24 Plant Reproduction and Response 694
How do changes in the environment affect the reproduction, development, and growth of plants?
24.1 Reproduction in Flowering Plants 696
24.2 Fruits and Seeds 704
24.3 Plant Hormones 708
24.4 Plants and Humans 715
The Green Lemons
Unit 6 Project 726
UNIT 7 Animals 727–858
25 Introduction to Animals 728
What characteristics and traits define animals?
25.1 What Is an Animal? 730
25.2 Animal Body Plans and Evolution 737
Slime Day at the Beach
26 Animal Evolution and Diversity 750
How have animals descended from earlier forms through the process of evolution?
26.1 Invertebrate Evolution and Diversity 752
26.2 Chordate Evolution and Diversity 757
26.3 Primate Evolution 765
Fossil Quest
27 Animal Systems I 780
How do the structures of animals allow them to obtain essential materials and eliminate wastes?
27.1 Feeding and Digestion 782
27.2 Respiration 787
27.3 Circulation 791
27.4 Excretion 794
(Near) Death by Salt Water
28 Animal Systems II 806
How do the body systems of animals allow them to collect information about their environments and respond appropriately?
28.1 Response 808
28.2 Movement and Support 814
28.3 Reproduction 819
28.4 Homeostasis 827
She's Just Like Her Mother!