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Classification of pteridophytes - class-XI

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Multiple Choice

Selaginella and Salvinia are considered to represent a significant step toward the evolution of seed habit because 

  1. Embryo develops in female gametophyte which is retained on parent sporophyte
  2. Female gametophyte is free and gets dispersed like seeds
  3. Female gametophyte lacks archegonia
  4. Megaspore possess endosperm and embryo surrounded by seed coat
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