Question

explain fragmentation with the help of diagram in planaria​

Answer 1

Fragmentation is a method of asexual reproduction in which an organism breaks into fragments on maturation. Eg:-spirogyra. Regeneration is a mode of asexual reproduction for specific organisms that on being cut, each part gives rise to new organisms. Diagram is there on ncert pg. No.131.

Answer 2

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Fragmentation is a process of reproduction seen in certain multicellular organisms which posses a simple body organisation, that is their body is not differentiated into complex organs or specialised tissues. They produce by splitting their body into several small pieces called fragments.

Fragmentation is most commonly seen in green filamentous alga- Spirogyra. It also occurs in mycelial fungi and thalloid bryophytes.

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