Tag: striving for a better environment

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Questions Related to striving for a better environment

Multiple choice commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

Process of soil conservation involves 

  1. Addition of fertilisers

  2. Aeration of soil

  3. Ploughing

  4. Prevent soil erosion
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Soil conservation is the prevention of soil from erosion or reduced fertility, caused by overuse, acidification, salinization or other chemical soil contamination. Techniques for improved soil conservation include crop rotation, cover crops, conservation tillage and planted windbreaks, that affect both erosion and fertility. 

Multiple choice commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

Alluvial soils are mostly found in which region?

  1. Eastern Ghats

  2. Southern India

  3. Upper Gangetic plains

  4. Eastern Himalaya
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

There is no alluvial basin in the world, which can compare with the Ganga Basin in terms of size, fertility, acreage and topography. It is the most densely populated river basin in the world and is often characterized as a granary or the bread basket of India. 

Alluvial soil is poor in organic matter deficient in nitrogen, rich in potassium and lime. They are formed by weathering of rocks and brought by river and wind. It is characteristic of Indogangetic plains.

Multiple choice commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

Which of the following statements is not correct?

  1. Forests does not protect the soil from erosion

  2. Plants and animals in a forest are not dependent on one another

  3. Forests influence the climate and water cycle

  4. Soil helps forests to grow and regenerate
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Trees reduce the rate of erosion by protecting the soil from the impact of rain,
transpiring large amounts of water, which counteracts very wet soil,
binding soil to sloping land with their roots. Forests play a major role in the prevention of the soil erosion.
Thus answer is "Option A"
Multiple choice commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

Soil erosion can be prevented by 

  1. Overgrazing

  2. Removal of vegetation

  3. Afforestation

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

Afforestation is the establishment of a forest or trees in an area where there was no forest. As the roots of trees spread deep into the layers of soil, they hold it tightly, thus preventing soil erosion. 

Therefore, the correct answer is option C.

Multiple choice commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

Soil conservation is

  1. Aeration of soil

  2. Erosion of soil

  3. Protection of soil against loss

  4. Conversion of sterile soil into fertile soil
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Soil conservation is the prevention of soil from erosion or reduced fertility caused by overuse, acidification, salinization or other chemical soil contamination. Slash-and-burn and other unsustainable methods of subsistence farming are practiced in some lesser developed areas.
Multiple choice commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

Terracing is an effective method of soil conservation in

  1. Desert areas

  2. Plain areas

  3. Hill areas

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Terracing is a soil conservation practice applied to prevent rainfall run-off on sloping land from accumulating and causing serious erosion. Terraces consist of ridges and channels constructed across-the-slope. The major benefit is the conservation of soil and water. Terraces reduce both the amount and velocity of water moving across the soil surface, which greatly reduces soil erosion. Terracing thus, permits more intensive cropping than would otherwise be possible
So, the correct answer is 'Hill areas'
Multiple choice commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

Forests

  1. Maintain natural balance

  2. Control atmospheric pollution

  3. Prevent soil erosion

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Forests are essential to life on Earth. Without them, the energy of the sun would not be harnessed through the process of photosynthesis, nor would oxygen be released through the same process. Aside from these two vital ingredients to life, they are also important in that they are home to countless species of plants and animals, many of which are endangered. Though tropical forests cover only 7% of the Earth's land mass, they are home to more than 50% of the world's 10-50 million plant and animal species. Often, the plants in the forests also provide us with medicines. On a more basic level, they have provided the human race with wood for centuries, without which people would not be living at the level of comfort they have today.
Having a few trees around homes can cut heating and cooling energy costs in half! Also, with increased levels of contamination of groundwater by chemicals, it is important to note that the thin hair-like root fibers of trees helps in filtering the water. The leaves also act as natural filters of air and water by removing particulate matter. A very important function of trees in the growing concrete-based world is in flood control. The roots hold soil in place, which would otherwise be washed away in heavy rains. Trees also act as natural barriers to the weather elements such as wind and snow. In effect, they are nature's method of climate control.
On a more social level, trees are important to people since they are very aesthetically pleasing -- they provide the scenery which helps relax people. As such, they are a valuable resource for recreation, which in turn contributes to local and national economic growth by providing more jobs.
Multiple choice commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

Soil erosion can be prevented by

  1. Increase in bird population

  2. Afforestation

  3. Over-grazing

  4. Removal of vegetation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Afforestation is the planting of vegetation. The vegetative cover protects the soil from the beating and dispersing action of the raindrops by forming a canopy over the soil surface. Vegetation also acts as a mechanical obstruction to flowing water, thus reducing its erosive potential. The plant roots help in building a better structure. They said in opening the soil and thereby accelerating water absorption and reducing surface run-off.
All other factors given in the options will promote soil erosion.
Therefore, the correct answer is option B.
Multiple choice commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment
Tree hugging movement is associated with the protection of

  1. Land

  2. Water bodies

  3. Forests

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

Tree hugging movement also known by the name of chipko movement is forest conservation movement of India which came forward when the forest cover started deteriorating at an alarming rate then soon villagers, especially women, began to organize themselves under several smaller groups and resorted to hugging the trees to stop them from being felled.

So, the correct answer is option C.

Multiple choice commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

Select the wrong statement

  1. Forests provide variety of products.

  2. Forests have greater plant diversity.

  3. Forests do not conserve soil.

  4. Forests conserve water.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Forests conserve and enhance the soils ability to sustain diverse ecosystems. They conserve the productive capacity of the land by reducing soil and nutrient loss. Forests also restrict soil and nutrient loss by reducing the volume of rain falling to the ground. The forest canopy absorbs much of the kinetic energy of rain, reducing its ability to loosen and displace soil particles and cause surface runoff.