Environmental Studies · Geography

Deforestation and Land Degradation

2,532 Questions

Deforestation and land degradation address the environmental impacts of human activities on natural ecosystems. Key areas include soil erosion, forest fires, and the consequences of overgrazing. These subjects frequently appear in the geography and environmental science sections of competitive exams.

Causes of deforestationForest fires consequencesSoil erosion factorsDesertification impactsAgroforestry benefitsReforestation advantages

Deforestation and Land Degradation Questions

Multiple choice zoology biodiversity and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity basis of classification in animals basis of the classification of animals criteria for animal classification

Genetic erosion is

  1. Deforestation

  2. Shifting cultivation

  3. Adopting genetically uniform varieties

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Genetic erosion is a process, whereby an already limited gene pool of an endangered species of plant or animal diminishes even more when individuals from the surviving population die off without getting a chance to meet and breed with others in their endangered low population. The term is sometimes used in a narrow sense, such as when describing the loss of particular alleles or genes, as well as being used more broadly, as when referring to the loss of varieties or even whole species.
Genetic erosion occurs because each individual organism has many unique genes which get lost when it dies without getting a chance to breed. Low genetic diversity in a population of wild animals and plants leads to a further diminishing gene pool inbreeding and a weakening immune system can then "fast track" that species towards eventual extinction.

Multiple choice history impact of colonisation in india deforestation and rise of commercial forestry impact of colonisation on forests forest society and colonialism

Which of the following was the reason for forests disappearing near railway tracks?

  1. Wood was used to make railway sleepers.

  2. 'Scorched earth' policy of imperial troops

  3. Indiscriminate exploitation by tribals

  4. Indiscriminate cutting of trees by contractors
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

As the railway tracks spread through India, a larger and larger number of trees were felled. The government gave out contracts to individuals to supply the required quantities. These contractors began cutting trees indiscriminately. Forests around the railway tracks fast started disappearing.

Multiple choice geography indian natural disasters disasters - case studies major hazards in india and prevention tsunami and floods man made disaster

Which of the following can effectively prevent coastal erosion?

  1. Construction of buildings along the coast

  2. Sand mining

  3. Growing mangrove forests along the coast

  4. Prohibiting human activities along the coast
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mangrove forests have complex root systems that stabilize shoreline sediments, dissipate wave energy, and trap coastal soils, thereby effectively preventing coastal erosion.

Multiple choice evs mud and stones importance of soil in agriculture soil - formation, profile and properties soil as a natural resource

When large patches of forests are being cleared for cultivation of crops, the environmental impact of such a practice would lead to______

  1. Soil erosion

  2. Soil conservation

  3. Soil pollution

  4. Soil fertility
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

 Deforestation is a direct cause of the erosion happening in tropical rain forests. Once plant cover is gone there are no roots to hold the soil in place during heavy tropical rains, which then wash away the topsoil and the nutrients necessary to regenerate future vegetation.

Multiple choice adaptations - european woodland and african grassland adapting to a habit plant adaptations adaptations to different ecosystems biology

What is reason of African desert expanding?

  1. Climate change and Human Activities

  2. Deforestation

  3. Over cultivation

  4. Exploitation of resources
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The expansion of deserts, or desertification, is primarily driven by a combination of climate change and unsustainable human activities such as overgrazing and deforestation.

Multiple choice

How can deforestation cause drought in surrounding areas?

  1. hot temperatures = no condensation

  2. less snow = less runoff = less groundwater

  3. no trees = no soil = no groundwater

  4. no transpiration = less evaporation = less rain
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Trees release water vapor into the atmosphere through transpiration. When forests are cleared, this moisture contribution decreases, leading to reduced cloud formation and rainfall in the region.

Multiple choice commercial studies forests: our lifeline afforestation deforestation and its effect deforestation

Extinction of flora and fauna can be caused by 

  1. Aforestation

  2. Deforestation

  3. Reforestation

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
1. Deforestation is the permanent destruction of forests in order to make the land available for other uses like farms, ranches, or urban. so that time of flora and fauna can face extinction. 
2. Reforestation is the process of replanting an area with trees.
3. Afforestation is the process of adding trees to an area.
So, the answer is "deforestation".
Multiple choice evs - i forests: our lifeline afforestation deforestation and its effect deforestation

___________ is an important factor that aggravates the effect of drought

  1. Deforestation

  2. Soil Erosion

  3. Floods

  4. Acid Rain
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Deforestation removes the vegetation cover that helps retain soil moisture and regulate the water cycle. Without trees, the land becomes more susceptible to drying out, which significantly worsens the impact of drought conditions.

Multiple choice evs - i forests: our lifeline afforestation deforestation and its effect deforestation

Which of the following defines the effect of deforestation on environment?

  1. Level of CO$ _2$ in the atmosphere will rise

  2. Global warming

  3. Both A and B

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The deforestation greatly effects on the environment. Plants absorb CO$ _2$ from the atmosphere to perform photosynthesis. If plants are destroyed, then the level of CO$ _2$ in the atmosphere will rise. As a result, CO$ _2$ will trap more heat radiations, thereby adding to global warming. An increase in the temperature of the Earth will disturb the natural water cycle. As a result, there will be a change in the rainfall pattern. This could lead to floods or droughts.

So, the correct answer is option C.

Multiple choice evs - i forests: our lifeline afforestation deforestation and its effect deforestation

Which of the following is the cause of deforestation?

  1. Urbanization

  2. Agricultural activities

  3. Forest fires

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

As the population increases, the need for land also increases, forests are cleared for the construction of roads and malls and buildings. The demand of food grains also increases, so it calls for clearing more trees and growing food crops. Forest fires also cause deforestation.

So, the correct answer is option D.

Multiple choice evs - i forests: our lifeline afforestation deforestation and its effect deforestation

Which of the following is the natural cause of deforestation?

  1. Urbanization

  2. Forest fires

  3. Agricultural activities

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Forest fires are naturally caused and not man made like urbanization and agricultural activities, hence, they are the only natural cause of deforestation. Natural fires are caused by lightning, with a very small percentage started by spontaneous combustion of dry fuel such as sawdust and leaves. Human activities may also lead to forest fire.

So, the correct answer is option B.

Multiple choice evs - i forests: our lifeline afforestation deforestation and its effect deforestation

Give examples of natural causes of deforestation.

  1. Forest fires

  2. Drought

  3. Both A and B

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Natural causes of deforestation are forest fires, droughts, exotic animals, floods, climate change, and overpopulation of foreign animals. All of these add to deforestation. Forest fires burn trees in large amounts. Many animals depend on trees for shelter. When a drought occurs, trees won’t have water to survive, also leaving animals without a stable home. Also, when animals that are not from the area come and make it their habitat, they take food, water and space up that need to be used by native animals. 

So, the correct answer is option C.