Tag: the environment and us

Quizzes (17) Questions (187)

Questions Related to the environment and us

Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

What is the main cause for the extinction of some species in tropical forest?

  1. Deforestation

  2. Afforestation

  3. Pollution

  4. Soil erosion
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Deforestation is the depletion of forest resources. It's main cause is the explosion of human and livestock population with the increased demand requirements of the basic needs. The major effect of deforestation is the loss of precious wild life, rare species of flora and fauna. Directly or indirectly, deforestation caused intensified soil erosion, accentuated floods, drought and the worst pollution.
So, the correct answer is 'Deforestation'.
Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

Forest destruction results in

  1. Loss of wild life

  2. Floods and drought

  3. Soil erosion

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

Forest destruction i.e. deforestation has many after effects, it leads to soil erosion, loss of habitat, etiction of wildlife, floods & drought conditions.

So, the correct option is 'All the above'.

Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

Deforestation will decrease

  1. Soil erosion

  2. Land slides

  3. Soil fertility

  4. Rainfall
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Deforestation is the process of extensive cutting of trees, which finally leads to the destruction of forests as the trees are removed in large numbers, the water cycle gets disturbed which results in decrease in rainfall

So, the correct answer is 'Rainfall'

Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

Extensive planting of trees to increase forest cover is called

  1. Afforestation

  2. Agroforestry

  3. Deforestation

  4. Social forestry
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Afforestation is the process of planting a large number of trees for increasing forest cover, while deforestation is the process of cutting trees in large numbers from the forest.

So, the correct answer is 'Afforestation'

Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

Deforestation generally decreases

  1. Global warming

  2. Drought

  3. Rainfall

  4. Soil erosion
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Deforestation means clearing or removal of forest by extensive cutting of trees, water cycle which goes on in the environment gets disturbed by lack of  sufficient number of trees. Trees increase the amount of rainfall due to transpiration, therefore if number of trees decrease rainfall also decreases, while other factors given in the options A, B & D increases.

So, the correct answer is 'Rainfall'

Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

Decrease in species diversity in tropical countries is mainly due to

  1. Urbanisation

  2. Pollutionx

  3. Deforestation

  4. Soil erosion
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When there are no more individuals of a species (plant or animal) alive anywhere in the world, the species is said to be extinct. A decrease in the species diversity progresses to extinction if left uncontrolled. Extinction is also known as the process of dying out. The process is a completely natural part of evolution. But sometimes extinctions happen at a higher and a faster rate than usual. Factors such as large body size, small population, massive habitat loss and position at a higher trophic level favor extinction. As forests are the main habitat for the wild animals, their loss favors the extinction of the same.

So, the correct answer is 'Deforestation'.

Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

Choose the wrong pair

  1. Salvodora - Desert

  2. Cenchrus - Savanna

  3. Ables - Coniferous forest

  4. Quercus - Broad leaf forest

  5. Tectona - Temperate forest
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Tectona (teak) is a tropical tree genus native to South and Southeast Asia. It does not naturally grow in temperate forests, making this pairing incorrect.

Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

Main cause of extinction of species from tropical areas is

  1. Afforestation

  2. Deforestation

  3. Pollution

  4. Soil erosion
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When there are no more individuals of a species (plant or animal) alive anywhere in the world, the species is said to be extinct. Extinction is also known as the process of dying out. The process is a completely natural part of evolution. But sometimes extinctions happen at a higher and a faster rate than usual. Factors such as large body size, habitat loss, small population and position at a higher trophic level favor extinction. Since the species residing in the tropics have their major habitat in the form of forests, thus deforestation causes, extinction of such species.

So, the correct answer is 'Deforestation'.

Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

Extensive plating of trees to increase forest cover is called :

  1. Afforestation

  2. Agroforestry

  3. Deforestation

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

Afforestation is the process of planting trees in an area that did not previously have forest cover or has been cleared for a long time. It is a key strategy for increasing forest cover.

Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

Deforestation does not cause ...........

  1. Desertification

  2. Global warming

  3. Drought

  4. Forest fires
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Since deforestation means cutting down of trees. So, it will result in desertification of an area, global warming because of increase in CO$ _2$ in the environment since plants are not available to fix it by photosynthesis, and can cause drought because of imbalance in water cycle of an area. But, deforestation will never cause forest fires because the forests are not available to catch the fire as they are being cut down in case of deforestation.

So, the correct answer is 'Forest fire'.