Free Silviculture MCQs with Answers

• A. Injury to trees
• B. Injury to young growth and regeneration
• C. All of the above
• D. Injury to wildlife
• E. Injury to the soil

Explanation: Fire can injure mature trees, destroy regeneration and young growth, degrade soil, and kill or displace wildlife.

• A. Application of water
• B. Application of earth
• C. Beating out
• D. All of the above
• E. Counter-firing

Explanation: Forest fires may be controlled by water, soil or earth, direct beating, and counter-firing, depending on fire intensity, fuel and site…

• A. The growing of forests is a very slow process but constant
• B. Many years to accomplish
• C. If the efforts of the forester are not to be wasted
• D. All of the above
• E. It is necessary that care should be taken to protect the forest from all forms of damage

Explanation: Because forest growth and the forester’s work require many years, protection is necessary to prevent damage from wasting that investment.

• A. Knowledge of the various forms of remedying such damage
• B. Knowledge of suitable methods of preventing or remedying such damage
• C. All of the above
• D. The application of such knowledge to particular cases of damage, with due regard to the cost of the proposed protective operations

Explanation: Effective forest protection requires knowledge of preventive and remedial measures, followed by their economical application to the…

• A. Preventive
• B. Remedial measures
• C. None of these
• D. Both (a) & (b)

Explanation: Forest protection works are divided into preventive measures, which avert damage, and remedial measures, which repair or control damage…

• A. All of the above
• B. Unexpected damage
• C. Where the preventive measures has broken down
• D. Occasional

Explanation: Preventive work is part of routine administration, whereas remedial action is needed after occasional or unexpected damage, or when…

• A. Illicit removal of forest produce from the forest
• B. Encroachments
• C. Irregularities in the management and exploitation of forests
• D. Forest Fires
• E. All of the above

Explanation: Human damage includes illegal removal of produce, encroachment, faulty management or exploitation, and fires caused by human activity.

• A. Protection against man
• B. Protection against animals
• C. All of the above
• D. Protection against injurious climatic factors
• E. Protection against injurious plants

Explanation: Forest protection covers biotic threats from people, animals and injurious plants, as well as abiotic threats such as damaging climatic…

• A. Burning of grass and undergrowth along patches frequented by villagers for easy passage
• B. Burning to facilitate the collection of minor produce
• C. Burning of grass by graziers for the sake of the tender grass, which comes up after a fire
• D. Fires caused by sparks from locomotive engines passing through the forest
• E. All of the above

Explanation: Forest fires may result from deliberate burning for passage or minor produce collection, grazing practices intended to encourage fresh…

• A. Removal of ring of bark to kill
• B. Both (a) & (b)
• C. While species, of thick bark, fluted, stem, xylem remains present inside
• D. None of these

Explanation: Girdling is the removal of a complete ring of bark, which interrupts the phloem and eventually kills the tree while the inner xylem…

• A. Selection
• B. Trees to be felled
• C. All of the above
• D. Improvement felling

Explanation: Thinning in mixed plantations involves selecting trees for removal and may include improvement felling to favour better-quality or more…

• A. Felling of saleable dead trees
• B. Thinning where crowed trees are present
• C. Climber cuttings
• D. All of the above
• E. Climber affected trees

Explanation: Working-plan rules for these forests can cover removal of saleable dead trees, thinning of crowded stands, and cutting climbers or…

• A. Species
• B. Both (a) & (b)
• C. Site quality (S.Q)
• D. None of these

Explanation: Fast-growing species and fertile, productive sites occupy growing space sooner, so they generally require more frequent thinning.

• A. Site quality (S.Q): For good SQ thinning will be heavy but for poor S.Q. It will be of lighter intensity
• B. For hot, dry, weedy site, southern aspect thinning will be of lighter intensity.
• C. All of the above
• D. Objective: For getting timber, heavily thinning carried out and for getting fuel wood, no need or light, thinning is done

Explanation: Thinning intensity is adjusted according to site quality, exposure and management objective.

• A. Faster rate of growth
• B. Rotation will be shorter
• C. None of these
• D. Both (a) & (b)

Explanation: Heck's correction improves the growth response of selected trees by reducing competition, allowing them to reach merchantable size sooner.

• A. Both (a) & (b)
• B. Ordinary thinning is not applied as it deprives of slow growing spp.
• C. It is hardly impossible that mixed plant have same height
• D. None of these

Explanation: Species in a mixed plantation usually differ in height and growth rate, so ordinary thinning may remove slower-growing species simply…

• A. Dominant trees (D)
• B. All of the above
• C. Suppressed (s)
• D. Deed, Moribund (m) and include bent ever and badly leaning trees
• E. Dominated (d)

Explanation: Thinning classes commonly distinguish dominant, dominated and suppressed trees, while also identifying dead, moribund, bent or badly…

• A. Mechanical
• B. Selection
• C. All of the above
• D. Crown
• E. Ordinary/low

Explanation: The principal thinning approaches include mechanical thinning, selection thinning, low or ordinary thinning, and crown thinning.

• A. Sanitation: To protect from pest and diseases
• B. Spacing
• C. All of the above
• D. Removing of destroyed trees for sale

Explanation: Thinning improves stand sanitation, regulates spacing and removes damaged or unwanted trees, which may then be sold.

• A. Good and bad trees mix that their spacing in uneven, so either good trees or trees at equal spacing are maintained
• B. To search out negative characteristic tree (negative approach)
• C. None of these
• D. Both (a) & (b)

Explanation: A stand may contain desirable and undesirable trees at irregular spacing, making it difficult to retain both the best stems and uniform…