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31 questions
Phylum Ctenophora have _______________ made of ___________ for locomotion.
tentacles ; colloblasts
comb rows ; cilia
tentacles ; cilia
comb rows ; colloblasts
When a Cnidarian catches prey, it uses stinging cells called...
Colloblasts
Stingers
Cnidocytes
Blastoscytes
How do Cnidarians get their prey into their mouths?
contractile cells in gastrovascular cavity
nematocysts pull prey into mouth
contractile cells in feeding arms pull prey into mouth
cnidocytes digest prey outside of stomach
Which of the following is a correct description of the polyp body form?
It's mostly sessile and the tentacles point downward.
It's mostly sessile and the tentacles point upward.
It's mostly mobile and the tentacles point downward.
It's mostly mobile and the tentacles point upward.
Which group of Cnidarians have a symbiosis with algae?
anemones
soft corals
jellyfish
comb jellies
stony corals
The _____ enables cnidarians to respond to stimuli in their environment and send electrical impulses to the muscles.
nerve net
brain
peripheral nerves
nerve cord
What is a defining characteristic between a cnidarian and a ctenophore?
Ctenophores are freshwater and cnidarians are marine
cnidarians have stinging cells and ctenophores don't
ctenophores have stinging cells and cnidarians don't
ctenophore is another name for cnidarian
Which group of jellies have a sting that can kill a human?
Hydrozoa
Anthozoa
Cubozoa
Scyphozoa
How many tissue layers do Cnidarians feature?
1 - monoblastic
2 - diploblastic
3 - triploblastic
depends on the species
(a) are the stinging cells in cnidarians, and (b) are the harpoon-like structures that shoot out of the cells.
When a comb jelly catches its prey, it uses sticky cells called...
Colloblasts
Nematocysts
Cnidocytes
Blastoscytes
Parts F & G are the _________ & ________ and make up the _______________.
radial & circular canals ; hydrostatic skeleton
mouth & pharynx ; gastrovascular cavity
radial & circular canals ; nervous system
oral & feeding arms ; tentacles
If you are stung by a jellyfish, what are the TWO treatments you can use to relieve the sting?
Which of these are typically colonial?
stony corals
jellyfish
soft corals
anemones
siphonophores
Which of these is part of class Scyphozoa?
Select all of the members of class Hydrozoa:
Which one is the box jellyfish (class Cubozoa)?
Which of these are members of class Anthozoa?
Which of these is in phylum Ctenophora?
Which one is the stalked jellyfish (class Staurozoa)?
Letters A, C, and E all represent what type of tissue?
skeletal
gastrodermis
muscle
nervous
Structure E is the __________ and it functions in _______________.
rhopalium ; sensing light
rhopalium ; releasing gametes
gonads ; releasing gametes
radial canal ; detecting prey
Cnidarians can contain both male and female gonads, a condition called ____________________; OR they can be separate sexes, a condition called ______________.
monoecious ; dioecious
dioecious ; monoecious
Structure B is the
stomach
gonads
pharynx
basal disk
Which type(s) of anthozoans produce a calcium carbonate structure?
Sea Anemones
Hard / stony corals
Soft Corals
Zoanthids
All of them
Which type of Anthozoan produce structures called sclerites for structure & support?
Sea Anemones
Zoanthids
Stony Corals
Soft Corals
All of them
Class Myxozoa are parasitic cnidarians. What type of animals do they affect?
commercial fishes like trout & salmon
sharks
other cnidarians
crabs & lobsters
marine mammals
Match the following
Class Tentaculata | ||||
Class Staurozoa | ||||
Class Nuda | ||||
Soft coral | ||||
Stony coral |
Select all of the characteristics that apply to Hydras:
Found in freshwater
Hydras don't age - most of their cells are stem cells
Hydras never die
Found in ocean / marine habitats
they can be in polyp or medusa form
Match the following Cnidarian classes to examples:
Siphonophores, hydras, crystal jellies | Class Anthozoa | ||
Box jellies, sea wasps | Class Cubozoa | ||
Stalked jellies | Class Hydrozoa | ||
Corals & anemones | Class Scyphozoa | ||
"True jellies" | Class Staurozoa |
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