Concept:The evolutionary trend in plants progresses from simple, non-vascular aquatic forms to more advanced, vascular terrestrial plants.
Explanation:Algae are the most primitive and predominantly aquatic ancestors of plants.
Liverworts are the simplest bryophytes, lacking true vascular tissues.
Mosses are also bryophytes but show slightly more advanced structures than liverworts.
Ferns belong to pteridophytes and possess true vascular tissues, making them the most advanced among the given groups.
Therefore, the correct order follows increasing complexity: Algae
→ liverworts
→ mosses
→ ferns.
Answer:A. Algae
→ liverworts
→ mosses
→ ferns