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Identify the INCORRECT statement about regeneration.
Amoeba exhibit regeneration.
Hydra and Planaria show regeneration mode of reproduction.
Specialised cells are responsible for regeneration.
These specialist cells multiply rapidly and produce a large number of new cells.
Amoeba exhibit regeneration.
Regeneration is a process where an organism regrows lost body parts or develops into a new individual from fragmented pieces. While organisms like Hydra and Planaria exhibit true regenerative reproduction due to specialized cells, Amoeba reproduces primarily through binary fission, not regeneration.
Regeneration is a process where an organism regrows lost body parts or develops into a new individual from fragmented pieces. While organisms like Hydra and Planaria exhibit true regenerative reproduction due to specialized cells, Amoeba reproduces primarily through binary fission, not regeneration.
Think of regeneration like a blueprint-driven construction; if a complex building (Hydra) is cut, the workers (specialized cells) follow the blueprint to rebuild the missing wing. Amoeba dividing is more like photocopying a document, where the whole thing simply splits in two.
Remember 'H-P-R' for 'Hydra-Planaria-Regenerate'.
NtтАЛ=N0тАЛ├Ч2n тАФ where NtтАЛ is the population after n cycles of binary fission
In organisms like Hydra and Planaria, regeneration is driven by undifferentiated interstitial cells (stem cells). When the body is cut, these specialized cells migrate to the site of injury, proliferate through mitosis, and differentiate into the various tissues required to reconstruct the missing body parts.
Regeneration is not the same as reproduction for all organisms.
True regenerative reproduction requires the ability to form a complete organism from any body fragment.
Amoeba utilizes asexual binary fission, where the parent cell divides into two daughter cells.
Complex organisms have limited regeneration, often restricted to wound healing or limb replacement.
Allows survival after injury
Provides a means of asexual reproduction for simple invertebrates
Requires high metabolic energy
Not possible for complex organisms with highly specialized organ systems
Tissue engineering research
Study of stem cell therapy
Amoeba reproduces via binary fission, which involves mitosis and cytokinesis.
Option A is incorrect because Amoeba does not use regeneration as its primary mode of life cycle completion.
Options B, C, and D are scientifically accurate descriptions of the regenerative process in multicellular organisms like Planaria.
A is correct тАФ Amoeba does not exhibit regeneration as a mode of reproduction; it reproduces primarily through binary fission.
Always distinguish between 'reproduction' (making new offspring) and 'repair' (healing tissues). Simple organisms use regeneration for reproduction, whereas complex ones use it only for healing.
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