Dictionary » M » Metamorphosis



noun, plural: metamorphoses

(1) (biology) A change in the form and often habits of an animal after the embryonic stage during normal development.

(2) (pathology) A usually degenerative change in the structure of a particular body tissue.


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 form or structure through cell growth and differentiation. Some insects, amphibians, molluscs, crustaceans, cnidarians, echinoderms and tunicates undergo metamorphosis, which is usually (but not always) accompanied by a change of habitat or behaviour.

Metamorphosis may be incomplete metamorphosis or complete metamorphosis.

Word origin: Latin metamorphōsis, from Greek, metamorphoun, to transform : meta-, meta- + morphē, form.

Related forms: metamorphose (verb).

Compare: ametabolism.

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Book recommendation for exam

... in arthropods (prawn, cockroach and scorpion); modification of mouth parts in insects (cockroach, mosquito, housefly, honey bee and butterfly); metamorphosis in insects and its hormonal regulation; social organization in insects (termites and honey bees). 10. Mollusca : Feeding, respiration, ...

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by bertstare
Sun Oct 21, 2012 2:19 pm
Forum: Zoology Discussion
Topic: Book recommendation for exam
Replies: 3
Views: 8489

What is this animal/insect?

... still moving? Did it move away after you took that picture? If not, it might look like the cast, old exoskeleton of some insect with indirect metamorphosis, perhaps a large cicada?

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by SteveYst
Wed Oct 03, 2012 1:49 pm
Forum: Zoology Discussion
Topic: What is this animal/insect?
Replies: 6
Views: 4861

Complete metamorphosis of lepidoptera?

Hey, i am currently working on a very specific project about the metamorphosis of lepidoptera in the pupa stage. I want to make a short animated movie clip which explains the pupa stage of the metamorphisis - especially the changes of the internal organs. ...

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by jolinar
Fri Aug 17, 2012 6:40 pm
Forum: Zoology Discussion
Topic: Complete metamorphosis of lepidoptera?
Replies: 1
Views: 2261

Re: Theories - Origin of Life

... be re-enforcing the point. Also the organisation of the cell involves much more than the chromosomes themselves. The DNA code itself undergoes a metamorphosis. For example certain bases are subject to methylation. This is not a simple tagging or marking of these bases, but a complete transformation ...

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by scottie
Wed Feb 22, 2012 8:12 pm
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 563
Views: 1127990

Theories - Origin of Life

... And today, there is also a form of free-floating planula!)! Hence, the ancestors of amphibians also have the same nymphs in their voluntary metamorphosis! But this is Stegocephalia! So, coelacanth, then ihtiostega, akantostega - this is not adult organisms, but the intermediate stages of ...

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by LeoPol
Mon Jul 18, 2011 1:19 pm
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 563
Views: 1127990
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