Free Silviculture MCQs with Answers

• A. Both (a) & (b)
• B. It essentially covers operations on the crop itself and on the competing vegetation
• C. As operations carried out for the benefit of a forest crop at any stage of its life between the seeding and mature stages
• D. None of these

Explanation: Tending includes operations performed from the seedling stage to maturity to benefit the crop.

• A. All of the above
• B. A tree crop requires to be protected from pests and diseases
• C. The individual trees must have adequate room to grow
• D. If any infected trees are present
• E. For continuous healthy development

Explanation: Tending maintains healthy continuous development by controlling pests and diseases and giving desirable trees sufficient growing space.

• A. As a tending operation done in a seedling crop involving the removal
• B. Cutting back of any sort of weed growth, even woody
• C. All of the above
• D. It merges with cleaning as the seedling grow into saplings
• E. That is interfering with then growth of the corp.

Explanation: Weeding is an early-stage tending operation that removes or cuts back herbaceous and woody competitors interfering with seedlings.

• A. That denotes the removal of all plants competing with the crop species in seedling stages regardless of whether their crowns are above, beside
• B. Or below those of the desirable trees
• C. None of these
• D. Both (a) & (b)

Explanation: Weeding removes competing plants during the seedling stage whether they overtop the crop, grow beside it, or remain beneath its crowns.

• A. All of the above
• B. With the first thinning, involving the removal
• C. Cutting back of all inferior growth, climbers
• D. As a tending operation done in the sapling crop, particularly just before

Explanation: Cleaning is carried out mainly in the sapling crop before the first thinning and removes inferior growth, including unwanted climbers.

• 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…

• 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…

• 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…

• 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…

• 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…

• 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…

• 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…

• 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…

• 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.

• 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…

• 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…

• 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…

• 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…

• 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…

• 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.