Final answer:
Pyrosomids are not typically discussed in the context of standard amphibian larvae metamorphosis, but amphibian tadpoles like those of frogs develop lungs, legs, lose their tails, and change feeding habits as they prepare to move onto land.
Step-by-step explanation:
The type of tadpole larva that pyrosomids have is not commonly discussed in standard biology texts, as it diverges from the typical metamorphosis of amphibian tadpoles like those of frogs. However, the standard tadpole or amphibian larvae undergo a series of developmental changes to prepare for life on land. These changes include developing lungs for air-breathing, growing legs for movement on land, the loss of the tail, and a shift from a herbivorous filter-feeding diet to a carnivorous one. The tadpole stage is characterized by gills for breathing underwater, a lateral line system for sensing their environment, and a long-finned tail for swimming which are all lost or transformed during the metamorphosis process.