I can't be specific without re-watching, but I was surprised at how many answers were accepted that differed from the answer shown on the screen. I suppose they have a pre-determined list of acceptable responses - last name only for people, airplane for jet fighter, etc - but some of them seemed to surprise even the person giving the answer.
I was also shocked that 'aircraft carrier' was a miss.
Same. I know so many of the answer, but come up with them a beat or two later. But I think that over all, taking that extra second to come up with it is better than passing.