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Which among the following organisms reproduce by regeneration method?
Bryophyllum
Rhizopus
Planaria
Yeast
Planaria
Regeneration is an asexual mode of reproduction where an organism grows back lost or damaged parts, or in specialized cases, develops into a completely new individual from its body fragments. Planaria, a flatworm, is a classic example of an organism that exhibits high regenerative capacity, allowing it to regenerate a full body from a small piece.
Regeneration is an asexual mode of reproduction where an organism grows back lost or damaged parts, or in specialized cases, develops into a completely new individual from its body fragments. Planaria, a flatworm, is a classic example of an organism that exhibits high regenerative capacity, allowing it to regenerate a full body from a small piece.
Think of it like a magical Lego set: if you break a finished structure into several pieces, each piece has the internal instructions and the 'construction blocks' to rebuild itself back into the full original structure.
Planaria = 'Plana-Re' (Planaria Regenerates)
NtтАЛ=N0тАЛ├Ч2n тАФ simplified theoretical growth representation where n is the number of regenerative cycles
This process is driven by specialized cells called neoblasts, which are undifferentiated stem cells distributed throughout the Planarian body. When the organism is cut, these cells migrate to the wound site and form a blastema, a mass of cells that undergoes rapid mitosis and differentiation to restore lost structures through morphallaxis or epimorphosis.
Regeneration is not the same as reproduction; in many organisms, it is only for wound healing.
Planaria and Hydra show reproductive regeneration.
Regeneration relies on the activity of specialized pluripotent stem cells.
The process involves cell proliferation and morphological reorganization.
Allows population recovery after environmental damage
Effective for organisms with low motility
Limited genetic diversity compared to sexual reproduction
Requires high metabolic energy for tissue reconstruction
Regenerative medicine research
Understanding developmental biology
Bryophyllum reproduces via vegetative propagation (leaf buds).
Rhizopus reproduces via spore formation.
Yeast reproduces via budding.
C is correct тАФ Planaria is a classic example of an organism that performs reproduction through the process of regeneration.
Always differentiate between 'regeneration' (for repair) and 'regeneration' (as a mode of reproduction). Humans have high wound-healing regeneration but cannot reproduce by it.
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