Tag: commercial studies

Questions Related to commercial studies

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

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

  1. Increase in percentage of carbon dioxide

  2. Excessive leaching

  3. Afforestation

  4. All of the above

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Correct Option: A

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

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

  1. Food and shelter of animals

  2. Percentage of carbon dioxide

  3. Percentage of oxygen

  4. All of the above

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Correct Option: D

Trees are known as lungs of forest.

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

  1. True

  2. False

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Correct Option: A
Explanation:

Trees in general are known as 'lungs of Earth' because they absorb large amounts of carbon dioxide and release large amounts of oxygen due to photosynthesis. This helps maintain a balance between the proportion of oxygen and carbon dioxide in the atmosphere as the oxygen released by the plants during photosynthesis is utilized by various organisms including plants for respiration.

So, the correct answer is 'True'

Deforestation causes climatic changes.

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

  1. True

  2. False

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Correct Option: A
Explanation:

cutting down trees reverses the effects of carbon sequestration and releases greenhouse gases (including carbon dioxide) into the atmosphere. Deforestation changes the landscape and reflectivity of earth's surface, i.e. decreasing albedo.

Which of the following activities leads to deforestation?

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

  1. Droughts

  2. Forest fire

  3. Soil erosion

  4. Both A and B

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Correct Option: D

Which of the following are the impacts of deforestation?

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

  1. Decline in the biodiversity.

  2. Global Warming

  3. Increase in the percentage of pollutants

  4. All of the above

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Correct Option: D

Which of the following disaster is caused by deforestation?

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

  1. Infertility of soil

  2. Climatic change

  3. Loss of flora and fauna

  4. All of the above

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Correct Option: D

The microorganism of the forest feeds on 

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

  1. Carnivores

  2. Omnivores

  3. Humus

  4. None of the above

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Correct Option: C

Which of the following properties of soil will be affected in case of deforestation?

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

  1. Soil fertility

  2. Soil pH

  3. Soil texture

  4. Both A and B

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Correct Option: D

Identify the incorrect statement.

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

  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.

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Correct Option: D
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'.