HORTICULTURE

Detailed explanation-1: -Nonvascular Plants. 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-2: -Mosses, hornworts, and liverworts are nonvascular plants called Bryophytes. There are an estimated 17, 000 species of bryophytes and occupy almost every habitat type. Some species of algae are also considered nonvascular plants, particularly green algae.

Detailed explanation-3: -They lack true roots, stems, or leaves. They are called non-vascular plants because of the absence of vascular tissues (xylem and phloem) that functions for the conduction of food, water, and minerals.