Chapter 21.13, Problem 3MC

Summary Introduction

To determine:

The important adaptation process of vertebrate that arose in fishes which enables them to adapt on land

Concept introduction:

The phylum Chordata is divided into two classes: vertebrates and invertebrates. The vertebrate chordates contain unique characteristic features which distinct them from other group of animals. Fishes represent the first familiar vertebrate on earth. All land based vertebrates are evolved from ancestral fishes.