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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.
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∙ 12y ago
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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.
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.
Is freeezing endothermic or exothermic?
Freezing is exothermic, as the substance that is freezing loses energy to its surroundings.
Is a maned wolf endothermic or ectothermic?
Yes. A wolf is endothermic, able to maintain its own body temperature. It is a mammal, and mammals and birds are endothermic. The term 'endothermic' is the biological term for an animal that is warm-blooded.
Are penguin exothermic or endothermic?
A duck is endothermic, able to maintain its own body temperature. It is a bird, and mammals and birds are endothermic. The term 'endothermic' is the biological term for an animal that is warm-blooded.
Is the African red worm endothermic or ecothermic?
ecothermic
Is a jellyfish ectothermic or endothermic?
Ecothermic because jellyfish aren't warm blooded
What are three main groups of fishes?
Class Agnatha
How do class agnatha breathe?
with gills; they're fish!
What are the five verebrates groups each called?
Fish, amphibians, reptiles, birds and mammals. Fish are ecothermic, aquatic vertebrates. Amphibians and reptiles are ectothermic vertebrates. Birds and mammals are endothermic vertebrates.
Are Lampreys and hagfishes are examples of what kind of fishes members of the class Agnatha?
jawless fishes
What order is jawless fish in?
Jawless fish are the oldest group of fish, belonging to the class Agnatha. Within this class, they are further divided into two orders: the Petromyzontiformes (lampreys) and the Myxiniformes (hagfish).
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..
Are all animals endothermic?
Not all animals are endothermic (actually). The reptilian family is not endothermic and can survive without the warm-blood. Mostly, mammals are endothermic and not usually the reptile class.
What three types of vertebrates are ecothermic?
Snakes
How many classes come under the subphylum Vertebrata?
Class Agnatha (jawless fish)Class Chondrichthyes (cartilaginous fishes)Class Osteichthyes (bony fishes)Class Amphibia (amphibians)Class Reptilia (reptiles)Class Aves (birds)Class Mammalia (mammals)
