Which evidence most strongly suggests that heterospory affords selective advantages for land plants?

Question

Quizplus · Accepted Answer

The fact that heterospory evolved several times independently in different lineages of land plants suggests that it provided selective advantages in different environments and circumstances. This indicates that heterospory was not a chance occurrence, but a result of natural selection acting on different organisms in different settings.

Which Evidence Most Strongly Suggests That Heterospory Affords Selective Advantages