AP BIOLOGY

Detailed explanation-1: -Primary plants in all the bryophytes are the haploid gametophytes. They are the only diploid portion being associated with sporophytes. It consists of a sporangium and stalk. Such plants do not have a lignified tissue for conduction and cannot grow as tall as the vascular species.

Detailed explanation-2: -Non-Vascular plants cannot grow very tall and because of their small sizes they can absorb enough water to carry materials throughout the plant.

Detailed explanation-3: -Because these plants lack lignified water-conducting tissues, they can’t become as tall as most vascular plants.

Detailed explanation-4: -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).