In flowering plants,the archesporium gives rise to.......

  • A
    Only the wall of the sporangium
  • B
    Both the wall and the sporogenous cells
  • C
    The wall and the tapetum
  • D
    Only the tapetum and the sporogenous cells

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In $40\%$ of angiosperms,the pollen grains are shed at which stage?

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The middle layers of the microsporangium are located between which of the following layers?

At which stage of pollen grain development are the male gametes formed?

Identify the labelled part $X$ from the figure:

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