As I said previously, I grade ID questions on the familiar 4-point scale, with half-points. I give some credit for incorrect identifications — when you identify the wrong thing — if you actually identify that thing reasonably well. Your pop quiz grades for the semester will be handled much like the tests: I total up everyone’s scores and take the highest as 100%.
Also, I hand back pop quizzes when I have them graded — and I’ll try my best to make sure that’s the next class — but if you’re not there when I hand them back, I’ll just hold onto them until next time I have something to hand back. If you missed my handing them out, feel free to ask me for them before or after class.