Transcript Phylum Cnidaria

Nomura Jellyfish
Coral
Hydra
Anemones
Jellyfish
The Facts …
•Body symmetry- Radial
•Reproduction-
Asexually and Sexually
•Movement- Polyps- Stationary
Medusas- movement varies
•Food- carnivores- sting their prey
HYDRA
Chlorohydra viridissima
 Hydra live in FRESHWATER. They are the only
Cnidarians not to live in salt water.
DAPHNIA –
are small
crustaceans
(like shrimp)
Medusa
FREE
SWIMMING
Polyp
STATIONARY
CNIDOCYTES – OUCH!
That stings!
Just how fast is a cnidocyte?
…. Can you beat it?
.0000007 seconds
Nemo on his way
to school
1. Use the CNIDOCYTES
in the tentacles to stun
and capture prey.
2. Tentacles pull prey to
mouth and into body
cavity.
3. Prey is digested in body
cavity using enzymes
4. Whatever is not digested
is spit out of the mouth.