Jawless fish are appropriately named because they lack the hinged jaws found in all other classes in the phylum Chordata. Jawless fish belong to the class Agnatha, one of three classes to contain fish.Answer and Explanation: Jawless fish reproduce using external fertilization techniques of sexual...
How do Planaria breathe? How are barnacles different from members of the phylum Mollusca? How do jawless fish move? How do marine organisms make their shells? How did dolphins get dorsal fins? How do euglena reproduce? What kind of animal is a starfish?
Spiracles likely evolved from gill openings. In primitive jawless fish, spiracles were simply the first gill openings behind the mouth. This gill opening eventually separated as the jaw evolved out of the structures between it and the other gill openings. The spiracle remained as a small, hole-...
Do cartilaginous fish have gills? How are fish, amphibians, reptiles and birds different? How are amphibians different from fish and reptiles? Are lobe fish cartilaginous fish? Are bony fish benthos? Do bony fish have scales? Do bony fish have lungs? Compare how modern jawless fishes and cart...
How do amphibians survive drought? What do mammals, reptiles, birds, amphibians and fish eat? How do amphibians survive in their environment? How do jawless fish eat? Do amphibians breathe continuously? How many species of marine amphibians are there? How often do members of the phylum Cnidaria...
Does an octopus need water to breathe? How does an amoeba move? How do jawless fish move? How do amphibians move in water? How do cnidarians respire? How do cartilaginous fish move? How do Planaria move? What kind of mollusk includes squid and octopuses? Are squids a part of the phyl...
How do amphibians breath underwater? How do coral reefs reproduce? How does a bony fish use the swim bladder? How do whales adapt to the marine biome? How is nitrogen circulated amongst marine organisms? How does single-celled amoeba breathe? How does a squid swim? How do jawless fish mo...
How do jawless fish reproduce? How do amoebas reproduce sexually? What are the ecological roles of marine bacteria? What type of bacteria are marine bacteria? How do amoebas and other one-celled organisms reproduce? How do amoeba and paramecium reproduce? What do marine bacteria eat? How did...
How do jawless fish move? How do amoebas reproduce during adverse conditions? How do amoeba paramecium and euglena reproduce? How do Planaria move? How does gas exchange take place in amoebas? How do amoeba and paramecium reproduce? Can amoebas live in cold water? How do amoebas react to...
How do jawless fish reproduce? How is paramecium different from amoeba and euglena? How do paramecium and amoeba feed? Is an amoeba an animal-like protist? How do amoebas attract other organisms? How are amoeba and euglena similar? How are amoeba and paramecium different? Why are amoeba and...