0
well they have 1 and its open
What else can I help you with?
Related Questions
How many heart chambers do cnidarians have?
This will depend upon the insect that you are talking about. Some have only two chambers and others can have a lot more.
Do cnidarians have an exoskeleton?
Yes; many cnidarians have an exoskeleton.
How many types of cnidarians are there in the world?
Cnidarians do not have legs. Many have stinging tentacles. The number of these varies by species.
Do cnidarians have sight?
Cnidarians do no possess eyes for sight, though many of them are able to sense light vs dark.
How many body openings do cnidarians have?
1
How many layers do cnidarians produce?
200
What are two types of cnidarians that are formed by colonies?
small cnidarians and big cnidarians
How are cnidarians less complex than annelids or mollusks?
Cnidarians include jellyfish and corals. Cnidarians are less complex than annelids or mollusks because the latter have gills with many layers of tissue.
How many chambers are in a human?
5 chambers
What is the family for cnidarians?
The cnidarians are in the Kindom family
Do cnidarians have nerves?
cnidarians have no nervous system
Is a cnidarians invertebrates?
Yes, cnidarians are invertebrates.
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