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Unformatted text preview: Name: ________________________ Class: ___________________ Date: __________ ID: A 1 Chapter 40 Animal Form and Function Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. How do animal structures well suited to specific functions come about? A Natural selection favors the most functional structures for a particular environment. B Mutations arise to provide required structures for survival in a particular environment. C An animal that needs a new function will develop a new structure to provide it. D Animals invent structural designs that enhance their functions. E Animals continually improve their structures in order to improve their functions. ____ 2. Which represent adaptations to the same environmental challenge? A gastrovascular activity, two-layered body, and torpedo shape B large volume, long tubular body, wings C external respiratory surface, small size, two-layered body D complex internal structures, small size, large surface area E branched internal surfaces, small size, moist outer covering ____ 3. Why do sharks, penguins, and aquatic mammals have the same fusiform body shape? A Natural selection shapes similar adaptations when diverse organisms face the same environmental challenge. B Respiration through gills is enhanced by having a fusiform shape. C The laws of hydrodynamics constrain the shapes that are possible for aquatic animals that swim very fast. D A and C only E A, B, and C ____ 4. Which of the following ideas is not consistent with our understanding of animal structure? A The environment imposes similar problems on all animals. B The evolution of structure in an animal is influenced by its environment. C All but the simplest animals demonstrate the same hierarchical levels of organization. D Different animals contain fundamentally different categories of tissues. E Short-term adjustments to environmental changes are mediated by physiological organ systems. ____ 5. Regardless of their size, the one thing that is common to all animals is A an external body surface that is dry. B a basic body plan that resembles a two-layered sac. C the use of homeostatic mechanisms to control their internal environment. D the use of positive and negative feedback cycles to regulate body water content. E having cells surrounded by an aqueous medium. ____ 6. Which of the following is a problem faced by animals as they increase in size? A decreasing surface-to-volume ratio B reproducing in aqueous environments C the tendency for larger bodies to be more variable in metabolic rate D A and B only E A, B, and C ____ 7. An increase in which of the following parameters is most important in the evolution of specialized exchange surfaces such as the linings of the lungs or intestines?...
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This note was uploaded on 02/03/2011 for the course BIO 5A taught by Professor Zhu/cardullo/rao during the Fall '08 term at UC Riverside.
- Fall '08