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.

Symmetry 1.Radial- around a circle 2.Bilateral- cut into two halves. Radial Symmetry Bilateral 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 Notes Sponges-simple invertebrates that have pores. 1.Do NOT move about freely. 2.Live attached to rocks 3.Water enters through pores and leaves through an opening 4.Filter Feeders 5.2 cell layers thick. No tissue or organs. 6.Have 3 cell types a)Trap food b)Cover and protect c)Make skeleton 7.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 Anemone Jelly Fish Coral Stinging cell Animals

Chapter 7.3 Notes 3 phyla of worms 1.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 paper 3.Put a title on your paper (Earthworm) 4.Name, date, hour 5.Label all parts 6.Straight lines when labeling parts. 7.Color 8.Use a full sheet…draw big

Worked Cited “simple Animals”. March 23, ties_ocean_img/sea_sponge.jpg ties_ocean_img/sea_sponge.jpg “Coral”. March 23, _01_img0119.jpg _01_img0119.jpg “Radial Symmetry”. March 23, etry/SNFLAKE.gif etry/SNFLAKE.gif “Bilateral Symmetry”. March 23, plans/profbooks/images/hearts.gif plans/profbooks/images/hearts.gif

“Vertebrates”. March 23, affiliates.com/images/vertebrates_divider.jpghttp:// affiliates.com/images/vertebrates_divider.jpg “5 kingdoms”. March 23, jpg 26.jpg “Sea Anemone” March 26, “Jelly Fish”. March 26, “Sun Coral”. March 26, jpg jpg “Tapeworm Lifecycle”. March 27, art.com/GIF%20files/Medical/tapeworm.gif art.com/GIF%20files/Medical/tapeworm.gif “Tapeworm”. March 27, balloon.com/03/11/2lon/img/26a1.jpghttp:// balloon.com/03/11/2lon/img/26a1.jpg

“Snail”. March 28, nails.jpg nails.jpg “Slug”. March 28, id/entomology/Home_&_Garden/garden%20slug.jpg id/entomology/Home_&_Garden/garden%20slug.jpg “Internal clam”. March 28, JPG JPG “Octopus”. March 28,