Forest Biometrics MCQs January 8, 2026August 19, 2024 by u930973931_answers 20 min Score: 0 Attempted: 0/20 Subscribe 1. What does forest biometrics primarily focus on? (A) Soil types (B) Wildlife behavior (C) Tree measurements and growth (D) Climate change 2. Which metric is commonly used to measure the diameter of a tree? (A) Diameter at Breast Height (DBH) (B) Tree Height Index (THI) (C) Canopy Cover Ratio (CCR) (D) Basal Area (BA) 3. What is the primary purpose of measuring tree height in forest biometrics? (A) To assess soil fertility (B) To estimate timber volume (C) To monitor wildlife populations (D) To track forest fires 4. Which formula is used to calculate the basal area of a tree? (A) Height × DBH (B) π × (DBH/2)² (C) DBH × Height (D) π × DBH × Height 5. What does ‘stand density’ refer to in forest biometrics? (A) The total volume of timber in a stand (B) The height of the tallest tree in a stand (C) The number of trees per unit area (D) The average age of trees in a stand 6. What is the purpose of a forest inventory? (A) To measure tree growth and forest resources (B) To assess soil health (C) To evaluate wildlife habitats (D) To monitor forest fires 7. Which method is commonly used to estimate the volume of timber in a tree? (A) Diameter measurement only (B) Volume tables (C) Height measurement only (D) Soil analysis 8. What does the term ‘height-diameter ratio’ refer to? (A) The ratio of the height to the diameter at breast height (B) The ratio of tree height to the basal area (C) The ratio of diameter to the canopy cover (D) The ratio of tree height to the total volume 9. What is ‘site index’ used for in forest biometrics? (A) To measure soil fertility (B) To calculate timber yield (C) To determine tree age (D) To estimate the potential height growth of trees 10. Which term describes the average age of trees in a forest stand? (A) Stand age (B) Tree age (C) Growth index (D) Forest maturity 11. What is the primary tool used to measure tree height? (A) Caliper (B) Clinometer (C) Increment borer (D) Soil probe 12. Which measurement is essential for calculating timber volume using Smalian’s formula? (A) DBH and merchantable height (B) Basal area and height (C) Diameter and height (D) Canopy cover and soil moisture 13. What does ‘merchantable height’ refer to in forest biometrics? (A) The height of the tree that can be used for commercial timber (B) The total height of the tree (C) The height of the tree’s canopy (D) The height up to the first branch 14. What is the main purpose of a forest growth model? (A) To measure soil moisture levels (B) To predict future tree growth and yield (C) To assess wildlife populations (D) To monitor air quality 15. Which term describes the spatial arrangement of trees in a forest stand? (A) Stand structure (B) Tree density (C) Tree spacing (D) Canopy cover 16. What is the main use of an increment borer in forest biometrics? (A) To measure tree height (B) To calculate basal area (C) To assess tree age and growth rate (D) To evaluate soil quality 17. What does ‘diameter growth rate’ measure in forest biometrics? (A) The increase in tree height over time (B) The total volume of timber produced (C) The change in diameter over a specific period (D) The rate of soil erosion 18. Which formula is commonly used to estimate the volume of a tree? (A) 0.5 × π × (DBH/2)² × Height (B) 0.5 × DBH² × Height (C) π × Height² / DBH (D) π × (DBH/2)² × Height 19. What is the purpose of a ‘height-diameter equation’ in forest biometrics? (A) To determine soil quality (B) To calculate tree age (C) To measure canopy cover (D) To estimate tree height based on diameter 20. Which term refers to the amount of wood or timber that a tree can produce? (A) Timber yield (B) Stand density (C) Basal area (D) Tree volume