Morphallaxis - regeneration, Biology

Assignment Help:

Morphallaxis - Regeneration

This kind of regeneration takes place in plants, sponges and coelenterates such as jelly fishes and hydra. The missing parts are replaced via reorganization or re-modelling of the pre-existing ones. The wound is healed and the re-neighboring tissues re-organize themselves into whatever parts might have been lost or removed. So in this type of regeneration the residual part of the animal is able of restoring the lost part or giving rise to the whole organism just by remodelling or reorganising the entire available mass of cells into a new whole. The process does not include growth until the lost part or the whole body is regenerated, which is necessarily small at first.

Growth to reach normal size occurs later. Morphallactic regeneration can occur in total absence of cell division, as is seen in the case of regeneration in Hydra. A part of Hydra as small as l/200th of the original individual can make a complete animal without cell proliferation being involved. Thus even a few cells are able of forming a new organism; similarly in sponges a few archaeocytes are capable of regenerating a whole sponge body. The morphallactic procedure of regeneration is observed only in lower groups of animals. Animals with much more complex organisation regenerate their parts differently, generally by the production of a specialized bud or blastema.


Related Discussions:- Morphallaxis - regeneration

Explain adverse effects of zidovudine, Explain Adverse effects of Zidovudin...

Explain Adverse effects of Zidovudine  It include anemia, neutropenia, nausea, vomiting, headache, fatigue, confusion, malaise, myopathy, hepatitis, and hyperpigmentation of or

Regulation of alkalinity and acidity of the plasma, Q. In which nephron por...

Q. In which nephron portion does the regulation of alkalinity and acidity of the plasma occur? The regulation of the acid-basic equilibrium of the body is done by the kidneys a

Explain the mechanical requirements of implant materials, Mechanical requir...

Mechanical requirements of implant materials Dental implant s must be able to sustain and transfer loads -It should have adequate mechanical strength in order to distribute th

Silver point extended below canal orifice-endodontics, Silver point extende...

Silver point extended below canal orifice: - This discrepancy between the round silver wire and an irregularly shaped canal provides the clinician with an opportunity to use so

Oogenesis, Oogenesis Oogenesis is the formation of ovum from oogonial...

Oogenesis Oogenesis is the formation of ovum from oogonial cells that are formed in the ovary from primordial germ cells. And as in spermatogenesis it involves meiosis to pro

How can we prevent the misuse of discoveries about the brain, How can we pr...

How can we prevent the misuse of discoveries about the brain, such as those that suggest how learning and cognition might be enhanced? A. Ethical use and application of neurosc

Green glands of crustaceans, Normal 0 false false false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Standard mrna and fibroblasts, You have discovered a novel alternatively sp...

You have discovered a novel alternatively spliced gene (gene X) and you wish to study its regulation in an in vitro splicing assay.  The alternatively spliced product retains intro

Kuch, how vagina is inserted in cock

how vagina is inserted in cock

Explain the anthropometric measurements, Anthropometric measurements An...

Anthropometric measurements Anthropometry is the study of the measurement of the human body in terms of the dimensions of bone, muscle, and adipose (fat) tissue. Anthropometric

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd