Name_____________________________________ Biology 201 - Spring 2006 Lake Tahoe Community College Instructor: Sue Kloss Botany – Midterm Exam I. (2 pt. each) Multiple choice. Choose the best answer. 1. Taxonomy is the ___________. a. science of studying new species b. study of how modern organisms are related c. science of classification d. study of plants e. study of interrelationships of organisms 2. Vascular plants include a. flowering plants b. mosses c. seaweed d. a and b e. nonel of the above 3. Complex tissues would include all of the following except a. xylem b. sclerenchyma c. phloem d. periderm e. epidermis 4. If a sieve tube member becomes blocked the plant will experience difficulty in a. transport of minerals b. transport of water c. transport of sugar d. transport of gases e. none of the above 5. Which of the following would you expect to find in the complex tissue called epidermis? a. guard cells b. trichomes c. cuticle d. all of the above e. none of the above 6. Complex tissues are a. different types of cells that work together b. formed primarily of parenchyma, collenchyma, or sclerenchyma cells c. found only in leaves or young stems d. always dead at maturity e. present in pith and cortex of most roots and stems 7. A ____ has its leaflets diverging from along the primary leaf vein. a. monocot leaf b. palmately compound leaf c. pinnately compound leaf d. simple leaf e. simple compound leaf 8. The first leaves to form as part of the plant embryo are the ____. a. habit leaves b. water leaves c. sun leaves d. seed leaves e. shade leaves 9. The embryonic root is the _____. a. primary root b. lateral root c. seminal root d. radicle e. prop root 10. Intercalary meristems a. produce only phloem b. help guard cells c. regulate elongation d. speed up maturation e. are found in dicots 11. The absorbing surface of a root is increased mostly by _____. a. root cap b. root epidermis c. root hairs d. secondary growth e. region of elongation 12. Roots are sometimes initiated by stem tissues or even by leaf tissues. These types of roots are called a. tap roots b. lateral roots c. branch roots d. radicles e. adventitious roots 13. A single layer of cells that controls the entry of water and minerals into the vascular tissue of the root is a. Casparian strip b. lenticel c. cork d. endodermis e. pericycle 14. Monocot stems can be distinguished from dicot stems because monocot stems usually a. have scattered vascular bundles b. have a distinct pith and cortex c. do not have nodes and internodes d. taper dramatically from the base to the apex e. all of the above 15. Leaves of juvenile ivy plants have 3 lobes, while adults have unlobed leaves. This phenomenon is known as a. vegetative reproduction b. compound leaf development c. heterophylly d. mutation e. phyllotaxis II. Short Answers: (4 pts. each) Briefly describe the following (you may use diagrams or tables at any time to help explain): 1. Briefly describe cellulose. Where is it found? How does it function in a plant? 2. Draw and label a plant cell with at least 6 organelles. 3. List 2 types of simple tissues and briefly explain the function of each. Describe where in a vascular plant you would expect to find each. 4. Briefly describe the following meristem types: root and shoot apical meristems; primary meristems; and secondary meristems. 5. Distinguish between simple and complex tissues. 6. What are the defining traits of plants (what makes plants different from members of other kingdoms)? 7. Compare and contrast vessel elements and tracheids. 8. What is plant phyllotaxis? Describe or draw 3 main types. 9. What is nitrogen fixation, and how are plants associated with this process? 10. Distinguish between heartwood and sapwood in terms of age and characteristics. 11. How do you distinguish between a leaf and a leaflet? 12. What is the structure and function of the root cap? Essays (12 pts each) CHOOSE AND ANSWER COMPLETELY 1. Draw a root longitudinal section and label the following parts: root cap, quiescent center, root apical meristem, region of elongation and region of maturation. Describe the tissues in each region. 2. Draw a longitudinal section of a shoot. Label the 3 primary meristems found in most shoots. Draw and label the tissues they ultimately form. Briefly describe the functions of the tissues you have labeled.