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 69 of 85
- A. There is no need to eliminate any plant that is not going to suppress, endanger
- B. Or hamper the growth of a distinctly desirable member of the new stand
- C. Both (a) & (b)
- D. None of these
Explanation: Vegetation is removed selectively, not indiscriminately: plants are eliminated when they suppress, endanger, or hamper a distinctly…
Correct answer: Both (a) & (b)1362. Climber control is:
- A. Are a great menace to young regeneration
- B. Must be closely watched
- C. The course of a month or two
- D. All of the above
- E. They may pull over the saplings, break the leading shoots
Explanation: Climbers threaten young regeneration by pulling over saplings and breaking their leading shoots, so they require close and repeated…
Correct answer: All of the above- A. Both (a) & (b)
- B. Self-pruning
- C. Natural
- D. None of these
Explanation: When branches die and are eliminated through environmental influences such as shading, wind, disease, or competition, the process is…
Correct answer: Both (a) & (b)- A. Killing of the branches
- B. All of the above
- C. Occlusion or healing over of the branch stub
- D. Shedding of the dead branches
Explanation: Natural pruning proceeds in three stages: branches are first killed, the dead branches are shed, and the resulting stub is gradually…
Correct answer: All of the above1365. Artificial pruning is:
- A. The production of clear material on rotations shorter than that would be required with natural pruning
- B. The necessary period of growth after treatment is rather long, so the practice ordinarily must be coupled with thinning to stimulate diameter growth
- C. Both (a) & (b)
- D. None of these
Explanation: Artificial pruning produces clear bole material sooner than natural pruning, but the tree needs a long period of growth afterward and may…
Correct answer: Both (a) & (b)- A. Both (a) & (b)
- B. Careless pruning can, however, cause injury to the bole, leaving wounds extending through the bark into the cambium and even to the wood
- C. The contrary, properly conducted pruning is not harmful to the tree
- D. None of these
Explanation: Proper pruning is generally harmless when cuts are correctly placed and made with suitable tools, whereas careless pruning can wound the…
Correct answer: Both (a) & (b)- A. Unnecessary haste
- B. All of the above
- C. Pruning during the growing season when the bark is loose
- D. Use of improper tools
Explanation: Pruning injuries commonly result from rushing the work, using unsuitable tools, or operating during periods when the bark is loose and…
Correct answer: All of the above- A. Pruning trees that are growing very slowly
- B. All of the above
- C. Eliminating too much of the live crown
- D. Committing similar errors of judgment
- E. Removing large branches
Explanation: Pruning slow-growing trees, removing excessively large branches, or taking away too much live crown can reduce growth and increase injury…
Correct answer: All of the above- A. Choice of species
- B. Choice of stand and site
- C. All of the above
- D. Number and characteristics of tree to be pruned
- E. Growth rate, size and age of tree to be pruned
Explanation: The profitability of pruning depends on species, stand and site quality, tree growth and age, and the number and traits of trees selected.
Correct answer: All of the above- A. All of the above
- B. Mortality
- C. Number of years remaining before harvest
- D. Interest rate at which pruning cost is compounded
- E. Initial cost
Explanation: The financial evaluation of pruning includes its initial cost, possible mortality, the time until harvest, and the interest rate used to…
Correct answer: All of the above1371. Thinnings is:
- A. A felling made in an immature stand fox the purpose of improving the growth and form of the trees that remain, without permanently breaking the canopy
- B. Cutting made in immature stands in order to stimulate the growth of the trees that remain and to increase the total yield of useful material from the stand are termed thinnings
- C. Both (a) & (b)
- D. None of these
Explanation: Thinning removes selected trees from an immature stand to improve the growth and form of the remainder while maintaining the stand's…
Correct answer: Both (a) & (b)- A. To redistribute the growth potential of the stand to optimum advantage
- B. To utilize all the merchantable material produced by the stand during the rotation
- C. None of these
- D. Both (a) & (b)
Explanation: Thinning redistributes the stand's available growing space and resources to better trees, while the removed merchantable material…
Correct answer: Both (a) & (b)- A. Dominant trees (d)
- B. Suppressed trees (s)
- C. Dead and moribund trees (m)
- D. All of the above
- E. Diseased trees (k)
Explanation: The standard classification recognises dominant, suppressed, dead or moribund, and diseased trees, conventionally represented by d, s, m…
Correct answer: All of the above- A. Predominant trees comprising all the largest trees which determine the general top level of the canopy
- B. All of the above
- C. Trees with forked leader and similar defects
- D. Codominant trees which fall short of this, averaging about 5/6th of the height of predominant
Explanation: Dominant trees form the upper canopy with free leaders and include predominant and codominant trees; dominant trees with forked leaders or…
Correct answer: All of the above1375. Dominated trees (d) is:
- A. Which do not form part of the upper most leaf canopy
- B. But the leading shoots of which are not definitely overtopped by the neighbouring trees
- C. Both (a) & (b)
- D. None of these
Explanation: Dominated trees lie below the uppermost canopy, but their leaders are not completely overtopped by neighbouring trees.
Correct answer: Both (a) & (b)1376. Suppressed trees (S) is:
- A. Which reach only about half to 5/8th of the height of the best trees with their leading shoots definitely overtopped by their neighbours
- B. Al least shaded on all sides by the cm
- C. A small tree of height typical of suppressed trees standing with its leader free in a chance gap should not be classed as D or D
- D. All of the above
Explanation: Suppressed trees are much shorter, commonly about one-half to five-eighths the height of the best trees, and are overtopped and heavily…
Correct answer: All of the above- A. Both (a) & (b)
- B. Badly leaning trees usually of the whip type
- C. Bent over
- D. None of these
Explanation: Dead and moribund classes include trees that are bent over or badly leaning, particularly weak whip-like trees.
Correct answer: Both (a) & (b)- A. Dominant
- B. Dominated and suppressed
- C. Both (a) & (b)
- D. None of these
Explanation: Disease can affect trees in any crown class, including dominant, dominated, and suppressed trees, when infection seriously reduces growth…
Correct answer: Both (a) & (b)- A. Low thinning or ordinary thinning
- B. All of the above
- C. Selection thinning
- D. Mechanical thinning
- E. Crown thinnings or high thinning
Explanation: The recognised thinning methods include low or ordinary thinning, crown or high thinning, selection thinning, and mechanical thinning.
Correct answer: All of the above- A. Light Thinning (A-Grade)
- B. Moderate Thinning (B-Grade)
- C. Heavy Thinning (C-Grade)
- D. Very Heavy Thinning (D-Grade)
- E. All of the above
Explanation: Ordinary thinning is commonly graded by intensity as light (A), moderate (B), heavy (C), and very heavy (D).
Correct answer: All of the above