Cnidarians and Comb Jellies

Biology

Coelenterates

Cells form tissues that perform specific functions

What type of symmetry for Cnidarians exhibit?

Radial

How do Cnidarians capture prey?

Nematocysts

What is a Nematocyst?

stinging structures found within tentacles 

Cnidocytes

cells which contain nematocysts

Organism that causes Irukandji Syndrome

Carukia Barnesi

Extracelluar digestion

outside of the cells

Intracelluar digestion

within cells in the lining of the gut

Statocysts

small calcareous bodies in fluid-filled chambers surrounded by sensitive hairs to help with balance

The body forms in the phylum cnidaria are…

Polyp and Medusa

What is Polyp?

a sac-like attached stage with a mouth and tentacles

What is Medusa?

a mobile bell-like upside down polpy

Planula

Larva - ciliated stage with two cell layers

What is the gelatinous middler layer?

Mesoglea - expands to form gelatinous domed bell

What is the function of colloblasts in comb jellies?

Sticky cells that help capture prey

The phase in the life cycle of cnidaria which possesses both male and female sex gametes

Medusae