Honors Marine Biology Module 4 October 18, 2012 Corals and Tube Worms

Class Challenge Crazy Hair Day

Our next Wet lab Field Trip Saturday October 27, 2012 from 10:00am to 12:00 noon. Quick Point Park: South end on Longboat Key. Park on the left side of the road at the park. We will be using plankton nets and microscopes.

REMEMBER….. If you will be absent, I will need a written excuse from your parent. You will need to make up the lab. See me for your make- up lab.

Last weeks Quiz

Quiz 1.Name the 3 species of Mangroves. 2.What is a spicule on a sponge? 3.Define a Collar cell.

Algae Song phaeophyta rhodophyta red and brown algae phyla multicellular diff tissue common use today is in thickening glue microscopic macroscopic filamentous too red algae sans flagella oooh phycobiliproteins give red its hue fucoxanthin brown not blue feather boa kelp and agarweed are here to represent this algal family

Florida Key Coral Reef Health

Anthoza Cnidarians soft corals Cnidarian Aneomone eating a fish box jellies

Class Anthozoa Represents the largest group of cnidarians. Corals and Sea Anemones – These organisms have a more complex structure than the hydrozoans or scyphozoans. Their gastrovascular cavity is lined with vertical partitions called Septa that provide greater surface area for digestion.

Corals Most corals are made up of colonies of individuals with layers of ectodermal cells that secrete protective walls of calcium carbonate into which the polyps can hide when threatened.

What makes many corals different from other anthozoans? They have cup-like walls around each polyp. These polyps remained attached to each one another after budding. This forms the coral reef. Reef building corals grow faster than other corals because they have the help of symbiotic dinoflagellates called zooxanthellae.

Zooxanthellae Produce carbon-containing compounds (like sugar) by photosynthesis, and they give some of those compounds to the corals. The corals then use the those compounds for energy, and they also use the carbon in those compounds to form the calcium carbonate they need to make the protective walls. Even through the corals get some food from the zooxanthelle, they also eat plankton that float in the water.

Other Notable Anthozoans Colonial anthozoans that form branching or elongated skeletons: Sea Fans Sea Plumes Black Corals Colonies that do not have hard skeletons: Soft Corals Sea Pens No skeletons: Sea Anemoes

Bilateral Worms Bilaterally symmetrical: Animals with this type of symmetry have a defined head end (anterior) and rear end (posterior), a right and a left side, and a top and bottom surface. Dorsal: Referring to the top (or back) surface of an animal. Ventral: Referring to the bottom (or belly) surface of an animal.

Bilateral Marine Worms Flatworms: Their dorsal and ventral sides are flat like a pancake. These flatworms have the simplest organization of organs and organ systems among all bilaterally symmetric animals. There are three types: 1.Turbellarians 2.Trematoda 3.Tapeworms

Symbiotic Relationships Mutualism: A relationship between two or more organisms of different species where both benefit from the association. Commensalism: A relationship between two or more organisms of different species where one benefits and the other is neither harmed nor benefited. Parasitism: A relationship between two or more organisms of different species where one benefits and the other is harmed.

Homework Take Module 4 Test Read Module 5 pages: 97 – 107 OYO Questions 5.1 – 5.5 Study Guide Questions: Define a-e and questions 2-9 Finish up labs Class challenge