When the pollen of one plant species will not germinate on the flower of another species, it is an example of
A) temporal isolation.
B) hybrid inviability.
C) hybrid infertility.
D) hybrid vigor.
E) gametic incompatibility.

Question

Quizplus · Accepted Answer

Gametic incompatibility occurs when the gametes (e.g., pollen and ovule) from two different species are unable to fuse or when pollen from one species cannot germinate on the stigma of another species, preventing fertilization and thus maintaining species boundaries.

When the Pollen of One Plant Species Will Not Germinate