![](https://nthumb.tpgimages.com/mid2_com_img/1339/7978/TOP10175466.jpg)
Pollen. Coloured scanning electron micrograph (SEM) of pollen grains emerging from the stamen of an azalea flower (Rhododendron sp.). Pollen grains contain a plant's male gametes. When they come into contact with an ovule (female gamete) of a plant from the same species, they fertilise it, producing a seed. The ovule can belong to the same plant (self-pollination) or the pollen can be blown or carried by an insect to a different plant (cross-pollination).
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TOP10175466
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達志影像
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RM
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