Small specialized roots called coralloid roots associated with $N_2$-fixing cyanobacteria. This is characteristic of...........

  • A
    Angiosperms - Wolffia
  • B
    Gymnosperms - Cycas
  • C
    Pteridophytes - Dryopteris
  • D
    Bryophytes - Polytrichum

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The diploxylic condition in $Cycas$ occurs in:

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The phloem of gymnosperms and angiosperms differs due to the presence or absence of . . . . . . .

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