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5
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True or false: The osculum is part of cnidaria.
False. It is part of the sponge which is Porifera.
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5
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Why do cnidaria have stinging cells?
To paralyze prey
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baam
Lose 20 points!
Oops!
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star
Double points!
Okay!
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fairy
Take points!
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25
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lifesaver
Give 10 points!
Oops!
5
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Cnidaria have a __________ __________ like a stomach, connected to their mouth.
gastrovascular cavity
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5
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What are the three groups of cnidaria?
jellyfish, seas anemone, and corals
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What is the habitat of most cnidarians?
the ocean
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Water enters a sponge through its ______________ and deposits nutrients.
central cavity
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How do sponges feed?
They are filter feeders. They feed on oxygen and small particles of nutrients suspended in water.
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5
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What group of invertebrates is this?
cnidaria- it is coral
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5
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What are cnidoblasts?
stinging cells that give this group its name.
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These are the simplest invertebrate animals. They have no organs (2 types).
Porifera and Cnidaria
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lifesaver
Give 25 points!
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gold
Win 50 points!
Okay!
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shark
Other team loses 25 points!
Okay!
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thief
Give points!
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25
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seesaw
Swap points!
Oops!
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gift
Win 25 points!
Okay!
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rocket
Go to first place!
Okay!
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banana
Go to last place!
Oops!
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eraser
Reset score!
Oops!
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magnet
Take 25 points!
Okay!
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fairy
Take points!
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25
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banana
Go to last place!
Oops!
5
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Cnidaria have one opening surrounded by _________ with stinging cells.
tentacles
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5
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Which Cnidaria stage does the jellyfish represent?
medusa stage
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