Question

why was the seed a revolutionary adaptation?
proved photosynthesis it eliminated competition
ved reproduction without standing water it made plants taller

Explanation:

Seeds allowed plants to reproduce without relying on standing water. Before seeds, many plants (like mosses and ferns) had flagellated sperm that needed water to swim to eggs. Seeds contain an embryo, stored food, and a protective coat. This adaptation enabled plants to colonize drier habitats and expand their range. Improved photosynthesis is more related to leaf structure and chloroplast efficiency. Eliminating competition is too extreme as seeds don't eliminate all competition. Making plants taller is more about stem structure and growth hormones rather than the seed itself.

Answer:

It enabled reproduction without standing water.