Which of the following types of reproductive barriers separates two flowering plant species that could interbreed except that one has a deep flower tube and is pollinated by bumblebees,whereas the other has a short,narrow flower tube and is pollinated by honeybees?

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Quizplus · Accepted Answer

The reproductive barrier in this scenario is mechanical isolation because the difference in flower tube length and shape prevents the transfer of pollen between the two species, even though they share overlapping habitats and could potentially interbreed if not for this barrier. Behavioral isolation would involve differences in courtship or mating rituals, habitat isolation would involve physical separation of the two species, and gametic isolation would involve incompatibility between the gametes (sperm and egg) of the two species.

Which of the Following Types of Reproductive Barriers Separates Two