The pollen grain then germinates into a tube that guides the male reproductive cells to the depths of the ovary, picking up signals along the way that reveal the location of an ovule. Blocking signals ...

Wind is not an efficient pollinator, however. The probability of one pollen grain landing in the right location – the stigma or ovule of another plant of the same species – is infinitesimally ...

these pollen grains can then come into contact with another flower’s pistil, the rod-like structure typically located in its centre that contains the ovules, each of which in turn contains an ...

A pollen grain starts to grow if it lands on the stigma of a flower of the correct species. A pollen tube grows through the style of the flower until it reaches an ovule inside the ovary.

Wind is not an efficient pollinator, however. The probability of one pollen grain landing in the right location—the stigma or ovule of another plant of the same species—is infinitesimally small.