DENDROLOGY

Detailed explanation-1: -Mosses and liverworts are small, primitive, non-vascular plants. They lack the conductive tissue most plants use to transport water and nutrients. Instead, moisture is absorbed directly into cells by osmosis.

Detailed explanation-2: -Nonvascular plants (often referred to collectively as the bryophytes) include three groups: the mosses (Bryophyta), approximately 15, 000 species; liverworts (Hepaticophyta), approximately 7500 species; and hornworts (Anthocerophyta), approximately 250 species (Table 1).

Detailed explanation-3: -They don’t have true leaves, stems, or roots, but they do have a dominant part of the plant called the gametophyte that can photosynthesize. Nonvascular plants absorb water through their root-like structures called rhizoids, and they rely on osmosis to transport water from cell to cell.