Most algal genera are haplontic,but some of them such as $A$,$B$,and $C$ are haplo-diplontic. Here $A$,$B$,and $C$ refer to:

  • A
    $A-Ectocarpus, B-Polysiphonia, C-Kelps$
  • B
    $A-Volvox, B-Spirogyra, C-Kelps$
  • C
    $A-Spirogyra, B-Polysiphonia, C-Ectocarpus$
  • D
    $A-Volvox, B-Kelps, C-Ectocarpus$

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