Question

Morphallaxis is
A. Reconstruction of the whole body
B. Growth of the lost limb
C. Healing of injury
D. Regeneration with the help of blastema

Answer 1

Hint:
The process of prophylaxis is concerned with the phenomenon of regeneration. It involves regeneration with the help of existing body tissues. The growth of lost tissues of the body due to damage is called regeneration.

Complete answer:
Morphallaxis is the reconstruction of the whole body.
* Morphallaxis, a cycle of tissue redesign saw in many lower creatures following extreme injury, for example, division of the creature, and including the breakdown and renewal of cells, development of organs, and redifferentiation of tissues. The outcome is generally a littler yet complete individual, gotten totally from the tissues of part of the first creature.
* The first case of morphallaxis was studied in Cnidarian Hydra, where when the creature is cut off in two (by effectively cutting it with, for instance, a careful blade) the staying cut off segments structure two completely utilitarian and free hydra.
* The outstanding component of morphallaxis is that a vast dominant part of recovered tissue originates from effectively present tissue in the creature. That is, the one cut off a segment of the hydra structures into a littler adaptation of the first hydra, roughly a similar size as the cut off segment. Thus, we conclude that there is a "trade" of tissue.

So, we can say that the process involves the regeneration of the whole organism from a small fragment. So, the correct answer is (A) option.

Additional information: The organism formed after the process of morphallaxis is quite small as compared to the original one and it was first studied in Hydra.

Note: Morphallaxis is a process where tissue is actually exchanged which is mostly misunderstood with the term epimorphosis as it is also regeneration but of a part of an organism with a cut surface and the example includes the phylum Platyhelminthes, eg- Planaria.