Midterm+Multiple+Choice+-+Katie

1. What is commensalism? a. One benefits, one is harmed b. Both benefit c. One benefits, one is unharmed d. None of the above

2. What is the difference between heterotrophic, autotrophic, and chemotrophic?

3. What are bundle scars? a. Where vascular tissue used to enter leaves b. Mark left on the twig where the leaf was attached c. Where an animal destroyed part of the tree d. Both A and B

4. Xylem: a. Carries sap around the tree. b. Looks like a piece of hair. c. Carries water and minerals to the tree. d. None of the above

5. What do plants compete for? a. Nutrients b. Light c. Moisture d. All of the above e. Both A and B