What: Describe the parts of a plant and how it helps the plant (or the job that it does) How: a of a plant. the name of each part of the plant. Use the or to tell about the name and function of each part of the plant. If you want some more information remember to access Brain Pop. The username is meliskl and the password is libiskl. *** TIP - Use the vocabulary cards to make you sound like a science expert! *** Why: I can explain how different parts of a plant system are related.