All Free Forestry MCQs with Answers
Every Forestry question in the bank, across all chapters, each with the correct answer and a written explanation. Free and unlimited, with no account needed.
1,681 questions · page 60 of 85
- A. Physical
- B. Silvicultural
- C. Technical
- D. Rotation of the greatest volume production
- E. All of the above
Explanation: Rotation may be defined by physical maturity, silvicultural maturity, technical requirements, or maximum volume production.
Correct answer: All of the above- A. The long term estimate of total growth used in forecasting may turnout too higher or too low
- B. Both (a) & (b)
- C. There may be short-term fluctuations in increment because of climate or treatment effects
- D. None of these
Explanation: Planned yield can depart from the forecast when the estimated long-term growth is too high or low, and when short-term increment changes…
Correct answer: Both (a) & (b)- A. Which are derived from gymnosperms such as pines, evergreen, needle like leaves seeds in cones
- B. Hardwoods are those derived from angiosperms such as oak, ash, popular, with broad leaves seed enclosed bearing flowers
- C. Wood responsible for sap conduction is termed as sap wood
- D. All of the above
- E. As the wood increases in diameter, cells to the inside are block. This portion of wood is known as heart wood
Explanation: Softwoods generally come from gymnosperms and hardwoods from angiosperms; sapwood conducts sap, while the older, blocked inner wood…
Correct answer: All of the above- A. Knots
- B. Reaction wood or abnormal wood
- C. Brashness
- D. Grains
- E. All of the above
Explanation: Standing-tree defects include knots, reaction or abnormal wood, brashness, and irregular grain.
Correct answer: All of the above1185. Knots means:
- A. Both (a) & (b)
- B. Dead knots: When branch wood tissues are dead and not in continuation with main stem tissues
- C. Live knots: v Tissues are continuous stem tissues. These are called "Tight-knots".
- D. None of these
Explanation: A live or tight knot remains connected with the stem's tissues, whereas a dead knot is formed when branch wood is no longer continuous…
Correct answer: Both (a) & (b)- A. Compression wood (CW)
- B. Tension wood (TW)
- C. Both (a) & (b)
- D. None of these
Explanation: Reaction wood is abnormal wood formed in response to leaning or mechanical stress: compression wood develops mainly in conifers, while…
Correct answer: Both (a) & (b)- A. To Evarts and Mason (106) it is due to gravity
- B. Metzger (1908) says it is due to tension and compression
- C. Wersking and Baily, due to (1942) increase or decrease in plant hormones
- D. All of the above
- E. Philips says (1940), it is due to wind
Explanation: Proposed explanations for compression and tension wood include gravitational or positional effects, mechanical tension and compression…
Correct answer: All of the above1188. What is increment?
- A. All of the above
- B. Value of individual tree or crops during a given period
- C. Utilizable portions of total woody growth goes on increasing
- D. The increase in girth, diameter, basal area, height, volume, quality
Explanation: Increment is the increase in a tree or crop's dimensions, volume, quality, or value during a specified period.
Correct answer: All of the above- A. Current annual increment (CAI)
- B. Both (a) & (b)
- C. Mean annual increment (MAI)
- D. None of these
Explanation: The change in volume increment with age is studied through both current annual increment and mean annual increment.
Correct answer: Both (a) & (b)- A. All of the above
- B. Checking silvicultural or management practices
- C. It also helps in finding rotation
- D. Decision about optimum level of residual growing stock. It depends on rotation
- E. Checking correctness of past management
Explanation: Increment data help evaluate past management, assess silvicultural practices, determine rotation, and decide the appropriate residual…
Correct answer: All of the above- A. From yield table
- B. All of the above
- C. Increment determination by control method
- D. Increment by continuous forest inventory (CFI)
- E. Estimation of movement rations from average diameter growth by diameter class
Explanation: Increment can be obtained through yield tables, movement-ratio calculations, the control method, and continuous forest inventory.
Correct answer: All of the above- A. Both (a) & (b)
- B. Under stocked stands tend to approach fully stocked stands with increase in age, though more rapid growth than the latter
- C. Future increment of even aged crop can be from valid yield table
- D. None of these
Explanation: A valid yield table provides the expected future increment of an even-aged crop.
Correct answer: Both (a) & (b)- A. Tree diameters include in a dia class in the present stand tables are distributed uniformly, about the class centre
- B. Both (a) & (b)
- C. Movement ration: Proportion of trees which will move onto next higher classes
- D. None of these
Explanation: The movement-ratio method assumes that trees in a diameter class are distributed around its midpoint, then estimates the proportion moving…
Correct answer: Both (a) & (b)- A. In Swiss, forest are managed intensively under selection system
- B. Each compartment is enumerated 100% at 5-6 years intervals
- C. Records are kept by compartments of all mortality and all cut trees in interval between two successive counts
- D. All of the above
Explanation: Under the control method, compartments are periodically enumerated and all cutting and mortality between successive inventories are…
Correct answer: All of the above- A. Used in USA and Canada
- B. All of the above
- C. Sometime metallic rod is fixed in centre
- D. Measured after 5 or 10 years
- E. Large area under first, they can't adopt other method
Explanation: Continuous forest inventory uses permanent sample plots, often marked by a central metal pin or rod, which are remeasured at intervals…
Correct answer: All of the above- A. Periodic physical/mapping surveys
- B. Both (a) & (b)
- C. Implementation of a programme for the improvement of statistics relating to forests and wildlife which includes a remote sensing laboratory and Geographical Information System (GIS)
- D. None of these
Explanation: Planning needs both physical and mapping surveys and improved forest and wildlife statistics supported by remote sensing and GIS.
Correct answer: Both (a) & (b)- A. Basal area
- B. Stem timber
- C. Total smallwood
- D. All of the above
- E. Total stem timber and smallwood
Explanation: Final yield may be assessed through stand basal area and the volume of stem timber and smallwood, with total stem timber and smallwood…
Correct answer: All of the above- A. All of the above
- B. Main crop
- C. Thinning
- D. Final yield
- E. Age (5, 10, 15, 20 or 25 years)
Explanation: A yield table records stand age and production details for different site qualities, including the main crop, thinning yields and final…
Correct answer: All of the above- A. Average diameter
- B. All of the above
- C. Total basal area
- D. Number of trees
- E. Average height
Explanation: A yield table records the principal stand variables at successive ages and site qualities, including mean diameter, mean height, basal…
Correct answer: All of the above- A. Are available for a species
- B. All of the above
- C. Not these tables are directly applicable in a given locality or to a given coupe
- D. The point which is first to be decided is whether
Explanation: General volume tables are prepared for a species, but their direct use in a particular locality, compartment or coupe must first be…
Correct answer: All of the above