Prentice Hall 9-3 Cnidarians: SmithLifeScience

Unit 2 Diversity of Life
Chapter 9 Sponges, Cnidarians, and Worms
Section 9-3 Cnidarians

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Day 1

Topic 9-3 Cnidarians

Objectives
Name four cnidarians.
Describe the body systems of cnidarians.
Analyze body symmetry and feeding patterns.
Describe body systems in worms.

State Goals

Classwork-Homework
On the Board
Cnidarians: invertebrate animal with stinging cells and a hollow body
Polyp: Cuplike form of a cnidarian
Medusa: Umbrella-like form of a cnidarian
Tentacles: long, thin armlike structures

On the Board

Cnidarian Classes

Jellyfish	Class: Schyphozoa
Coral and Sea Anemones	Class: Anthozoa
Hydra & Portuguese Man-0-War	Class: Hydrozoa

BrainPopIcon.bmp (19574 bytes) Cnidarians

Prentice Hall 307-311

Globe Fearon 9-2 What are Cnidarians

Lesson Review 9-1 What are Cnidarians

TEC

Resources
Order hydra and daphnia; depression slides

Day 2

Topic Polyps and Medusas

Objectives
Explain how siphonophore is able to feed, defend and reproduce.

State Goals

Classwork-Homework

Cnidarian Notes

On the Board
Cnidocyte: a stinging cell in a cnidarian
Nematocyst: the stinging mechanism in a cnidocyte
Venom: poison

On the Board

Cnidarian Names

Jellyfish	Coral & Sea Anemones	Hydra & Portuguese Man-0-War
Class: Schyphozoan	Class: Anthozoan	Class: Hydrozoan
Box	Brain Coral	Green Hydra
Moon	Tube Coral	Brown Hydra
	Staghorn Coral
	Lettuce Coral
	Fire Coral
	Sea Fan

Cnidarians

On back of Cnidarian Notes divide paper into 1/3 Label the class and draw examples

        Schyphozoan: Jellyfish
        Anthozoan: Sea Anemone, Coral
        Hydrozoan: Hydra, Portuguese Man-0-War

Cnidarian Wordsearch has answers for puzzle

Cnidarian Crossword Puzzle

TEC

Resources

Sea Anemones Diagram and Information

Day 3

Topic Coral

Objectives
Identify the body forms of cnidarians and classify cnidarians as a medusa or a polyp.
Students will learn about coral and decide whether coral is a rock, plant, or animal.
Explain how cnidocytes get food.
Identify the two cell layers of cnidarians.
Explain why cnidarians are more complex than sponges because their cells are organized into tissues.
Create a model of a coral reef.
List different common names of coral.

State Goals

Classwork-Homework

BrainPopIcon.bmp (7158 bytes) Coral

Coral Reef Foldable Book Directions
Make a 9-Tab foldable book about coral. Use to record information.

CORAL REEFS
What Is Coral #1	Coral Types #2	Coral Names #3	Reef Types #5	Reef Community #6	Reefs In Danger #7	Food Chain #9	Reproduction #11	? #12

Paperpencil.gif (4347 bytes) What is Coral? #1
Coral is an animal.
Existed 500 Million years.
Animal lives inside a home made of its own secretions.
Coral develop in shallow, warm (70 and 85 ° F (21 - 30 °C), clear, ocean water.
The reef is formed from coral polyps that leave behind a skeleton of limestone.
Coral reef habitats are rich in life. Contain 25% of ocean's species.

Paperpencil.gif (4347 bytes) Coral Types #2

Hard corals	Brain coral and Elkhorn coral	Hard, limestone skeletons; Hard corals form the basis of coral reefs.
Soft coral	Sea fingers and Sea Whips	Soft coral does not build reefs.

Paperpencil.gif (4347 bytes) Coral Names #3
List different names of coral.

Blue Coral	Brain Coral	Staghorn	Sea Fan
Sea Fingers	Sea Whips	Lettuce	Plate Pillar
Pacific Coral	Potato Chip Coral	Mushroom Coral	Lace Coral
Fire Coral	Crust Coral	Leather Coral	Lichen Coral
Pink Coral	Black Coral	Wire Coral

Coral Reef Piano Fold Book #4
Draw 4 Corals: Sea Fan, Elkhorn, Flower, Brain,
Coral Diagram

TEC

Resources

Map of Bermuda Coral Map

Flower Gardens of Coral Reefs Describes life at different levels on a coral reef.

Pacific Coral Reef Coloring Book Neat border for room.

Day 4

Topic Coral Reefs

Objectives
Read for information and label a diagram.

State Goals

Classwork-Homework
Paperpencil.gif (4347 bytes)

Types of Reefs: #5

Fringing reefs	Reefs that form along a coastline. They grow on the continental shelf in shallow water.
Barrier reefs	Grow parallel to shorelines but farther out. Usually separated from the land by a deep lagoon. Form a barrier between the lagoon and the seas impeding navigation.
Coral Atolls	Rings of coral that grow on top of old, sunken volcanoes in the ocean. They begin as fringe reefs surrounding a volcanic island. Then, as the volcano sinks, the reef continues to grow. Eventually only the reef remains.

Filmstrip: Cnidaria

Cnidarian Piano Fold Book
Draw other Cnidarians: Jellyfish, Sea Anemone, and Portuguese Man-O-War

TEC

Resources
Coral Reefs: Science Weekly Teacher Notes

Coral Reefs: Science Weekly Add to Coral Reef Piano Fold Book

Day 5

Topic Coral Reefs

Objectives
List the three types of reefs.
List members of a coral reef community.
List reasons why coral reefs are in danger.
Understand that coral reefs are formed by coral animals.
Understand the conditions corals need to grow.
Draw a food web of a coral reef.

State Goals

Classwork-Homework

Who's Who On a Coral Reef
Paperpencil.gif (4347 bytes) Coral Reef Community #6
Put all animals on board.
Have kids choose 10 living things to write under tab 4.
You can add more!

Sponges	Black Tip Reef Shark	Giant Grouper	Clown Fish
Eel	Angel Fish	Red Snapper	Scorpion Fish
Sea Birds	Clams	Sea Stars	Crabs
Shrimp	Lobsters	Turtles	Sea Snakes
Snails	Octopus	Scallops	Algae
Sea Slugs	Angel Fish	Sea Urchin	Zooplankton
Phytoplankton	Lumphead Wrasse

Treasures of the Great Barrier Reef Dichotomous Key of Fish
Marine Life Jellyfish Coloring More Jellyfish Drawings

Paperpencil.gif (4347 bytes) Coral Reefs in Danger #7
Write 7 threats on board.
Discuss each one.
Add to Coral Book

30% of coral reefs worldwide are "severely damaged," and up to 60% could be lost by 2030

Major Threats to Coral Reefs
Water Pollution	from sewage and agricultural runoff
Careless collecting of coral specimens	reefs and species damaged or destroyed
Sedimentation	when silt or sand from construction or mining projects muddies the waters of a reef and kills coral, which needs light to live
Coastal Development	loss of habitat
Destructive fishing practices	Cyanide fishing, Overfishing, Blast fishing
Increased Carbon Dioxide	Makes skeleton weaker
Ozone Depletion	Ultraviolet radiation in shallow areas

Coral Reef Piano Fold Book #8
Choose 5 more coral reef community members to draw on cover.

TEC

Resources

Coral Reef Coloring Page

Coral Colors

Coral Reef Plants

Reef Fish Nice reference for fish colors

Day 6

Topic Real Life Situations

Objectives
Students will be able to construct a pyramid of numbers using data from a Bermudian coral reef.
Introduces specific human activities that can have an impact on coral reefs world wide

State Goals

Classwork-Homework
BrainPopIcon.bmp (7158 bytes)

Food Chains
Paperpencil.gif (4347 bytes)

Coral Reef Food Chain #9

Building a Bermudian Coral Food Pyramid

Use the food web to draw a food chain with coral in it.

Discuss: Coral Reef Food Web

Reefs at Risks
Explain the scenarios are factual.
Read the following scenario to the class.

Overfishing in the Philippines, Guam, and Indonesia has caused the disappearance of red snapper and giant grouper from entire areas. Without these predators in the area, the sea urchin population has increased. Sea urchins kill live coral as they feed on algae. Eventually, algae growth overtakes the coral, and new polyps cannot grow. Explain the effect these changes might have on the food web you have made.

State what the problem is.
Overfishing

Name the populations that will decrease.
Red Snapper and Grouper will decrease.
Coral will decrease.
Algae will decrease

Name the populations that will increase.
Sea urchin

Will the reef survive?

TEC

Resources

Cnidarian Crossword Puzzle

Activities Art Investigations
Resources Field Trips Web Sites

ANIMALS INVERTEBRATES

Animal Ethics and Marine Studies

Invertebrate Critter Cards Cnidarians, Annelids, Mollusks, Echinoderms, and Arthropods. Match pictures to Phylums.

Invertebrate Research Packet

The Shape of Life 44 pages Good phyla activity. Phyla Comparison Chart p.24

Taxonomic Twisters Worksheet Animal investigation activity. Nice worksheet!

Invertebrate Lecture Notes

Kingdom, Plants, Invertebrate, Vertebrate Charts with answers

Sea Life Student Fact Sheet

Survey of the Animal Kingdom From sponges to chordates

Wonderful Wacky Water Critters

Animal Diversity Web

CNIDARIANS

Cnidaria

Cnidarians Characteristics and examples of stinging-celled animals.

Cnidaria Home Page

Cnidarians: Simple but Deadly Animals

Introduction to Cnidaria Jellyfish, corals, and other stingers

CORAL

Coral and Coral Reefs Map of oceans for identifying coral sites.

Coral Polyps and Coral Reefs Students will learn about coral and decide whether coral is a rock, plant, or animal.

Who Eats Whom In a Bermudian Coral Reef?

Growing Coral Students will observe the growth of crystals that develop in a way similar to how coral polyps create their calcium carbonate cups.

Sexy Coral Reef and I Want My Own Space In these activities you will learn about some of the adaptations that have helped insure the success of the next generation of coral.

What If the Reef Dies This lesson will provide opportunities to model, using simple laboratory materials, some aspects of reef ecology. In addition, student conclusions drawn from the activities will be referenced to known data. Finally, students will be asked to consider what they can do to insure reef survival.

Bermuda Reef Diorama In this activity you will make a model of a coral reef so that you can see for yourself all the organisms living in this ecosystem.

Build a Reef While building a coral reef, you will discover the organisms that make up this special ecosystem.

Coral Reef Coloring Page

Coral Reefs, Polyps, and Heads Build an individual polyp. Combine polyps to form head (colony)

Create a Coral Reef Build a Diorama with brain coral, sea fan, sea anenome, and sponge. Take it to the Next Level Add jellyfish, volcano sponge, finger coral, and tube sponge.

How Are Reefs Formed Coral Life Cycle Coloring Page

Coral Reef from Ask the Aquarium from Baltimore 2 page pdf

Coral Reefs: Science Weekly Neat 6 page magazine

Threats to Coral Reefs

Zooanthellae Zooxanthellae are unicellular yellow-brown (dinoflagellate) algae which live symbiotically in the gastrodermis of reef-building corals.

Bermuda's Coral Reefs

Coral: Ocean Oasis

Coral Reefs: Jumpstart

Coral Realm Fish and shark Encyclopedias and more!

Coral Reef PhotoBank

Corals and Anemones A Sea & Sky site.

Reef Relief: Protect Living Coral A group dedicated to protect coral.

DISSECTION

Animal Dissection: Where Do You Stand? Survey

HYDRA

Hydra: The Green Predator

How Does a Hydra Respond to Stimuli?

Hydra Bioassay This experiment measures the reaction of hydra to any toxic compounds present in fresh water. The test can be used to measure the toxicity of household water, industrial wastewater, and treated or untreated surface or ground water.

Hydra Lab

Hydra Lab Worksheet

Hydra vs. Daphnia Information and diagram. Setting up habitats. Food Chain Lesson. Observation of hydra and daphnia. Put animals together.

Hydras Great pictures!

Hydra Article and diagrams.

IMAGES

Jellyfish, Solitary Jellyfish, Portugese Man-O-War, Man-O-War, Rhizostomeae, Group, Glowing, Box Jelly

INVERTEBRATES

Marine Life Circle the Invertebrates Nice line drawings of sea urchin, jellyfish, sand dollar, crab, shrimp, sea star, clam, scallop, lobster, horseshoe crab, anemone, scallop, sea star, octopus

JELLYFISH

Jellyfish Coloring Pages

Jellyfish Lecture

Freshwater Jellyfish

Jellyfish A Sea Science site. Jellyfish diagram, life cycle diagram, and nematocyst diagram. Drawings of different species.

Know Your Jellyfish: Some Sting, Some Don't Great pictures of different jellyfish

KEYS, GUIDES, and CHECKLISTS

Invertebrate Key

LANGUAGE ARTS

Animal Imagery Similes and metaphors

PARASITES

Animal and Human Parasite Images

PLANKTON

Plankton During this activity, students will learn how to collect plankton and use microscopes to observe and identify it.

PORTUGUESE MAN-O-WAR

Portuguese Man-O-War Worksheet

SEA ANEMONE

Sea Anemone Coloring Sheet

Sea Anemone Diagram

Sea Anemones Basic information and pictures from Marine Biology

Sea Anemones Information and pictures.

WEB QUESTS

Case of the Changing Bering Sea Environment Introduction

Coral Reef Fish Count

Data Sheet

Creatures of the Deep Investigate the animals and answer the questions.

Extra Credit

Have the students create a collage of photos of different types of coral to create their own reef. You can use the pictures from the Coral Reef Photobank. They can create their virtual reef based on the region, or they can make a global composite reef.

Coral Reef: Did You Know? Cards Print out 10 "Did You Know Cards." Research facts and information about coral Reefs. Write your facts and information on the cards.

Geography Worksheet Use an Atlas and find the answers.

Great Barrier Reef Read the book fill in the chart and answer the questions.

Introduction to Cnidaria Jellyfish, corals, and other stingers

Invertebrate Coloring Page Jellyfish, Coral, Sponge, Scallop, Starfish, and sea Squirts.

Jellyfish and Sea Anemone Comparison Chart Ways they are alike and different.

Marine Life Matchup

Ocean Diorama Use the patterns to create a shoe box diorama of the ocean

Phylum Study Choose a phylum, choose an animal draw a picture, write a report, and create a list.

Reef Scavenger Hunt Worksheet

Research 6 animals have been identified as the most dangerous in Australia. You are to investigate each animal and rank them from most dangerous to least dangerous.

Sea Anemone and Sea Star Coloring Page Coloring sheet from the Monterey Aquarium

Shells and Coral Coloring Page Coloring sheet from ABC Teach