What is a rhiziod?

Answer 1

* [rahy-zoid] - (in mosses, ferns, etc.) one of the rootlike filaments by which the plant is attached to the substratum.

Answer 2

A rhizoid is a thread-like structure that is found in certain non-vascular plants, such as mosses and liverworts. Rhizoids function in anchoring the plant to the substrate and absorbing water and nutrients from the environment. They are not true roots, as they lack vascular tissue.