EVERYDAY SCIENCE

Detailed explanation-1: -Bryophytes such as mosses and algae are non-vascular plants. They do not possess true roots, stems and leaves. Xylem and phloem are absent. Bryophytes include liverworts, hornworts and mosses. The main plant body of non-vascular plants is a haploid gametophyte, which is the dominant stage of their lifecycle.

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: -Algae. Algae are a large group of generally aquatic plants. Like bryophytes, algae are nonvascular: They lack the xylem and phloem tissues that transport fluids and nutrients internally.

Detailed explanation-4: -Nonvascular plants do not have vascular tissues like xylem and phloem, while vascular seedless plants do.