Difference between morphollaxis and epimorphosis

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In summary, the author discusses differences between small and similar animals. Small animals do not have differentiation in their tissues, while similar animals can rebuild their whole body. The author also mentions that this is a survival strategy and that it can be viewed as a return to homeostasis.
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gracy
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In difference between column the second point says one talks about similarity and the other of size.I think there should be term"smaller "or "similar" (point is both should mention the same thing)
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gracy said:
both should mention the same thing

Says who ? The author does his/her best to arrange the issues, but apparently for you is more successful in the first and the last.
 
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Morphollaxis: Very "primitive" single-celled and colonial animals do not have a lot of tissue differentiation - or none at all - no tissues. Beasties in this category can rebuild the whole 'body' because the position effect required for stem cells does not need to be extant.

Epimorphosis: found in more complex beasties like salamanders. They cannot rebuild the whole body with all of the tissues because that would require "reverting to a fertilized egg" (not real, never happens, just a phrase to help get the concept), so they are stuck perform much more limited repairs.

Both of these responses are a survival strategy. Lose a tail to a predator? okay, no big deal I can grow a new one. Better than the predator eating all of me. Same concept applies in both cases. It can be viewed as a return to homeostasis. That is the "place" where living things do best.

BTW: this stuff was old when I was young, which makes it really old. That is not inherently bad, it is just that 19th century biologists were driven to name things so they could put whatever they found into a cubby hole. Then say, 'See we know what this is all about because it has a name'. People have done this forever - if you can apply a name to something - classify it - then you are off the hook for really understanding the phenomenon. Or even thinking about it maybe.

You seem to have knack for digging this stuff up. A freshly minted PhD would probably wonder where all these oddball terms came from unless they took a History of Science class in their field. It was a required class for me 50+ years ago.
 
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1. What is morphollaxis?

Morphollaxis is a type of regeneration in which the missing or damaged tissue is replaced by the reorganization of existing cells.

2. What is epimorphosis?

Epimorphosis is a type of regeneration in which the missing or damaged tissue is replaced by the proliferation and differentiation of stem cells.

3. What is the main difference between morphollaxis and epimorphosis?

The main difference between morphollaxis and epimorphosis is the source of the new tissue. In morphollaxis, the new tissue is formed from existing cells, while in epimorphosis, the new tissue is formed from stem cells.

4. Can both morphollaxis and epimorphosis occur in the same organism?

Yes, both morphollaxis and epimorphosis can occur in the same organism, depending on the type of tissue that needs to be regenerated and the extent of the damage.

5. Which type of regeneration is more common in animals?

Epimorphosis is more common in animals, as it allows for the replacement of large amounts of tissue and the restoration of complex structures. However, some animals, such as hydra, mainly use morphollaxis for regeneration.

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