I have collected data on the frequency of invertebrates on 13 paired plants (paired based on similar sizes). 1 plant from each pair was covered and the other was uncovered (i.e. 2 conditions). I'm confused as to what statistical test is appropriate for such data. Since I am not measuring the same plants for both conditions, I assume paired tests would not work. Chi-square would not work as the plants are paired, and the DV (frequency) is not continuous so ANOVA would be unsuitable. Is there any such test that exists for this kind of data?