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Question

Which of the following statement(s) is/are correct? More than one option may be correct!


  1. Fragmentation allows spirogyra to reproduce rapidly.

  2. Regeneration always results in reproduction and always occurs intentionally.

  3. Planaria reproduces by fragmentation.

  4. Reproduction by fragmentation requires regeneration.


Solution

The correct options are
A

Fragmentation allows spirogyra to reproduce rapidly.


C

Planaria reproduces by fragmentation.


D

Reproduction by fragmentation requires regeneration.


Few organisms reproduce by fragmentation. In organisms like Spirogyra, each cell when matures, breaks into pieces and then each piece grows into full grown organism. In Planaria, if the organism is cut into many pieces, each piece has the ability to grow into full grown organism.Thus, fragmentation is always associated with regeneration.

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