For example, the spiral arrangement of scale-bract complexes on ovule-bearing pine cones, where the female reproductive organs of conifers are located, is important to the production of airflow patterns that spiral over the cone’s surfaces, thereby passing airborne pollenfrom one scale to the next.
![](http://imagev2.xmcdn.com/group86/M00/71/7A/wKg5IF8AAL7QkuaqAAAL5GmUas818.jpeg!strip=1&quality=7&magick=jpg&op_type=5&upload_type=cover&name=web_large&device_type=ios)
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