Characteristics
What 2 body forms do cnidarians have?
Medusa and Polyp
Are hydra large or small?
Small
Name the 2 types of corals.
Hard and soft
What does a sea anemone do with the food leftover from its meal?
It spits the leftovers out!
Can a jellyfish have a polyp stage?
Yes, when it is first born.
What do all cnidarians use to capture prey?
Stinging cells
What 2 environments can hydra live in?
Oceans and in fresh water
What do we mean when we say corals are colonial animals?
Individual corals live and grow while connected to each other.
What fish has a symbotic relationship with sea anemones?
Clown fish
How do jellyfish reproduce?
Asexually and sexually
What is just outside of a cnidarian's mouth?
Tentacles
How do hydra reproduce?
Asexually & sexually
We know sea turtles eat corals, what bucktoothed fish eats them?
Parrot Fish
What animal in our former unit eats sea anemone tentacles to obtain the stinging cells?
Nudibranchs!
Why do you think God allowed jellyfish to reproduce in 2 ways?
In order for the species to survive
Do ALL cnidarians live in water (aquatic) environments?
Yes
Has Mrs. Smith ever seen a live hydra?
No
What lives in coral and gives it its color?
Photosynthetis algae.
What do clown fish do for sea anemones?
Bring food, clean the area around the sea anemones, & defend sea anemones from predators
Do jellyfish have brains?
No
What kind of symmetry do cnidarians have? How many digestion compartments do cnidarians have?
1. Radial
2. One
What intriging fact about hydras did you learn?
Hydras live forever.
Name the three types of reefs and their locations.
Fringing on the coast/Barrier take a boat to/ Atoll take a boat to
Are sea anemones threatened to become extinct?
Yes, due to over-fishing of clown fish.
How long do jellyfish live?
Four years.