Pollens

Why does taxol (a gymnosperm) has no pollen chamber? What is the need of having wings to pollens in Cycas?

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... all know that some flowers employ late-acting systems,in which the ovule aborts when fertilized or shortly after fertilized when the same flower's pollens fall on its stigma. But the abortion will make this flower lose one chance to spread its genes, though this chance will produce a inferior seed. ...

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Thanks to AstusAleator for kind reply. I have further questions? Is it possible for seedlings and pollens? In seedlings, the stored energy has been exhausted and the photosynthesis just begin. In pollens, no photosynthesis occurs. In the process of pollen transfer, does ...

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... give some information on eneregy instead of the building blocks? For example, whether the longevity of pollen depends on the energy reserved in pollens?

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... a pollen cubagy means ? http://www.fukuoka-edu.ac.jp/~fukuhara/keitai/pict/nabewari_kafunkeisei.jpg this is my friends Take pollens photo.

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