Concept:Rhizoids are root-like structures that anchor plants like liverworts to the ground.
Explanation:Liverwort rhizoids are made of a single cell.
They are also unbranched, meaning they do not form side branches.
In contrast, mosses have multicellular and branched rhizoids.
Vascular plants often have root hairs instead of rhizoids.
Therefore, the correct description of liverwort rhizoids is unicellular and unbranched.
Answer:A. unicellular and unbranched
