All Free Forestry MCQs with Answers

• A. All of the above
• B. Geology helps to suggest forest trees
• C. Anchorage effect
• D. Root wedging
• E. Soil formation

Explanation: Geology affects forestry through soil formation and parent material, helps identify suitable tree species, and influences root anchorage…

• A. The partially decayed
• B. All of the above
• C. Animal residues
• D. Resynthesized plant

Explanation: Soil organic matter consists of partly decomposed plant and animal residues as well as compounds resynthesized during decomposition by…

• A. Primary
• B. Secondary
• C. Both (a) & (b)
• D. None of these

Explanation: Organic matter has primary sources, such as fresh plant and animal residues, and secondary sources, such as materials formed after…

• A. Provide N.P.S.
• B. Increase water holding capacity of soil
• C. Reduce impact of falling rain drops
• D. All of the above
• E. Source of energy for micro-organisms

Explanation: Organic matter supplies nutrients including nitrogen, phosphorus and sulfur, improves water-holding capacity, protects soil from raindrop…

• A. Desert areas
• B. Hilly areas
• C. Plains
• D. Riverine areas

Explanation: Terraces divide a slope into shorter, nearly level sections, slowing runoff and trapping soil, so they are especially effective in hilly…

• A. Irrigated agriculture
• B. Overgrazing
• C. Tourism
• D. Developmental activities

Explanation: Overgrazing removes protective vegetation and exposes soil to wind and water erosion, making it a major driver of desertification.

• A. Erosion of surface soil
• B. Frequent cyclones
• C. Rain fall
• D. Frequent landslides

Explanation: Deforestation can reduce evapotranspiration and disrupt local moisture cycling, which may lower rainfall, while it generally increases…

• A. Cotton
• B. Maize
• C. Green gram
• D. Pigeon pea

Explanation: Pigeon pea develops a substantial root system and provides relatively good ground cover, helping bind soil and reduce runoff erosion.

• A. Fast running rivers
• B. Heavy rains
• C. Wind
• D. Glaciers

Explanation: Sheet erosion is the fairly uniform removal of a thin layer of topsoil by unchannelled surface runoff, commonly produced by heavy…

• A. Prevention of spread of desert
• B. To check soil erosion by wind and rains
• C. All of these
• D. To check soil erosion by afforestation

Explanation: Soil conservation aims to control erosion and prevent land degradation, including desertification.

• A. Wind screens
• B. Low rainfall
• C. Restricted human activity
• D. Good plant covers

Explanation: Dense and healthy plant cover protects soil from raindrop impact, slows surface runoff, and reduces wind erosion.

• A. Clay and humus
• B. Sand and calcium
• C. Gravel and sand
• D. Silt and earthworms

Explanation: Dark soil usually contains abundant humus, and clay helps retain water and plant nutrients through its high surface area.

• A. Goat and grazing animals
• B. Local resident
• C. Low rainfall
• D. Unfertility of soil

Explanation: Desert areas receive very little rainfall, so seedlings struggle to establish and vegetation cannot develop without irrigation or special…

• A. Rich in plant nutrients
• B. Unaltered in plant nutrients
• C. Devoid of plant nutrients
• D. All of these

Explanation: Erosion commonly removes nutrient-rich topsoil and leaves a much less fertile soil behind.

• A. World environment day
• B. Darwin's birthday
• C. World health and hygiene day
• D. World population day

Explanation: World Environment Day is observed annually on 5 June to promote awareness and action on environmental problems.

• A. Preventing soil erosion
• B. Developing a vegetational cover
• C. Preventing overgrazing
• D. Introducing agriculture

Explanation: A vegetational cover stabilizes mine spoil and exposed soil, reduces erosion, and gradually restores habitat and nutrient cycling.

• A. Reducing over grazing
• B. Planting proper plants
• C. Making dams
• D. All of those

Explanation: Overgrazing exposes soil, vegetation protects it, and dams or similar structures slow runoff.

• A. Afforestation
• B. Heavy rains
• C. Deforestation
• D. Over grazing

Explanation: Afforestation binds soil with roots and reduces the force of raindrops and surface runoff.

• A. Upper layers of soil are loosened and are eroded
• B. All of the above
• C. Lower compact layers make root penetration difficult
• D. Lower layers are made more compact and root respiration is interfered with

Explanation: Heavy, repeated grazing loosens exposed upper soil, compacts deeper layers and restricts root penetration and respiration.

• A. Denudation
• B. Deforestation
• C. Afforestation
• D. Overgrazing

Explanation: Afforestation protects the soil surface and reinforces it with roots, reducing runoff and wind removal.