, and are thus related to squid, octopus, cuttlefish, and the chambered nautilus.  Visit the American Museum of Natural History's exhibit.
BIVALVES
 Note02.gif - 247 Bytes  Bivalve Anatomy  Clams, Scallops, and Oysters
 Note02.gif (247 bytes) Bivalves: Mollusks That Matter  Clam Diagram to Label
CEPHALOPODS
 Pencil.gif - 434 Bytes  A Fossil Time Line  Create a fossil range chart for ammonites and their relatives in the Class Cephalapoda, which includes modern species such as octopuses, squids, cuttlefish, and nautilus. You will then use the information in the chart to determine the age of particular rocks and to predict which rock might contain oil.
 Earth.gif - 6650 Bytes  Cephalopods in the News
 Earth.gif - 6650 Bytes  Cephalopods: Octopus, Squid, and Cuttlefish   The cephalopods are unusual invertebrates because most lack a hard shell. The squid and cuttlefish have small shells that are located inside of the body, rather than outside. The octopus, on the other hand, has lost its shell completely. All of the cephalopods are marine animals and all are carnivores. Visit the exhibit and the national Aquarium in Baltimore.
 Earth.gif (6650 bytes) Natuiloids: The First Cephalopods
 Earth.gif - 6650 Bytes  Selected Cephalopod Species  pictures
 Earth.gif - 6650 Bytes  The Cephalopod Page
CLAMS
 Note02.gif - 247 Bytes  Clam Dissection Pictures
 Earth.gif - 6650 Bytes  Virtual Clam Dissection
CRINOIDS
 Pencil.gif (1165 bytes) Crinoids Crossword Puzzle
 Earth.gif (6650 bytes) Crinoid Body Parts
 DISSECTION
 Magnify0b.gif - 341 Bytes  Clam Dissection  Directions, Lab Questions, and Photo Quiz.
 Magnify0b.gif (341 bytes)  Helix Snail Dissection
 Magnify0b.gif - 341 Bytes Squid Dissection & Octopus Tentacle Lab
  Starfish Dissection
  Starfish OnLine Dissection Pictures
  Starfish and Sea Urchin Dissections
ECHINODERMS
 filmstrip.gif (6075 bytes) Echinoderm Slideshow
 Earth.gif - 6650 Bytes  Echinoderm   Echinoderms have a few important aspects in common. They have bony ossicles in their body. They have a water-vascular system which pumps water through the madroporite. They also have small jaws that are supported by the water-vascular system. And they have tube feet which they use to attach to objects, for protection, as well as to obtain food. They have radial symmetry and most can regenerate lost limbs.
 Earth.gif - 6650 Bytes  Echinoderms  THIS SITE HAS IT ALL!!!!
 Earth.gif - 6650 Bytes  Introduction to Echinodermata   From starfish to sea cucumbers.
 Earth.gif - 6650 Bytes  Ocean Animals: Echinoderms   Echinoderms are radially symmetrical animals that are only found in the sea (there are none on land or in fresh water). Echinoderms mean "spiny skin" in Greek. Many, but not all, echinoderms have spiny skin. There are over 6,000 species. Echinoderms usually have five appendages (arms or rays), but there are some exceptions.
 Earth.gif - 6650 Bytes  Wonders of the Sea: Echinoderms   The phylum Echinodermata , which contains about 6000 species, gets its name from the Greek, literally meaning "spiny skin."
KEYS, GUIDES, and CHECKLISTS
 Note02.gif - 247 Bytes  Brachiopod Key  Use a dichotomous key.
 Note02.gif - 247 Bytes  Common Shells of the Jersey Shore
 Note02.gif - 247 Bytes  Identifying Land Snails   A dichtomous key for land snails.  Includes links for pictures of snail species.
 Note02.gif - 247 Bytes  Visual Shell Kit  A Mollusk Identification OnLine Reference Book.  Great Site!!!
LANGUAGE ARTS
 bookpages.gif (1592 bytes) The Cay  All topics that go along with The Cay
MOLLUSKS
 Pencil.gif (434 bytes)  Animals that Live in Shells  4 pages
  Pencil.gif - 434 Bytes  Mollusks Chart  Gastropods, Bivalves, and Cephalopods
 Pencil.gif - 434 Bytes  Mollusk Discovery  Internet Activity
 filmstrip.gif (6075 bytes) Mollusk Slideshow
 Note02.gif - 247 Bytes  Amazing Mollusk Facts
 Note02.gif - 247 Bytes  Mollusks of Illinois   List of mollusks with links.
 Note02.gif - 247 Bytes  Taxonomy of the Phylum Mollusca  Great site.  Lots of pictures.
 Earth.gif (6650 bytes) Mollusk Clip Art   Sea Shells    Black & White clip art.  Fish  Have octopus
MUSEUMS
 SchoolBus5.bmp (6174 bytes)Houston Museum of Natural Science
MUSSELS
 Pencil.gif - 434 Bytes Zebra Mussel Mania  138 page unit.  Alien Invaders Worksheet p.82,  Button Story p.87-88, Life Cycle p.114-115, Freshwater Mussel Information, Diagrams, and Life Cycle p.117-120
 Earth.gif - 6650 Bytes Mucket Mania: The Mussel Industry in Arkansas   The button industry.
 Earth.gif - 6650 Bytes Zebra Mussels
OCTOPUS
 Magnify0b.gif - 341 Bytes Octopus Communication
 Magnify0b.gif - 341 Bytes  Straw Submarines  Make a diving octopus.
 Note02.gif (247 bytes) Octopus Fact File   p.8 use this as idea for students to pick another sea creature to make a fact file on.
 Earth.gif (6650 bytes)  About Octopi
OYSTERS
 Magnify0b.gif (341 bytes)Oyster Anatomy Worksheet
 Magnify0b.gif - 341 Bytes Pencil.gif - 434 Bytes  Oysters Everywhere  Set up an aquarium for oysters and three internet activities.
 Earth.gif - 6650 Bytes  The Perfect Pearl   Travel to exotic locations around the world where pearls are grown and harvested.
QUIZES & TESTS
 braininjar.gif - 1615 Bytes Squid Anatomy Quiz
SAND DOLLARS
 Earth.gif - 6650 Bytes  How to Preserve a Sanddollar   One of the keys to cleaning a live sandollar is also very often the least known.  In order to get a sanddollar to bleach white it is important to soak it in fresh water first. Here are the steps you should follow in order to preserve live sanddollars.
SEA LILIES
 Earth.gif (6650 bytes) Sea Lilies on the Run   Sea animals known as stalked crinoids have joined the ranks of those that can run.
SEA URCHINS
 Earth.gif - 6650 Bytes  Sea Urchins  Sea urchins are a group of marine invertebrates that today can be found in almost every major marine habitat from the poles to the equator and from the intertidal zone to depths of more than 5,000 m. There are around 800 extant species and the group has a long and detailed fossil record stretching back about 450 million years ago to the Late Ordovician Period.
SHELLS
 Pencil.gif (434 bytes)  Sea Shell Identification Page 1
 Magnify0b.gif (341 bytes)  Sea Shell Mapping
 Note02.gif (247 bytes)  Shell Pictures pages 36-39
 Earth.gif - 6650 Bytes Shells Often Found on Assateague Beach   Pictures of mollusks with links to pictures and information found on the coast of Virginia.
SNAILS
 Pencil.gif - 434 Bytes  Mitch the Rain Forest Snail  28 page unit
 Magnify0b.gif - 341 Bytes  Lab: Eye to Eye With Garden Snails
 Magnify0b.gif - 341 Bytes  Trailing the Snail  Background information, Care and feeding, Snail Experiments and a diagram.
 Earth.gif - 6650 Bytes  All About Snails
 Earth.gif - 6650 Bytes  Anatomy of a Snail  Information and great color pictures about snails.  Includes movies!!
SQUID
 Pencil.gif (434 bytes)  Giant Squid   Article and Questions
 Pencil.gif (434 bytes)   Squid Diagram  Enchanted Learning
 Magnify0b.gif - 341 Bytes  Squid Dissection
 Magnify0b.gif - 341 Bytes  Squid Dissection & Octopus Tentacle Lab
 Note02.gif (247 bytes) Bigfin Squid New Species
 Note02.gif (247 bytes)  Squid Information Page  Enchanted Learning site.
 Earth.gif (6650 bytes)  Giant Squid In Ireland Good information site.
 Earth.gif - 6650 Bytes  In Search of the Giant Squid   This on-line exhibit explores and interprets the mystery, beauty and complexity of giant squids - the world's largest invertebrates and is based upon material presented in the Smithsonian's National Museum of Natural History's exhibit "In Search of Giant Squids "
STARFISH
 Pencil.gif - 434 Bytes  Sea Star Worksheet Use Sea Star Links to answer questions.
 Magnify0b.gif - 341 Bytes  Starfish Observation Activity

 

 

Student Extra Credit

 star.gif - 2279 Bytes Extra Credit star.gif - 2279 Bytes
 star.gif - 2279 Bytes  Invent a Key to Echinoderms  Print out the activity and pictures and create your own dichotomous key.
 star.gif - 2279 Bytes  Invertebrate Report   Choose an invertebrate and research for information.
 star.gif - 2279 Bytes  Marine Biology Coloring Book   Gastropods p.31 and 32
 star.gif - 2279 Bytes  Mollusks Coloring Diagram from Biology Coloring Book
 star.gif - 2279 Bytes  Northern Abalone Worksheet Use Abalone Links to search for information.
 star.gif - 2279 Bytes  Sea Star Worksheet Use Sea Star Links to answer questions.
 star.gif - 2279 Bytes  Snails: An Internet Assignment  Print out the worksheet and go to the links to find information about the apple snail and the garden snail.
 

 

Previous: Worms       Next: Arthropods and Insects