Metamorphosis (biology) | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-03-29

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Metamorphosis


00:01:28 1 Etymology
00:01:51 2 Hormonal control
00:03:16 3 Insects
00:04:14 3.1 Development and terminology
00:05:24 3.2 Evolution
00:07:05 3.3 Recent research
00:08:00 4 Amphibians
00:09:37 4.1 Frogs and toads
00:11:08 4.2 Salamanders
00:11:48 4.3 Newts
00:12:48 4.4 Caecilians
00:13:26 5 Fish
00:15:22 6 See also



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SUMMARY
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Metamorphosis is a biological process by which an animal physically develops after birth or hatching, involving a conspicuous and relatively abrupt change in the animal's body structure through cell growth and differentiation. Metamorphosis is iodothyronine-induced and an ancestral feature of all chordates. Some insects, fishes, amphibians, mollusks, crustaceans, cnidarians, echinoderms, and tunicates undergo metamorphosis, which is often accompanied by a change of nutrition source or behavior. Animals that go through metamorphosis are called metamorphoses. Animals can be divided into species that undergo complete metamorphosis ("holometaboly"), incomplete metamorphosis ("hemimetaboly"), or no metamorphosis ("ametaboly").
Scientific usage of the term is technically precise, and it is not applied to general aspects of cell growth, including rapid growth spurts. References to "metamorphosis" in mammals are imprecise and only colloquial, but historically idealist ideas of transformation and monadology, as in Goethe's Metamorphosis of Plants, have influenced the development of ideas of evolution.