Ethiopia · Ministry of Education · professional · unverified source
Unverified.
Unverified: only the ministry's exam platform was confirmed. Whether forestry has its own exit-exam blueprint was not checked.
Official source: https://exam.ethernet.edu.et/
Original questions written to this exam's published syllabus and pattern. Not past papers.
1. What minimum area and tree height does the FAO definition of forest require?
A. More than 0.5 ha and trees higher than 5 m
The FRA thresholds are 0.5 ha, 5 m height and 10% canopy cover; countries may use other thresholds nationally.
Introduction to Forestry & the World's Forests · Definitions of forest, forestry and forest land (FAO Forest Resources Assessment definitions)
2. A 100 cm³ core of soil weighs 120 g after oven-drying. What is its bulk density?
C. 1.20 g cm⁻³
BD = dry mass / total volume = 120/100 = 1.20 g cm⁻³. 0.83 inverts the ratio; 2.65 is particle density.
Forest Soils & Soil Conservation · Physical properties: texture, structure, bulk density, water holding
3. Tree heights are 12, 15, 18, 15 and 20 m. What is the sample standard deviation?
A. 3.08 m
Mean 16; squared deviations sum to 38; s² = 38/4 = 9.5; s = 3.08 m. Dividing by n gives 2.76 m; 9.5 is the variance.
Biometry, Statistics & Computing for Forestry · Descriptive statistics, frequency distributions and diameter distributions
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