Difference between Fragmentation, Gemmulation & Regeneration - Practice Questions & MCQ

Fragmentation:

• The parent organism can be divided into many pieces called fragments. 
• Each piece will develop into a complete individual.
• A great example of fragmentation can be seen in spirogyra. 
• Spirogyra is a green alga that floats freely on freshwater ponds. Under a microscope, it can be seen as a rectangular cell with a nucleus in the vacuole located in the centre. 
• The rectangular cells are joined together in long strands called a filament.
• When a filament is divided into many pieces, each piece will grow into individual filaments.

Regeneration:

• Regeneration is asexual reproduction is the ability of a simple organism to re-grow its lost parts.
• Simple organisms are more successful with regeneration than complex organisms. 
• In morphallaxis type of regeneration, the whole body grows from a small fragment.
• It is seen in sponges, hydra, planaria.
• In epimorphosis type of regeneration, the lost body parts are replaced.

Gemmulation:

• Gemmae are unicellular or multicellular propagules.
• These detach from the parent and grow into new individuals.
• For example, Marchantia.