Zoology is organized into three parts. Part One covers the common life processes, including cell and tissue structure and function, the genetic basis of evolution, and the evolutionary and ecological principles that unify all life. Part Two is the survey of protists and animals, emphasizing evolutionary and ecological relationships, aspects of animal organization that unite major animal phyla, and animal adaptations. Part Three covers animal form and function using a comparative approach. This approach includes descriptions and full-color artwork that depict evolutionary changes in the structure and function of selected organ systems.

Features:


Incorporating feedback from current users and reviewers of the text, there has been an overall update of content throughout. The ecological perspective remains at the forefront of the book.

In response to reviewer suggestions, pronunciations have been added to the Key Terms list at the end of each chapter as well as the glossary.

The most up-to-date phylogenetic evolutionary tree has been added to the front cover of the book. This diagram will allow students immediate and continual reminders of the relationships among the animal phyla they are studying.

In response to reviewer suggestions Concept Review questions (with answers) which include both true/false and multiple choice have been added to the end of each chapter.

Chapter 8 has been completely rewritten in accordance with the 2005 reclassification of the Eukarya by the International Society of Protistologists. Emphasis is placed on the medically important protists.

Chapter 10 includes coverage of two new phyla (1) Acoelomorpha and (2) Cycliophora, one of the most recently described phyla, which contains animals that live only on the mount parts of lobsters.

Chapter 15 has been extensively revised, including the addition of examples and photographs. It contains updated information and expanded coverage of insect thermoregulation using the honeybee as an example. Expanded coverage on insect development includes more details on advantages of holometabolous metamorphosis.