How well do you know your roots?  Or, how good a guesser are you?  Try to define these words by looking at the choices and by defining the root word, then click on your answer.

1. A time line of events...... chlorophyll chronology cryptic credible

2. It makes plants green...... chlorophyll chronology cryptic credible

3. To be believable ...... chlorophyll chronology cryptic credible

4. It's a secret!... chlorophyll chronology cryptic credible

5. A list of books......... dermatologist bibliography bibliophile benefactor

6. Someone who does good things for others.. dermatologist bibliography bibliophile benefactor

7. A doctor who treats the skin...... dermatologist bibliography bibliophile benefactor

8. Someone who loves books....... dermatologist bibliography bibliophile benefactor

9. It joins two clauses...... pseudonym conjunction polygamy panorama

10. Having many wives at the same time...... pseudonym conjunction polygamy panorama

11. A wide view..... pseudonym conjunction polygamy panorama

12. A false name... pseudonym conjunction polygamy panorama

13. A 'foot' doctor.... geriatrics  podiatrist prototype vitality

14. Having life and energy..... geriatrics  podiatrist prototype vitality

15. The first model of an invention.......geriatrics podiatrist prototype vitality

16. A branch of medicine specializing in old age... geriatrics podiatrist prototype vitality

17. The science of life... eulogy genealogy zoology biology

18. Tracing the origin of your family... eulogy genealogy zoology biology

19. Something you might hear at a funeral... eulogy genealogy zoology biology

20. The study of animals... eulogy genealogy zoology biology