You might think flowers don't have much choice about who they mate with, given they are rooted to the ground and can't move. But when scientists from Nagoya, Japan used powerful microscopes to study ...

(A) Pollen grains generated from the stamen pollinate at the tip of the pistil. Pollen tubes grow inside the pistil towards the ovule located in the placenta. (B) The pollen tubes are guided to the ...