Like all flowering plants, the snapdragon must be pollinated to reproduce, but its flowers are closed. A bumblebee has just enough weight to open a snapdragon flower by landing on it. What is this adaptation an example of?

coevolution

Explanation:

coevolution occurs when two or more species reciprocally affect each other's evolution through the process of natural selection.

segmentation=endoskeleton=backbone=coelom=tissues

the answer to your question is sperm