Mark the incorrect statement.

  • A
    Outer three layers of anther wall are protective in function.
  • B
    Sporogenous tissue occupies the centre of each microsporangium.
  • C
    Cells of tapetum and endothecium show increase in $DNA$ contents by endomitosis and polyteny.
  • D
    Ploidy level of microspore tetrad is haploid.

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The mature male gametophyte in angiosperms is typically composed of how many cells?

Choose the correct option for $PMC$. (in $n$)

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Identify the incorrect statement regarding sporopollenin.

The tapetum is........

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