Chapter 28, Problem 9TYK

Summary Introduction

Introduction:

The plant kingdom is divided into many phyla based on their structures, ability to live on land and other features. Ferns fall under the phylum monilophyta, and are represented by woody stems. The plants evolved to live on land by developing certain features, which helped them to conduct water and sugars. The early earth had plants that lived in water and had been mostly avascular. During the course of evolution, the vascular system developed and other parts also became modified.