Biology: Life on Earth with Physiology (11th Edition)
Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 25, Problem 1AC
Summary Introduction

To determine:

The class of hagfish, whether it is vertebrate or invertebrate.

Introduction:

All the animals found on the earth can be classified into two clear groups: vertebrate and invertebrates. The distinguishable feature between vertebrates and invertebrates is the presence of spinal cord or vertebral column.

Summary Introduction

To determine:

Whether the hagfishes are vertebrate or invertebrate, by taking one characteristic into consideration

Introduction:

The prime condition to be classified as vertebrates is to possess a spinal cord. Invertebrates may possess skull but lacks spinal cord.

Summary Introduction

To explain:

The importance to be able to place them in any of the two categories.

Introduction:

When taxonomists recognized many of the animals, but those animals did not share the same characters, then the taxonomists felt the requirement to classify them with their unique features. Dividing the individuals into different classes and groups made the classification easy for the species which were being discovered with the time.

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