1. http://soe.ucdavis.edu/ss0708/pimentela/images/Jellyfish.jpg

2. http://photography.nationalgeographic.com/staticfiles/NGS/Shared/StaticFiles/ Photography/Images/Content/transparent-jellyfish-689547-xl.jpg  Divided into 4 classes: › Hydrozoa  Obelia  Some are Freshwater › Scyphozoa  Jellyfish › Cubozoa  Sea Wasp › Anthozoa  Sea Anemones CHIKA

3.  Polyps: › Cylindrical Form › Adhere to the ground on the aboral end › Not free moving  Medusa: › Flattened, mouth down version of polyp › Free moving Michelle

4. http://images.google.com/imgres?imgurl=http://blog.hotelclub.com/wp- content/uploads/2008/05/jellyfish2.jpg&imgrefurl=http://blog.hotelclub.com/the-incredible-jellyfish- lake/&usg=__BKagMTz8g47- VG4SX8EDFaL9uoI=&h=300&w=400&sz=47&hl=en&start=145&um=1&itbs=1&tbnid=UmZgcZhc KfWCvM:&tbnh=93&tbnw=124&prev=/images%3Fq%3Djellyfish%26start%3D144%26um%3D1 %26hl%3Den%26sa%3DN%26rlz%3D1R2SNNT_enUS364%26ndsp%3D18%26tbs%3Disch:1  No coelom present › No open area surrounded by body tissue  Gastrovascular cavity › Digestive compartment Makana

5. http://estb.msn.com/i/28/CE6ED47A2567BD0E2F316AE1291B4.jpg  Radial Symmetry › Radiate from center › Any plane will cut into mirror images Chika

6. http://www.biology-blog.com/images/blogs/11-2007/new-species-of-sea- anemone.jpg  Non-centralized nerve net that coordinates movement  No brain Michelle

7. http://lesleehorner.files.wordpress.com/2009/12/jellyfish2.jpg  None :[ Makana

8. http://images.google.com/imgres?imgurl=http://blog.hotelclub.com/wp- content/uploads/2008/05/jellyfish2.jpg&imgrefurl=http://blog.hotelclub.com/the-incredible-jellyfish- lake/&usg=__BKagMTz8g47- VG4SX8EDFaL9uoI=&h=300&w=400&sz=47&hl=en&start=145&um=1&itbs=1&tbnid=UmZgcZhc KfWCvM:&tbnh=93&tbnw=124&prev=/images%3Fq%3Djellyfish%26start%3D144%26um%3D1 %26hl%3Den%26sa%3DN%26rlz%3D1R2SNNT_enUS364%26ndsp%3D18%26tbs%3Disch:1  Pushes food into cavity using tentacles › Use of cnidocytes and nematocyst  Food comes through mouth/anus  No real, developed digestive system Chika

9. http://static.howstuffworks.com/gif/jellyfish-9.jpg

10.  No real, developed excretory system  Undigested remains are pushed out through mouth/anus http://www.psychobeing.co.uk/doblog/wp- content/uploads/2009/11/MakingJellyfishBabies1.jpg Michelle

11.  Polyps are stationary  Medusae move by passive drifting and contractions of its bell-shaped body  Cubozoans actively pursue their prey http://img.brothersoft.com/screenshots/softimage/c/coral_clock_3d_screensaver-45155-1228962634.jpeg Makana

12.  No bones  The Gastrovascular Cavity acts as a hydrostatic skeleton › When the volume of the cavity is filled, it can change shape http://www.aquadirectory.us/wp-content/uploads/Glow%20Coral%20Fish.jpg Chika

13.  Simple contractile tissues that can detect and respond to stimuli equally from all directions  Some Cubozoans have complex eyes embedded in their medusa http://www.nature.com/nature/journal/v440/n7082/images/440280a-i1.0.jpg Makana

14.  Asexual › Favorable environmental conditions › Budding and Pinching off  Sexual › Deteriorating environmental conditions › Resistant zygotes that remain dormant http://www.biology.uco.edu/PersonalPages/CButler/BIO1404/slides/Slide_37_Obelia_(wm).jpg Michelle

15. http://www.palaeos.com/Invertebrates/Cnidaria/Images/obelia_cycle.gif

16.  Dominant stage: medusa  Coastal jellyfish › Alternate generations › Sexual and Asexual Reproduction  Open Ocean jellyfish › No polyp stage › Sexual and Asexual Reproduction http://graphics.stanford.edu/courses/cs348b-competition/cs348b-03/jellyfish/Jellyfish.jpg Michelle

17.  Dominant Stage: Medusa (box-shaped)  Alternate generations  Asexual Reproduction  Sexual Reproduction http://images.google.com/imgres?imgurl=http://i248.photobucket.com/albums/gg165/vampix3/jellyfish.jpg&imgrefurl=http://www.myspace.com/33 046871&usg=__NjTiLWiwVVdMz0zEFclRlye3884=&h=375&w=500&sz=60&hl=en&start=70&um=1&itbs=1&tbnid=L3wlsiNuLq0GDM:&tbnh=98&t bnw=130&prev=/images%3Fq%3Djellyfish%26start%3D60%26um%3D1%26hl%3Den%26sa%3DN%26rls%3Dcom.microsoft:en- US%26ndsp%3D20%26tbs%3Disch:1 Michelle

18.  Dominant stage: polyp  No medusa stage  Asexual Reproduction  Sexual Reproduction http://images.google.com/imgres?imgurl=http://i248.photobucket.com/albums/gg165/vampix3/jellyfish.jpg&imgrefurl=http://www.myspace.com/33046 871&usg=__NjTiLWiwVVdMz0zEFclRlye3884=&h=375&w=500&sz=60&hl=en&start=70&um=1&itbs=1&tbnid=L3wlsiNuLq0GDM:&tbnh=98&tbnw=13 0&prev=/images%3Fq%3Djellyfish%26start%3D60%26um%3D1%26hl%3Den%26sa%3DN%26rls%3Dcom.microsoft:en- US%26ndsp%3D20%26tbs%3Disch:1 Michelle

19.  Lack specialized organs for gas exchange  Take in gases directly from surrounding water http://farm1.static.flickr.com/23/33904224_771803aeb7.jpg Makana

20.  Sea Wasps › One contains enough poison to kill 60 people http://www.zmescience.com/wp-content/uploads/2009/08/sea-wasp.jpg Chika

21.  Also known as Comb Jellies  8 “combs” of cilia that propel it through the water  To catch prey: › If prey touches one of the two tentacles, specialized cells burst open › Covers the prey with a sticky mass http://people.bu.edu/jrf3/BI547/IMAGE_CTENOPHORA_Mnemiopsis.jpg Makana

22.  Which of the following is present in Cnidarians? › A circulatory system › A nervous system › A developed digestive system › None of the above  Answer: None of the above http://thundafunda.com/33/underwater-animals-fish/Drifters,%20Jellyfish%20pictures%20underwater%20photos.jpg Chika

23.  Which of the following animals is a Cnidarian? › Octopus › Sea Star › Sea Anemone › Clam  Answer: Sea Anemone http://www.biocrawler.com/w/images/f/fe/Obelia-Hydrozoa-at40x.jpg Makana

24.  What type of body symmetry do Cnidarians have? › Radial Symmetry › Bilateral Symmetry › Spherical Symmetry › Asymmetric  Answer: Radial Symmetry http://www.valdosta.edu/~jlgoble/tclown1.jpg Chika

25.  Which of the following are not one of the major classes of the phylum Cnidaria? › Scyphozoa › Cubozoa › Cephalopods › Anthozoa › Hydrozoa  Answer: Cephalopods http://funscubadiver.com/gallery/bonaire-scuba-photo/bonaire-flower-coral.jpg Makana