| 11. | Three cells die and one that is most distant from the micropyle develops into the megaspore.
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| 12. | The micropyle opening allows the pollen ( a male gametophyte ) to enter the ovule for fertilization.
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| 13. | An obturator is present in the ovary of some plants, near the micropyle of each ovule.
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| 14. | Like the Nacophorini, their caterpillars have many setae on the ( vestigial ) prolegs of micropyle.
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| 15. | In chalazogamous plants, the pollen tubes enter the ovule through the chalaza instead of the micropyle opening.
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| 16. | It is an outgrowth of the placenta, important in nourishing and guiding pollen tubes to the micropyle.
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| 17. | Laser ablation of the border cells or their failure to migrate lead to improper morphogenesis of the micropyle.
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| 18. | A very small slit ( micropyle ) remains, meaning that the megasporangium is still exposed to the atmosphere.
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| 19. | The oocysts have a polar body and a prominent residuum but lack micropyles, sporocyst residua or Stieda bodies.
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| 20. | The top of the egg is depressed and forms a small central cavity called micropyle through which the egg is fertilised.
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