Final answer:
The Charophytes, a group of green algae, gave rise to land plants. They share traits with land plants, such as the formation of sporopollenin and flagellated sperm. The evolution of land plants involved adaptations like the development of vascular tissues.
Step-by-step explanation:
The algal lineage that gave rise to land plants is the Charophytes, a group of green algae that includes the orders Charales, Zygnematales, and Coleochaetales. These algae can be traced back 420 million years and share several traits with land plants, such as the formation of sporopollenin, a tough outer layer that protects spores, and the presence of flagellated sperm. The evolution of land plants from these algal ancestors involved adaptations such as the development of vascular tissues, which allowed them to grow larger and thrive on land.