By Rebecca L. Johnson
In Plant and Animal Systems: Similar Solutions for Life, students learn that plants and animals have much in common—in fact, they are more alike than different. Because flowering plants and vertebrate animals face many of the same challenges in staying alive, they have evolved analogous body systems that carry out the functions of life—breaking down food, transporting nutrients and water, exchanging gases, and coordinating activities, among others. Students learn that both animals and plants have levels of organization that start with cells. Cells become organized into tissues, tissues combine to form organs, and organs work together in systems. At the end of each two-page spread, a brief statement called The Bottom Line reinforces students’ understanding by summing up the key ideas about plant and animal systems covered in those pages.