Characteristics
Hydrozoans
Scyphozoans
Anthozoans
Miscellaneous
100
In Latin, the name Cnidaria means that these animals bear what ?
What are nettles (or stingers) ?
100

We observed this microscopic, moving freshwater polyp in class

What is Hydra ?

100
Scyphozoans are almost always in this body form:
What is medusa ?
100
In Latin, the word Anthozoa means this:
What is flower animal ?
100
In cnidarians, the ectoderm is also called this:
What is epidermis ?
200
For defense or capturing prey, each cnidocyte contains this structure
What is a nematocyst ?
200
In Latin, the name Hydrozoa means this:
What are water animals
200
The top of a jellyfish attached to its tentacles is called this:
What is bell or float ?
200
A sea anemone is different from a coral polyp for 2 reasons:
What is it's larger and solitary (lives on its own ) ?
200
In cnidarians, the endoderm is also called this:
What is gastrodermis ?
300
Ocelli are used for helping some cnidarians do this
What is sense light ?
300
This looks like a jellyfish, but is really 1,000 smaller organisms put together
What is the Portuguese Man of War ?
300
Despite being small, this could be one of the most poisonous jellyfish in the world
What are box jellyfish ?
300
In a partnership with sea anemone and clownfish, what does the clownfish do for the sea anemone ?
What is lure in other fish, provide ventilation
300
You can tell a coral reef is in trouble if it turns this color:
What is white ?
400
Statocysts are used for helping some cnidarians do this:
What is sense gravity OR sense of balance (tell up from down)
400
Obelia spends time in both of these life stages:
What are polyps and medusae ?
400
Jellyfish are called such because they have so much of this jellylike material
What is mesoglea ?
400
This is the largest structure in the world created by organisms:
What is the Great Barrier Reef ?
400
This is the larval stage of a cnidarian:
What is a planula ?
500
This is the formal name for the gut of a cnidarian
What is gastrovascular cavity ?
500
Of the 3 germ layers from development, cnidarians are diploblastic because they are missing this one:
What is mesoderm ?
500
To avoid poisonous jellyfish, avoid those with these characterisitics:
What are long tentacles and pointed/helmet shaped bells
500
This type of reef is not near any mainland or island; it circles to create its own lagoon
What is an atoll ?
500
A similar phylum to Cnidaria is the Ctenophora, which are these animals:
What are comb jellies ?
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