BIOLOGICAL CLASSIFICATION
KINGDOM ANIMALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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TRUE
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FALSE
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Either A or B
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None of the above
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Detailed explanation-1: -Just as cold-blooded animals have an equal body temperature to their surrounding environment, the Hagfish has the same concentration of salt in its blood as the surrounding seawater. This trait previously led scientists to believe that these fish (known as osmoconformers) could only poorly regulate their pH.
Detailed explanation-2: -There are jawless fishes, cartilaginous (cart uhl AJ uh nuhs) fishes, and bony fishes. All three types are “cold-blooded, ” or ectotherms. This means that they can’t control their body temperature internally. Their body temperature is similar to the temperature of their outside environment.
Detailed explanation-3: -Yes. Lamprey and hagfish are both jawless fishes. They are the only living members of the taxonomical class Agnatha (Greek for “no jaws”).
Detailed explanation-4: -They are cold-blooded and have fins to help propel themselves through the water. Many fish lay eggs and are covered with scales. This group includes jawless fish (lampreys), cartilaginous fish (sharks/rays) and bony fish.