EVERYDAY SCIENCE

Detailed explanation-1: -In whisk ferns, an alternation of gener-ations results in a dominant sporophyte plant producing alike spores (homosporous), which germinate to form 1n (haploid) gametophytes.

Detailed explanation-2: -Whisk ferns are the simplest of the vascular plants. They consist of evenly forking stems with small protuberances called enations. They lack leaves and roots. These ferns have a central vascular cylinder composed of xylem and phloem.

Detailed explanation-3: -Ferns form large leaves and branching roots. In contrast, whisk ferns, the psilophytes, lack both roots and leaves, which were probably lost by evolutionary reduction.

Detailed explanation-4: -A moss sporophyte does not possess true leaves, roots, or a stem. On the other hand, a fern sporophyte is differentiated into true leaves, roots, and a stem. In mosses, the gametophyte (haploid generation) is the dominant stage. On the other hand, in ferns, the sporophyte (diploid generation) is the dominant stage.