Jaws evolved __________. by modification of the skeletal rods that previously supported the anterior pharyngeal slits from the bony armor in ancient jawless fish from the rasping tongue by modification of middle ear bones from arthropod jaws
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According to a current hypothesis, jaws evolved from what structures? skeletal rods supporting the pharyngeal (or gill) slits in the anterior end of an early gnathostome fish the middle ear bones of early mammals the slime glands of early hagfishes lungs Question 30 (2 points) Which two groups of animals possess an amniotic egg? ray-finned fish and amphibians amphibians and reptiles sharks and rays reptiles and mammals
Sri K.
Vertebrate jaws evolved from ____________ . a. gill supports b. ribs $c$ scales d. teeth
A number of major evolutionary innovations arose in the fish lineage. Check all of the evolutionary innovations associated with the fishes. Teeth arose from the rough scales of ancestral sharks. Skeletal developments leading to the amphibian movement onto land probably evolved from lobe-finned fishes. Fish fins are ancestral (homologous) structures to the flippers (forelimbs) of turtles. The anterior gill arch formed the basis for the evolution of the vertebrate jaw. The swim bladder ultimately led to the evolution of the amphibian urinary bladder.
Madhur L.
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