AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
Fragmentation is the breaking up of a mature organism into smaller pieces (fragments), each of which grows into a new individual. Example: Spirogyra.
Source: Chapter 7, Section 7.2.2 – Fragmentation
The answer needs two parts: define fragmentation + give one example. Spirogyra is the textbook example given in this section. Examiners expect the keyword "breaks/fragments into pieces" and that each piece grows into a new individual. Do not confuse fragmentation with regeneration (Hydra/Planaria) — regeneration involves cut pieces regrowing, while fragmentation in Spirogyra occurs naturally upon maturation.