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Metagenesis refers to:

  1. A
    Presence of a segmented body and parthenogenetic mode of reproduction
  2. B
    Presence of different morphic forms
  3. C
    Alternation of generation between asexual and sexual phases of an organism
  4. D
    Occurrence of a drastic change in form during post-embryonic development

Solution & Step-by-step Explanation

In Cnidarians like Obelia, metagenesis is the alternation of generation where polyps produce medusae asexually and medusae form polyps sexually.

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Metagenesis refers to:
A
Presence of a segmented body and parthenogenetic mode of reproduction
B
Presence of different morphic forms
C
Alternation of generation between asexual and sexual phases of an organism
D
Occurrence of a drastic change in form during post-embryonic development

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