Learning Outcomes 1.1 INTRODUCTION TO ZOOLOGY 1. Appraise the importance of evolution as a unifying concept in zoology. 2. Explain how our taxonomic system is hierarchical. 1.2 ZOOLOGY: AN EVOLUTIONARY PERSPECTIVE 1. Differentiate various approaches to the science of zoology 1.3 ZOOLOGY: AN ECOLOGICAL PERSPECTIVE 1. Use an example to generate an explanation for the importance of ecology as a unifying concept in zoology. 2. Analyze the relationships between human population growth and threats to world resources. Chapter Summary Zoology, the study of animals, is a subset of the broad discipline of biology. Animals demonstrate incredible diversity, which necessitates numerous sub-disciplines for their study. Within the subdisciplines of Zoology, scientists may further specialize to study the functional, structural, or ecological aspects of particular groups. Later lectures will cover animal cells and whole animals in more detail. Answers to End of Chapter: Review and Apply 1.1 Introduction to Zoology a) While it is possible for a zoologist to be well-informed on a wide range of zoological topics, the zoology field is so large that zoologists generally confine their research interests to one, or a few, of the subdisciplines listed in tables 1.1 and 1.2. Many zoologists spend their research careers in a narrow zoological field where developing expertise requires staying current on a large body literature and research by other workers. Other zoologists devote their careers primarily to teaching a wider range of zoological topics. Still other zoologists combine both highly specialized research interests and some teaching. b) All species, includ