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In some multicellular organisms, the body breaks up into smaller pieces upon maturation and each piece grows into a new organism. What is this known as?
Sexual reproduction
Gamete formation
Fragmentation
Budding
Fragmentation
The process described is known as fragmentation, a form of asexual reproduction where a mature organism's body breaks into distinct pieces, each capable of developing into a new individual. This is commonly observed in simpler multicellular organisms with relatively simple body organizations.
The process described is known as fragmentation, a form of asexual reproduction where a mature organism's body breaks into distinct pieces, each capable of developing into a new individual. This is commonly observed in simpler multicellular organisms with relatively simple body organizations.
Think of it like cutting a flat, unspecialized sponge into pieces; if each piece is large enough and healthy, it simply regrows the missing edges to become a full sponge again.
F-A-R: Fragmentation = Asexual = Regeneration.
Fragmentation occurs when the organism reaches maturity and its body undergoes spontaneous breakage or separation due to environmental factors or internal physiological changes. Since these organisms possess cells capable of extensive cell division and differentiation (high regenerative capacity), each separated piece can regenerate missing body parts to form a complete, genetically identical daughter organism.
Fragmentation is a mode of asexual reproduction.
It typically occurs in organisms with simple body structures like Spirogyra (a filamentous algae).
It differs from regeneration in that it is a planned, natural reproductive process upon maturation, rather than just a response to injury.
The resulting offspring are clones of the parent organism.
Does not require finding a mate.
Allows for rapid population increase under favorable conditions.
Lack of genetic diversity, making the population vulnerable to environmental changes.
Reproduction in Spirogyra.
Growth patterns in certain marine invertebrates like sea stars or sponges.
Option A (Sexual reproduction) involves the fusion of gametes and genetic recombination.
Option B (Gamete formation) is a precursor step to sexual reproduction, not the process of breaking into pieces.
Option D (Budding) involves the formation of a small outgrowth (bud) from the parent body, rather than the breaking of the entire body into fragments.
C is correct тАФ The process where a multicellular body breaks into pieces upon maturation to form new individuals is called fragmentation.
Distinguish between 'fragmentation' and 'regeneration': Regeneration is often an accidental response to tissue damage, whereas fragmentation is a deliberate reproductive strategy in specific simple organisms.
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