Botany 113

Study Guide for Fourth Lecture Exam

Monday,  June 6,  9-9:50


What are some characteristics that are common among rare plants?  What are some threats to their continued existence? 


What is the difference between "endangered" and "threatened"?  Federal vs State designations?  What agencies are responsible for managing and maintaining lists? 

Refer to links on the class web page.


What is the definition of a noxious weed?  How is it different from a regular weed?  What is the significance of the different classifications (A, B, C)?  Where are you most likely to find noxious weeds?  What is an exotic invasive pest plant?  What are some features that make them so invasive?  How did they get here?  How do they differ from noxious weeds?  Some of these issues are discussed in your field guide p. 22-24.  More links available on the class web page.  Review the stories of plants from lecture and from species list 9. 


Be able to give common names for several edible plants in our region.  Be sure you know example species from each of the categories of edible plant parts (shoots, inner bark and cambium, fruits, and root and other underground structures, as well as how the plants from our species lists were used.  Refer to the Ethnobotany section in your field guide, p. 24-26.  Also be familiar with methods discussed in class as those used by Northwest Coast peoples "managing" wild plants for food. 


Why do plants make toxins?  What is the difference between primary and secondary plant chemicals?  Which is more likely to be toxic?  What are different ways in which plants can be poisonous to people and other animals? How can plants we often eat as food be poisonous?  What are some examples?  Tannins and alkaloids are the two major groups discussed.  What commercial products are made from plants containing various forms of these substances?  (Examples included things we use as beverages, legal and illegal drugs, leather processing, pupil dilators…)  What are some defensive chemicals made by plants that are neither alkaloids nor tannins? 


Be familiar with the poisonous plants discussed in class.  Be able to give examples from our species lists of native and introduced plants with poisonous parts.