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.
No, trout are not jawless fish. They belong to the class Osteichthyes, which includes jawed fish with bony skeletons. Jawless fish belong to the class Agnatha, which includes animals like lampreys and hagfish.
Freezing is exothermic, as the substance that is freezing loses energy to its surroundings.
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.
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.
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.
ecothermic
Ecothermic because jellyfish aren't warm blooded
with gills; they're fish!
Class Agnatha
Endothermic reactions absorb heat from the surroundings, causing a decrease in temperature, while exothermic reactions release heat into the surroundings, causing a temperature increase. Endothermic reactions require energy input to proceed, while exothermic reactions release energy during the reaction.
Fish, amphibians, reptiles, birds and mammals. Fish are ecothermic, aquatic vertebrates. Amphibians and reptiles are ectothermic vertebrates. Birds and mammals are endothermic vertebrates.
jawless fishes
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).
Fishes of class AGNATHA (myxini) have tooth-like structures that are composed of KERATIN..
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.
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.
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.