Final answer:
The earliest land plants were simple vascular plants that did not produce seeds but reproduced through spores, including mosses, liverworts, and primitive vascular plants.
Explanation:
The earliest land plants were most likely related to modern-day mosses or bryophytes. These early plants appeared around 500 million years ago and were followed by liverworts and primitive vascular plants like pterophytes.
These early land plants did not have complex vascular systems but rather basic vascular tissues for water and nutrient transport. They did not produce seeds but reproduced through spores.
Examples of these early plants include mosses, liverworts, and ferns, which are all seedless vascular plants that played crucial roles in the colonization of land by plants.
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