If you click on the screenshot below, you can go to a vocabulary test, which is a multiple choice test asking you. . ., well, I won’t give a spoiler. This was all over Facebook. I’m a sucker for this stuff, and, as my score says below, I did pretty well, though I invariably suck on biology tests. Anyway, see how you stack up against a sample that’s not defined!
h/t: Su Gould