Biology ยท Environmental Studies
Forestry and Plant Sciences
985 Questions
Review important biological concepts with these questions on forestry and plant sciences. The topics include non-timber forest products, timber wood types, lichen growth, and tree structures. This content is ideal for students preparing for agriculture and biology exams.
Industrial wood productionLichen growth patternsNon-timber forest productsPapilionaceous timber woodsTree crown typesFast growing trees
Forestry and Plant Sciences Questions
B
Correct answer
Explanation
Mass scale planting of trees is called afforestation or reforestation, whereas deforestation is the clearing or removal of forests.
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Topmost layer
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Understorey
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Bottom layer
C
Correct answer
Explanation
In the vertical structure of a forest, herbs and grasses occupy the lowest level, known as the forest floor or bottom layer.
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Gum
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Plywood
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Sealing wax
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Kerosene
D
Correct answer
Explanation
Gum, plywood, and sealing wax are all derived from trees or forest resources, whereas kerosene is a fossil fuel extracted from the earth.
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Green lungs
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living organisms
A
Correct answer
Explanation
Forests are often called the green lungs of the Earth because they exchange gases, absorbing carbon dioxide and releasing oxygen.
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forest floor
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Canopy
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Under storey
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herb layer
B
Correct answer
Explanation
The canopy is the upper layer of the forest formed by the mature tree crowns, which acts as the topmost layer of the forest ecosystem.
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canopy
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understorey
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forest floor
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none of the above
B
Correct answer
Explanation
The understorey is the layer of vegetation below the main canopy, formed by smaller trees and shrubs.
C
Correct answer
Explanation
The crown of a tree is the top portion that includes the branches and leaves above the main trunk.
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1.5 billion trees.
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500 billion trees.
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1 trillion trees.
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2 trillion trees.
D
Correct answer
Explanation
Based on current environmental statistics, the annual consumption of trees for paper and wood products in the U.S. is estimated to be in the range of 2 trillion trees globally when considering total human consumption.
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Himalayan Oak and Rhododendron
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Teak and Sal
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Babul and Mexican kikar
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None of the above
A
Correct answer
Explanation
In the Himalayas, the natural forests of Oak and Rhododendron were cleared to make way for Chir Pine plantations, which were commercially valuable but ecologically less diverse.
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Tree Farms
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Virgin Forests
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Native Forests
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Hedgerows
A
Correct answer
Explanation
Tree farms are managed areas where trees are planted, grown, and harvested systematically, similar to agricultural crops.
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Removing all trees from an area of land
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Cutting and removing only middle aged or mature trees
B
Correct answer
Explanation
Selective cutting involves harvesting specific trees, such as mature or diseased ones, while leaving younger trees to continue growing and maintaining the forest structure.
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Virgin Forest
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Native Forest
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Tree Farm
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Wilderness
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Marginal Land
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Hedgerows
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Virgin Forests
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Greenbelts
B
Correct answer
Explanation
Hedgerows are rows of shrubs or trees planted to act as boundaries, windbreaks, and habitats for wildlife in agricultural landscapes.
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Rangeland
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Forest Land
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Cropland
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Parks and Preserves
B
Correct answer
Explanation
Forest land is defined as land used for the production of timber, wildlife, and other natural resources.
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Virgin Forest
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Native Forest
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Tree Farm
A
Correct answer
Explanation
A virgin forest, or primary forest, is one that has remained undisturbed by human activity, specifically logging. Other terms like tree farm refer to managed, replanted forests.