Introduction to pteridophytes - class-XI

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Multiple Choice

Which of the following set is not show heterospory and heterophily?

  1. Psilotum, Lycopodium, Pteris and Adiantum
  2. Selaginella, Salvinia, Lycopodium and Pteris
  3. Salvinia, Lycopodium, Selaginella and Psilotum
  4. Salvinia, Selaginella, Azolla and Lycopodium
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