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

Deforestation means

  1. Planting more trees

  2. Designing a forest

  3. Demanding a forest

  4. Clearing of forests and using that land for other purposes
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Deforestation is the permanent clearing of forests to make the land available for other uses. The main reasons for deforestation are overpopulation, urbanization, wood requirement, obtaining land for cattle-grazing. There has been a considerable decrease in the number of plant and animal species due to deforestation.  Other ill-effects are rise in pollution, global warming and soil erosion. Thus the correct answer is option D.

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

Ill effect of deforestation is that, it

  1. Increases temperature of earth

  2. Increases pollution level
  3. Increases CO$ _2$ level of atmosphere

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

the correct answer is 'all of the above'

Deforestation causes decrease in number of trees which can consume CO2 and give out oxygen thus there is an increase in atmospheric CO2 levels. The plants also filter out pollutants from the air , thus deforestation causes increase in pollution level.All these things collectively cause an increase in temperature of earth by increased CO2 levels causing green house effect,this is known as global warming.

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

Which of the following is not true about deforestation?

  1. Population explosion is one of the reasons for deforestation

  2. Cleaning of forest for agriculture causes deforestation

  3. Deforestation is taking place only in developing courtiers

  4. Cash crop economy of third world is a cause of deforestation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cash crop economy of third world is a cause of deforestation is not true for deforestation rest all options  are the reasons for deforestation.

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

Which of the following activities increase the concentration of carbon dioxide in the atmosphere?
(i) Deforestation
(ii) Combustion of fuel
(iii) Over hunting

  1. Deforestation

  2. Combustion of fuel

  3. Over hunting

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Deforestation and combustion of fuel increase the concentration of carbon dioxide in the atmosphere. Deforestation is the excessive cutting down of trees which increases the carbon dioxide concentration in the atmosphere. Fuels burns in the atmosphere in the presence of oxygen. Burning of fuel in the sufficient supply of oxygen leads to the production of carbon dioxide while the insufficient supply of oxygen leads to the production of carbon monoxide.

So, the correct answer is option D.

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

Deforestation may reduce the chances of

  1. Rainfall

  2. Land slides

  3. Soil erosion

  4. Frequent cyclones
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Trees play a crucial role in the water cycle through transpiration, which contributes to cloud formation and rainfall. Removing forests reduces this process, thereby decreasing the likelihood of rainfall in the area.

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

Which of the following factors increases the temperature of the forests?

  1. Increase in percentage of carbon dioxide

  2. Excessive leaching

  3. Afforestation

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

Carbon dioxide is a greenhouse gas that traps heat in the atmosphere. Deforestation reduces the number of trees available to absorb CO2, leading to higher concentrations and increased temperatures.

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

Which of the following will be affected due to the absence of forest?

  1. Food and shelter of animals

  2. Percentage of carbon dioxide

  3. Percentage of oxygen

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

Forests provide habitat and food for animals, act as carbon sinks (regulating CO2), and produce oxygen. The absence of forests negatively impacts all these critical ecological functions.

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

Which of the following are the impacts of deforestation?

  1. Decline in the biodiversity.

  2. Global Warming

  3. Increase in the percentage of pollutants

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

Deforestation leads to habitat loss (biodiversity decline), increased greenhouse gases (global warming), and reduced air filtration (increased pollutants). All these are well-documented impacts.

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

Which of the following disaster is caused by deforestation?

  1. Infertility of soil

  2. Climatic change

  3. Loss of flora and fauna

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

Deforestation causes soil degradation, alters local and global climates, and destroys habitats for flora and fauna. All these are significant environmental disasters resulting from forest loss.

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

Identify the incorrect statement.

  1. Forest prevents soil erosion.

  2. Forest influences climate and water cycle.

  3. Soil helps forest to regenerate.

  4. Plants and animals in the forest are not dependent on one another.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Plants provide shelter for animals and they make oxygen for the animals to live. When animals die they decompose and become natural fertilizer plants. Plants depend on animals for nutrients, pollination and seed dispersal. 
  • Hence Plants and animals in the forest are dependent on one another.
  • Hence the given statement Plants and animals in the forest are not dependent on one another is a wrong statement.
  • So, the correct answer is 'Option D'.
Multiple choice evs - i forests: our lifeline afforestation deforestation and its effect deforestation

One of the main causes of the silting of big dams is?

  1. Deforestation in the catchments area

  2. Increase in the population of wild animals in the forests around the dam

  3. Insufficient rainfall

  4. Excessive evaporation of water
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When forests in the catchment area are removed, soil erosion increases significantly. This eroded soil is washed into rivers and dams, leading to the accumulation of sediment, known as silting.