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Which of the following organisms reproduces primarily through the process of fragmentation?
Spirogyra
Amoeba
Plasmodium
Leishmania
Spirogyra
Spirogyra is a filamentous green alga that reproduces primarily through fragmentation. Upon reaching maturity, the algal filament breaks into two or more distinct fragments, each of which develops into a new, independent organism.
Spirogyra is a filamentous green alga that reproduces primarily through fragmentation. Upon reaching maturity, the algal filament breaks into two or more distinct fragments, each of which develops into a new, independent organism.
Think of it like a chain made of identical snap-together blocks; if the chain breaks, each piece is still a complete chain segment that can continue to grow.
F-S: Fragments grow into Spirogyra.
Fragmentation is a form of asexual reproduction where the body of a multicellular organism with relatively simple body organization breaks up into smaller pieces upon maturation. Each fragment undergoes cell division and differentiation to regenerate the lost parts and grow into a complete new individual. This process is distinct from regeneration, as fragmentation is a planned reproductive strategy.
Spirogyra is a multicellular, filamentous alga.
Fragmentation occurs due to physical breakage or natural maturation.
Each fragment contains genetic information to regrow the entire organism.
It is a form of vegetative/asexual reproduction.
Rapid population growth in favorable conditions
Does not require a mate
Low genetic diversity
Susceptible to environmental changes as offspring are clones
Algal bloom formation
Colonization of stagnant water bodies
| Feature | Spirogyra | Amoeba |
|---|---|---|
Reproductive Process | Fragmentation | Binary Fission |
Option B (Amoeba) reproduces via binary fission, where the cell divides into two equal halves.
Option C (Plasmodium) reproduces via multiple fission, where a single cell splits into many daughter cells simultaneously.
Option D (Leishmania) reproduces via longitudinal binary fission, common in organisms with a whip-like structure.
A is correct тАФ Spirogyra uses fragmentation as a primary mode of asexual reproduction due to its simple filamentous body structure.
Always differentiate between Fragmentation and Regeneration; Regeneration is the ability to regrow lost parts (e.g., Planaria), whereas Fragmentation is the intentional breaking of the body for the purpose of producing new offspring.
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