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Hagfish live off dead carcasses of animals sinking to the ocean floor, sliding in and out of the bodies and feeding on both inside and outside. They produce ridiculous amounts of slime to aid them with this.
Lampreys latch onto fish with their circular, toothy mouths and scrape away scales and flesh with a tongue that´s also covered in teeth. They are considered parasites.
What else can I help you with?
What does the word agnatha mean?
without jaws
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.
Do fish have keratin?
Fishes of class AGNATHA (myxini) have tooth-like structures that are composed of KERATIN..
Which class of fishes does a lamprey belong?
Lampreys are in the superclass Agnatha, jawless fish. They are of the class Cyclostomata, which includes hagfish, as opposed to the extinct Ostracoderms.
What are two animals that have the same type of symmetry as the letter M?
There are many animals that have the same type of symmetry as the letter M. A frog for example has this.
How do agnatha animals breathe?
through holes in there body. who knows what ones... probably all of them....
What are identifying characteristics of Agnatha?
Agnatha, also known as jawless fish, lack jaws and scales. They have a cartilaginous skeleton, a round mouth, and a single nostril on their head. Agnatha are also known for their ability to produce slime as a defense mechanism.
Does agnatha have ectoderm or endoderm?
Agnatha, which includes jawless fish like lampreys and hagfish, have all three germ layers: ectoderm, mesoderm, and endoderm. They exhibit the typical triploblastic organization found in most animals.
Are Agnatha warm or cold blooded?
Agnatha, which includes jawless fish such as lampreys and hagfish, are generally considered to be cold-blooded (ectothermic). This means their body temperature is largely determined by the surrounding environment. They do not have the physiological mechanisms to regulate their body temperature internally like warm-blooded (endothermic) animals do.
Are Agnatha internal fertilized?
Externally
What does the word agnatha mean?
without jaws
What types of body covering do Agnatha have?
skin
Which pair of characteristics would you use to place a fish in one of the three fish classes agnatha cartilaginous fishes or bony fishes?
skin type
How do agnatha breath?
by the gill slits
How do class agnatha breathe?
with gills; they're fish!
What are three main groups of fishes?
Class Agnatha
Is class agnatha endothermic or ecothermic?
Its Chondrichthyans and it depends on the species. Mostly they are ectothermic but a small number of exceptions exist. Some sharks, like the thresher shark, can warm parts of its body some what, this means a few C above water temperature not like how warm blooded animals regulate temperature. So in short.Ectothermic.
