This art history video discussion examines Gian Lorenzo Bernini's "Bust of Medusa," marble, c. 1644-48 (Capitoline Museum).

Biology is designed for multi-semester biology courses for science majors. It is grounded on an evolutionary basis and includes exciting features that highlight careers in the biological sciences and everyday applications of the concepts at hand. To meet the needs of today’s instructors and students, some content has been strategically condensed while maintaining the overall scope and coverage of traditional texts for this course. Instructors can customize the book, adapting it to the approach that works best in their classroom. Biology also includes an innovative art program that incorporates critical thinking and clicker questions to help students understand—and apply—key concepts.

By the end of this section, you will be able to:Compare structural and organization characteristics of Porifera and CnidariaDescribe the progressive development of tissues and their relevance to animal complexity

This art history video discussion examines Benvenuto Cellini's "Perseus with the Head of Medusa," c. 1554, bronze (Loggia dei Lanzi, Piazza della Signoria, Florence).

This art history video discussion examines Theodore Gericault's "Raft of the Medusa", oil on canvas, 193 x 282 inches, 1818-19 (Musee du Louvre, Paris).