Hydra, starfish, planaria undergo:

This question was previously asked in
RRC Group D Previous Paper 33 (Held On: 3 Oct 2018 Shift 2)
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  1. sporulation
  2. regeneration
  3. Budding
  4. fragmentation

Answer (Detailed Solution Below)

Option 2 : regeneration
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RRB Group D Full Test 1
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Detailed Solution

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The correct answer is regeneration.

Key Points

  • Regeneration - In this process, an animal gets the ability to recover its lost part.
  • Regeneration occurs in organisms like hydra, flatworms, tapeworms. They have highly adaptive regenerative capabilities.
  • This asexual reproduction is found in hydra, starfish, and planaria.
  • Fragmentation - In this process, the breaking up parent animal into small parts, each can grow a new complete individual.

Mistake Points

  • Since the question asks about all three, the answer would be regeneration.
  • The source for the same can be found here.
  • The terms regeneration and fragmentation are sometimes used alternatively, but are actually different processes.
  • Also, Hydra has 2 methods of reproduction , Regeneration and Budding

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