Intro to Unit Three

Ingestion: the taking in of food Digestion: the breaking down of complex

molecules into simpler ones that can be used by the organism

Absorption: the transportation of digested nutrients to the cells of the body.

Egestion: the removal of wastes (undigested materials) from the body

Different organisms digest food in different ways.

Your next task is to find out how they do it. You will be assigned an organism and you need to make a poster to explain how they digest their food.

As much as possible, try to break it up into the four parts of digestion that you just copied down.

Make sure you understand what you put on your poster. Don’t put down things that you couldn’t explain to me.

Also make sure they are readable as we’ll be putting them up on the walls once I’ve marked them.

Include pictures/diagrams to help your explanation.

Stay on task and monitor your time.

Sponge (ocean animal)

Hydra (fresh water animal)

Earthworm Bird Cow Frog Boa Constrictor

Venus Flytrap (carnivorous plant)

Starfish (carnivorous marine animal)

Dogfish shark Tapeworm (parasitic animal)

Oysters (aquatic animal)

Rabbit Spider

Links Animal Kingdom - Internal and External Anatomy Starfish Digestion

http://www.madreporite.com/science/digest.htm http://marine-francine.blogspot.com/2007/11/starfish.html

Cow Digestion http://wiki.answers.com/Q/How_does_a_cow's_digestive_system_work http://www2.kenyon.edu/projects/farmschool/food/milkbio.htm

Carnivorous Plants Venus FlyTrap

Bird Digestion http://www.fernbank.edu/Birding/digestion.htm http://www.thewonderofbirds.com/biology/digestive-system/

Links

Frog http://www.biologycorner.com/worksheets/frog-dissection.html http://www.tutorvista.com/biology/frog-digestive-system-diagram http://www.e-tutor.com/et3/lessons/view/52133/print

Boa Constrictor (snake) http://animal.discovery.com/guides/reptiles/snakes/anatomy_03.html

Hydra http://www.cedarville.edu/personal/jwf/bio100/lecturequiz21b.swf http://wiki.answers.com/Q/What_is_the_hydra_digestive_system_like http://www.micrographia.com/specbiol/cnidari/hydrozo/hydr0100.htm

Earthworm http://www.buzzle.com/articles/earthworm-digestive-system.html Also – see links on Earthworm Exploration Activity!!!

Links…

Rabbit http://www.hopperhome.com/rabbit_digestion.htm http://www.petcaregt.com/rabbits/rabbitdigestivesystem.html

DogFish Shark http://www.enchantedlearning.com/subjects/sharks/anatomy/Digestion.shtml http://www.pc.maricopa.edu/Biology/ppepe/BIO145/lab04_1.html http://campus.murraystate.edu/academic/faculty/tderting/anatomyatlas/RogersDay/

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