DENDROLOGY

Detailed explanation-1: -A wide seedless vascular plant phylum Pteridophyta that consists of 15000 species. These plants are common and abundant throughout the world. The ferns are homosporous with photosynthetic gametophytes.

Detailed explanation-2: -Nonvascular plants are bryophytes. Despite the dominance of vascular plants today, more than 17, 000 species of bryophytes still survive.

Detailed explanation-3: -VASCULAR PLANTS make up about 80% of all plants. They have special tissues in their stems to move water and nutrients up and down the plant (xylem and phloem). This allows the plant to grow to a much larger size.