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What do all cnidarians have?
An opening
What are the functions of cnidarians opening?
alot of people don't know!
What characteristic is shared by cnidarians and flatworms?
a digestive system with a single opening
What are made up of two cell layers and have only one body opening?
Cnidarians.
Do cnidarians have an exoskeleton?
Yes; many cnidarians have an exoskeleton.
What does cnidarians look like that makes it different from other invertebrate groups?
Most cnidarians have tentacles with stinging cells surrounding their mouth. The mouth is the only body opening. All cnidarianshave radial symmetry.
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.
The sac like gut or gastrovascular cavity of cnidarians has?
A) Only one opening: they expel undigested material through the mouth.
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
How do cnidarians eat?
Mainly through suspension feeding. Cnidarians use stinging tentacles (nomocytes) to capture their prey. Once the tentacles grab the food it is absorbed in the gastrovascular cavity (stomach) and taken in asnutrients.
