Question

Over time, a particular plant has developed a longer stamen. Which of the following is a
possible advantage of having a longer stamen?
choices:
A longer stamen could ensure that an insect brushes against an anther and
picks up pollen.
A longer stamen could ensure that the flower produces more nectar.
A longer stamen could ensure that pollen could reach the ovary and fertilize the
egg.
A longer stamen could ensure that the developing flower is well protected.