Classification of Animals
Question
Which of the following undergoes metamorphosis?
Moderate
Solution
Development in Petromyzon is indirect and includes a larval stage called ammocoete. Petromyzon is marine but migrates for spawning to fresh water. After spawning, within a few days, they die. Their larvae, after metamorphosis, return to the ocean.
Pristis (Chondricthyes-Pisces), Pteropus (Mammalia), Psittacula (Aves) do not undergo metamorphosis. They exhibit direct development.
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