Characteristics
What is on the tip of the nematocysts?
Poison
What marine animals does Anthozoa include?
Corals, Sea Pens, Anemones, and Sea Fans
How many known species are there of cubozoa?
What is another name for them?
Hydroid
What kind of shape does their bell have?
round shaped bell
What kind of symmetry does Cnidaria have?
Radial
Why are Reef-building corals only in shallow water?
They need light in order to survive
What do they eat?
Fish, worms, or arthropods
What do they known to attach to?
rocks or other hard surfaces
What kind of regions are they found in?
Both tropical and polar regions
What type of digestion system do Cnidaria have?
Extracellular digestion
Symbiotic
What kind of animal are they because they are clear?
Gelatinous animal
How many known species are there?
3700 known species
What do they tend to feed on?
Crustaceans, plankton, fish eggs, larvae, and invertebrates
What stages in the life cycle are mobile?
Medusa and sessile polyp
What kind of reproduction do they undergo?
Asexual Reproduction
What is a nematocysts?
Specialized cell in the tentacle containing venom
What kind of colonies do Hydrozoas form?
Interconnected and Interdependent colonies
If they DONT form swarns how do they live?
Live as solitary Organisms
What are the two body layers and what are they seperated by?
Ectoderm and Endoderm; Mesoglea
What kind of algae do athozoa have in their body? and what does it do?
Photosynthetic algae and it harnesses the sunlight for nutrition
What is the diffrence between Cubozoa and Scyphozoa?
Cubozoa has a square shaped bell where the tentacles come out. A Scyphozoa has a round shaped bell and the tentacles go all around
What kind of feed do the polyps have and what does it depend on?
Passive feeding and depends on currents to bring prey close
If a human gets stung what probems can arise?
skin rashes, muscles cramps or death