Emphasizing the central role of evolution in generating diversity, this best-selling text describes animal life and the fascinating adaptations that enable animals to inhabit so many ecological niches. Featuring high quality illustrations and photographs set within an engaging narrative,Integrated Principles of Zoologyis considered the standard by which other texts are measured. With its comprehensive coverage of biological and zoological principles, mechanisms of evolution, diversity, physiology, and ecology, organized into five parts for easy access, this text is suitable for one- or two-semester introductory courses.

Part 1 Introduction to Living Animals

1 Life: Biological Principles and the Science of Zoology

2 The Origin and Chemistry of Life

3 Cells as Units of Life

4 Cellular Metabolism

Part 2 Continuity and Evolution of Animal Life

5 Genetics: A Review

6 Organic Evolution

7 The Reproductive Process

8 Principles of Development

Part 3 Diversity of Animal Life

9 Architectural Pattern of an Animal

10 Classification and Phylogeny of Animals

11 Unicellular Eukaryotes: Protozoan Groups

12 Sponges and Placozoans

13 Radiate Animals

14 Flatworms, Mesozoans, and Ribbonworms

15 Gnathiferans and Smaller Lophotrochozoans

16 Molluscs

17 Annelids and Allied Taxa

18 Smaller Ecdysozoans

19 Trilobites, Chelicerates, and Myriapods

20 Crustaceans

21 Hexapods

22 Chaetognaths, Echinoderms, and Hemichordates

23 Chordates

24 Fishes

25 Early Tetrapods and Modern Amphibians

26 Amniote Origins and Nonavian Reptiles

27 Birds

28 Mammals

Part 4 Activity of Life

29 Support, Protection, and Movement

30 Homeostasis: Osmotic Regulation, Excretion, and Temperature Regulation

31 Homeostasis: Internal Fluids and Respiration

32 Digestion and Nutrition

33 Nervous Coordination: Nervous System and Sense Organs

34 Chemical Coordination: Endocrine System

35 Immunity

36 Animal Behavior

Part 5 Animals and Their Environments

37 Animal Distributions

38 Animal Ecology

Glossary

Credits

Index