5 Written Questions

1. Serial repetition of a similar body segments along longitudinal axis of body. Annelids, Arthropods, Chordates
   Permits greater body mobility and complexity of structure and function
   Hydrostatic skeleton
2. Cells take on different, specialized jobs.
3. Multicellular animals
4. gut and visceral organs, E.T
5. Simplest eukaryotic orgnisms

5 Matching Questions

1. Flagella
2. Ectoderm
3. Acoelomate
4. Spherical symmetry
5. Macroevolution

1. a Nervous tissue, E.T.
2. b No body cavity. After blastula formation, cells reorganize to form adult body.
3. c Whip like organelle of locomotion.
4. d Any plane passing through the center divides the body into mirrored halves. Best suited for floating and rolling. Found chiefly among some unicellular forms. Rare in animals.
5. e Scale of analysis above species level occurs over geologic time (great periods of time). A change in the characteristics of a lineage through time. Change in allele frequencies through time.

5 Multiple Choice Questions

1. Two distinct tissue layers derived from embryonic germ layers. Ectoderm and Endoderm.
   1. Coelomate
   2. Triploblastic
   3. Cilia
   4. Diploblastic
2. Scale of analysis at the species or population level variation within a population. Changes in allele frequency from one generation to the next.
   1. Coelomate
   2. Microevolution
   3. Segmentation
   4. Macroevolution
3. No division of labor. Cells live in colonies/groups, not one organism.
   1. Cilia
   2. Colonial cells
   3. Coelomate
   4. Flagella
4. Central Body Cavity. Called a coelom. True body cavity (completely lined by mesoderm)
   1. Acoelomate
   2. Cellular
   3. Coelomate
   4. Pseudocoelomate
5. A hair like, vibratile organelle process found on many animal cells. Cilia may be used in moving particles along the cell surface, or in ciliated unicellular forms, for locomotion.
   1. Cellular
   2. Cilia
   3. Flagella
   4. Bilateral

5 True/False Questions

1. Triploblastic → Two distinct tissue layers derived from embryonic germ layers. Ectoderm and Endoderm.

   True        False

2. Radial Symmetry → Body divided into similar halves by more than 2 planes passing through longitudinal axis. Usually sessile, freely floating, or weakly swimming animals. No anterior or posterior ends. Can interact with environment in all directions.

   True        False

3. Cellular → Cells demonstrate division of labor but are not strongly associated to perform a specific collective function.

   True        False

4. Pseudocoelomate → Central Body Cavity. Called a coelom. True body cavity (completely lined by mesoderm)

   True        False

5. Bilateral → Organism can be divided along a sagittal plane into to mirror portions. Much better fitted for directional movement. Associated with cephalization.

   True        False