Chapter #7

Simple Animals

Chapter 7.1 Notes

Traits of Animals

1. Animals can not make food

2. Most animals can move from place to place.

3. Animals have many cells. The cells make up tissues and organs that form systems.

4. Most animals have symmetry.

Symmetry1. Radial- around a circle

2. Bilateral- cut into two halves.

Radial SymmetryBilateral Symmetry

• Vertebrates- animals with a backbone.

• Invertebrates- animals without a backbone.

Animal Phyla (Phylums)

1. Stinging-cell

2. Soft-bodies

3. Spiny-skin

4. Chordates- the most complex

5. Jointed-leg

6. Sponges

7. Worms

Chapter 7.2 NotesSponges-simple invertebrates that have pores.1. Do NOT move about freely.2. Live attached to rocks3. Water enters through pores and leaves through

an opening4. Filter Feeders5. 2 cell layers thick. No tissue or organs.6. Have 3 cell typesa) Trap foodb) Cover and protectc) Make skeleton7. Reproduce sexually and asexually.

Stinging-cell animals- have hollow saclike bodies that lack organs.

1. Nematocysts- stinging cells

2. Tentacles- arm like parts

3. Radial symmetry

4. 2 cell layers

5. One opening called a mouth

6. Disc- structure they fasten to the bottom of ocean or rocks.

7. Have muscle and nerve cells

8. Most reproduce sexually

Sea AnemoneJelly Fish

Coral

Stinging cell Animals

Chapter 7.3 Notes

3 phyla of worms1. Flatworms- the simplest worms.

Examples: Tapeworm (parasite) and planarian (Free-living).

2. Roundworms- example: hookworms (parasite).

3. Segmented worms- most complex worms. Examples: earthworm (Free-living) and leeches (parasite).

Life Cycle of a Tapeworm

1. Pig or cows eat tapeworm eggs

2. Eggs hatch in pigs/cows intestine

3. Tapeworm enter blood stream

4. Form cysts

5. People eat undercooked meat

6. Tapeworms get in their intestine and grow

7. Body sections break off and leave the hosts body in solid waste.

Life Cycle of the Tapeworm

Tapeworm

Chapter 7.4 Notes

• Soft-bodied animals (Mollusc)- are animals with a soft body that usually have a shell inside or outside.

• Are invertebrates (no backbone).

• The body is covered by a thin, fleshy tissue called a mantle.

• Soft-bodied animals have a muscular foot for moving from place to place.

3 classes of soft-bodied animals (Mollusc)

1. Gastropods- snails and slugs. Have wide muscular foot. Have single shell or no shell.

2. Bivalves- clams, oysters, and scallops. Have 2 shells.

3. Cephalopods-octopus, squid, and cuttlefish. Squids and cuttlefish ave shells inside their bodies, octopus no shell.

Snail

Octopus

SLUG

Drawing Rules

1. Use white paper…no lines.2. Do NOT fold paper3. Put a title on your paper (Earthworm)4. Name, date, hour5. Label all parts6. Straight lines when labeling parts.7. Color8. Use a full sheet…draw big

Worked Cited• “simple Animals”. March 23, 2007.

http://www.earthseaspacemuseum.org/img/activities_ocean_img/sea_sponge.jpg

• “Coral”. March 23, 2007. http://www.waterencyclopedia.com/images/wsci_01_img0119.jpg

• “Radial Symmetry”. March 23, 2007. http://www.geocities.com/Omegaman_UK/symmetry/SNFLAKE.gif

• “Bilateral Symmetry”. March 23, 2007. http://teacher.scholastic.com/lessonrepro/lessonplans/profbooks/images/hearts.gif

• “Vertebrates”. March 23, 2007. http://www.edsci-affiliates.com/images/vertebrates_divider.jpg

• “5 kingdoms”. March 23, 2007. http://www.scienceclarified.com/images/uesc_06_img0326.jpg

• “Sea Anemone” March 26, 2007. http://www.britannica.com/ebi/article-9276965

• “Jelly Fish”. March 26, 2007. http://www.gomanzanillo.com/scubamex/1jelly.jpg

• “Sun Coral”. March 26, 2007. http://www.melevsreef.com/pics/0604/sun_coral_914pm.jpg

• “Tapeworm Lifecycle”. March 27, 2007. http://www.scientific-art.com/GIF%20files/Medical/tapeworm.gif

• “Tapeworm”. March 27, 2007. http://www.corkscrew-balloon.com/03/11/2lon/img/26a1.jpg

• “Snail”. March 28, 2007. http://www.worth1000.com/web/media/312375/Snails.jpg

• “Slug”. March 28, 2007. http://www.uidaho.edu/so-id/entomology/Home_&_Garden/garden%20slug.jpg

• “Internal clam”. March 28, 2007. http://www.bio200.buffalo.edu/labs/images/clam.JPG

• “Octopus”. March 28, 2007. http://www.glaucus.org.uk/Octopus-RY.jpg