Pteridophytes are seedless plants; being such, they are incapable of passing on their genetic material to their offspring using cones, fruits, or seeds. Instead, this classification of plants produces spores that are located on the underside of their leaves, known as sporophylls.r
Gymnosperms, as compared with other plant phyla, include the tallest, the thickest, and the oldest living plants. They are widely distributed in the planet but dominate the temperate and arctic regions.
Angiosperms[8], also referred to as the flowering plants, are the most diverse plant phylum with at least 260,000 living plant species .Angiosperms display a vast diversity of plants as they include trees, herbs, shrubs, bulbs, epiphytes (parasitic plants), and plants living in both marine and freshwater habitats.
A perennial plant or simply perennial is a plant that lives more than two years. The term is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also widely used to distinguish plants with little or no woody growth (secondary growth in girth) from trees and shrubs, which are also technically perennials