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by the gill slits
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∙ 13y ago
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∙ 12y agogill slits
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Are Agnatha internal fertilized?
Externally
Does agnatha have ectoderm or endoderm?
Agnatha are ancient jawless fish that include lampreys and hagfish. They are also probably the earliest vertebrates and have ectoderm.
What are examples of agnatha?
Agnatha is a superclass of the phylum Chordata. It contains the jawless fish. Two common examples of this would be the lamprey and the hagfish.
What types of body covering do Agnatha have?
skin
What does the word agnatha mean?
without jaws
What are three main groups of fishes?
Class Agnatha
What is the number of chambers in the agnatha heart?
2 chambers
How do class agnatha breathe?
with gills; they're fish!
What are the 3 characteristic of agnatha?
I don't know but i will do some research...
What is agnatha?
jawless fish. not very common today, but they were in the past.
Do agnatha have Bone?
no they have large bonelikes structures called the stonnes.
Why are fish from the class Agnatha considered primitive?
Agnatha means 'no jaws', and they really don't have jaws, although they do have teeth. They also have no stomach, and no boney skeleton. Their skeleton is cartilagineous, like the elasmobranchs.
