Tests I have written for invitationals. Personally, I like to stray a bit from the rules for the following reason: it helps identify the teams who have really gone out of their way to learn stuff about both coral reefs and estuaries (especially estuaries since "technically" you aren't required to really know any scientific names for organisms living there).Just out of curiosity, in what context?I have.
For example, on one invitational test, I asked what genus contains the symbiotic zooxanthallae. Technically, that's not allowed to be asked. But really, we're talking about by far the most important genus in coral reefs. Anyone who has done more than the most cursory study of reefs should have run across this genus (Symbiodinium). If not, all I can say is: you need to study more. This really isn't that hard to find. Get a good coral reef book. If you use wikipedia on zooxanthallae, it redirects you to this genus.
Same thing with the estuaries. I will check to see if you've done your research on mangroves, on cordgrass, etc. If you can't pick out their genus names from a multiple choice question, to me it seems likely that you have not really studied them fully.
Summary of my rant: When I write tests, I try and differentiate the teams that treat the rules as a boundary, and those who use it as a jumping-off point into the REAL marine biology, oceanography, etc. That's what the 5% of questions that I write that are outside the rules are for.