Free Silviculture MCQs with Answers

• A. January - March
• B. February - May
• C. November - December
• D. None of these

Explanation: Terminalia arjuna has a comparatively broad seed-ripening period extending from February to May.

• A. January - March
• B. None of these
• C. November - December
• D. March - April

Explanation: Zizyphus mauritiana fruits and seeds usually mature in March and April.

• A. All of the above
• B. Fanning
• C. Floating
• D. Screening

Explanation: Screening, fanning and floating are all used in seed extraction or cleaning: screening separates by size, fanning removes light…

• A. Sometimes the seed has to be stored till sowing time
• B. All of the above
• C. The seed collected in good years must be stored for several years to provide for the lean years
• D. Also many species produce good seed crops only at interval of several years

Explanation: Seed may need storage until sowing, and good seed crops may occur only every few years.

• A. Nurseries fail quite often as the seed collected is rather old rotten or does not have an embryo
• B. There are several methods to test seed germination percent but the most practical is to, to take a few samples from thoroughly mixed heap
• C. Both (a) & (b)
• D. None of these

Explanation: Germination testing is important because old, rotten or embryo-deficient seed can cause nursery failure.

• A. External effects of environment
• B. Internal conditions within the plant itself, i.e. Embryo dormancy or seed coat dormancy
• C. Both (a) & (b)
• D. None of these

Explanation: Dormancy can result from external conditions or internal barriers such as embryo dormancy and an impermeable seed coat.

• A. Mechanical scarification
• B. All of the above
• C. Acid scarification
• D. Socking seeds in water
• E. Cold and hot stratification

Explanation: Seed dormancy may be overcome by scarifying the coat mechanically or with acid, by soaking, or by cold and hot stratification.

• A. The purpose of mechanical scarification is to modify hard
• B. Or impervious seed coats
• C. Both (a) & (b)
• D. None of these

Explanation: Mechanical scarification abrades, cracks or otherwise modifies hard, impermeable seed coats so that water and oxygen can enter.

• A. The purpose of soaking seeds in water is to modify hard seed coats remove inhibitors
• B. And soften seeds to reduce the time of germination
• C. None of these
• D. Both (a) & (b)

Explanation: Water soaking can soften hard seed coverings, leach some germination inhibitors and allow the seed to imbibe water before sowing.

• A. All of the above
• B. To help after ripening of embryo
• C. Moist stratification is done at temperature varying from 0 - 10
• D. To activate dormant embryo

Explanation: Stratification helps overcome dormancy by activating or completing the after-ripening of the embryo; moist cold stratification is commonly…

• A. The purpose of acid scarification is to modify hard
• B. Or impermeable seed coverings
• C. Both (a) & (b)
• D. None of these

Explanation: Acid scarification is used to weaken hard or impermeable seed coverings, allowing water and gases to reach the embryo.

• A. Bed nursery
• B. Pot nursery
• C. None of these
• D. Both (a) & (b)

Explanation: The two broad nursery types are bed nurseries, where seedlings are raised in prepared beds, and pot nurseries, where they are raised in…

• A. Preparation of the area
• B. Sowing
• C. All of the above
• D. Transplanting
• E. Weeding, hoeing and irrigation

Explanation: Bed-nursery establishment proceeds through area preparation, sowing, regular weeding, hoeing and irrigation, followed by transplanting…

• A. Seeds after stratification can be sown directly in polythene tubes
• B. Both (a) & (b)
• C. There are general 18-23 cm long with 5-10 cm diameter when filled with soil.
• D. None of these

Explanation: In a pot nursery, suitably treated seed may be sown directly in polythene tubes, which are commonly about 18–23 cm long and 5–10 cm in…

• A. To find out the growth response of chirpine seeds in different soil mixtures, effect of fertilizer, and suitable type of containers
• B. The best season for sowing the seed; and to find out optimum water regime for quick germination and growth
• C. Both (a) & (b)
• D. None of these

Explanation: Chir-pine nursery trials commonly examine soil mixtures, fertilizers, containers, sowing season and watering regimes.

• A. Both (a) & (b)
• B. Where one-year-old plants are produced for panting out. The root-shoot cutting and two cutting from the proximal end of the stem are made from one year old plants
• C. Cutting is made from one-year-old plants. Preferably stem cutting of 20-25 cm length and finger thickness are used
• D. None of these

Explanation: Hybrid and deltoid poplars are propagated from one-year-old material, commonly using finger-thick cuttings about 20–25 cm long and…

• A. A tending operation done seedling crop involving
• B. Both (a) & (b)
• C. The "removal or cutting back of any sort of weed growth, even woody, i.e. Interfering in growth of plant".
• D. None of these

Explanation: Weeding is a tending operation that removes or cuts back competing weed growth, including woody weeds, so crop plants can grow without…

• A. Felling made in an immature stand for the purpose of improving the growth
• B. Form of the trees that remain, without permanently breaking the canopy
• C. Both (a) & (b)
• D. None of these

Explanation: Thinning means selectively felling trees in an immature stand to improve the growth of the trees retained.

• A. All of the above
• B. Selection of site
• C. Selection of tree species
• D. Cold storage
• E. Nursery raising

Explanation: Forest establishment and regeneration involve raising nursery stock, selecting a suitable site and choosing appropriate tree species.

• A. Both (a) & (b)
• B. It is adaptable to the site, priority may be given to indigenous trees shrubs
• C. It is acceptable and meets the demand of the local people
• D. None of these

Explanation: A timber-producing species or crop should satisfy local demand while also being suited to the site; indigenous trees and shrubs may…