EVERYDAY SCIENCE

Detailed explanation-1: -In land plants, rhizoids are trichomes that anchor the plant to the ground. In the liverworts, they are absent or unicellular, but multicelled in mosses. In vascular plants they are often called root hairs, and may be unicellular or multicellular.

Detailed explanation-2: -Rhizoids have a variety of functions including water transport and adhesion to surfaces in some mosses and liverworts. A similar gene regulatory network controls the development of rhizoids in moss gametophytes and root hairs on the roots of vascular plant sporophytes.

Detailed explanation-3: -Characteristics of Nonvascular Plants They not only lack vascular tissues; they also lack true leaves, seeds, and flowers. Instead of roots, they have hair-like rhizoids to anchor them to the ground and to absorb water and minerals (see Figure below).

Detailed explanation-4: -Rhizoids develop on the gametophytes of some land plants (liverworts, mosses, hornworts, lycophytes and monilophytes).