Phylum Tracheophyta

Phylum Tracheophyta

Plant life that began in the sea gradually evolved into species that could live on land. Some like the mosses remained small but others developed an interior plumbing system and rigid supporting tissues that allowed them to grow much bigger. The woody tissue of trees and capillary tubes for transporting water and sugars makes it possible for trees to reach a great size. Plants that have conducting tubes (tracheae) are known as Tracheophytes and here you see a section through a Tracheophyte stem. [CH] {TP}