Principles of Biology
Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 35.1, Problem 1CC
Summary Introduction

To analyze:

The ways by which the lack of an external skeleton is an advantage for animals.

Introduction:

The exoskeleton is a tough body covering that is present exterior to the body of an invertebrate. It is composed of chitin, minerals, and calcium.

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Although the most diverse and numerous animal groups on Earth have exoskeletons, this type of skeleton has some disadvantages when compared to endoskeletons. Describe any two potential disadvantages of exoskeletons.
Most land animals with exoskeletons are smaller than the volume of a mouse, and most vertebrates are larger than a mouse (marine invertebrates can be somewhat bigger). What keeps an insect with an exoskeleton from being as big as a horse?
Why do some vertebrates possess cartilaginous endoskeletons while otherspossess bony endoskeletons? Give at least two examples.
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The Skeletal System; Author: Professor Dave Explains;https://www.youtube.com/watch?v=f-FF7Qigd3U;License: Standard YouTube License, CC-BY