Ace the Forest Resources Management Exam 2026 – Cultivate Success and Conquer Practice Test 1!

TPA measures how densely trees occupy a given area, calculated simply as the total number of trees divided by the area in acres. It’s a density metric that ignores tree size or age and focuses on how many trees are present per acre.

To get the number in the problem, you take the total trees counted and divide by the number of acres surveyed. The result matches 154, so the stand’s density is 154 trees per acre. For context, if you had 308 trees over 2 acres, you’d get 308/2 = 154 TPA. The other numerical options would come from different total counts or different surveyed areas (for example, 240 trees over 2 acres would yield 120 TPA; 360 trees over 2 acres would yield 180 TPA; 400 trees over 2 acres would yield 200 TPA). Since the stand’s measured data produce 154 TPA, that is the correct density.