Tag: protecting our environment

Questions Related to protecting our environment

In hilly areas, erosion is minimised by

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

  1. Terracing

  2. Manuring

  3. Ploughing

  4. Mixed cropping

Show answer
Correct Option: A
Explanation:

Terracing is a process of making sloped plane into series of succesively receding flat surfaces or platforms resembling stairs, this is how erosion is minimised.

So, the correct answer is 'Terracing'

Which of the following area possess poorest decomposition of dead organic matter:-

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

  1. Tropical rain forest

  2. Temperature deciduous forest

  3. Tundra

  4. Taiga

Show answer
Correct Option: A
Explanation:
One reason the rainforest soil is so poor is that a large portion of the supplements is put away in the plants themselves. In any woods, dead natural issue tumbles to the ground, giving profitable supplements to new development. In cooler or drier atmospheres, the supplements develop in the dirt. 
So, the correct option is 'Tropical rain forest'.

Soil erosion can be prevented by

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

  1. Restricted human activity

  2. Good plant cover

  3. Checking movement of animals

  4. Wind screen alone

Show answer
Correct Option: B
Explanation:

Soil erosion is the phenomenon in which the top most layer of soil gets lost, since plants have the capability of holding the soil particles together and prevent them from being eroded away

So, the correct answer is 'Good plant cover'

Which of the following reasons contribute to negative soil pollution?

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

  1. Reduction of soil productivity due to the addition of agrochemicals

  2. Reduction of soil productivity due to soil erosion and overuse

  3. Reduction of soil productivity due to the addition of industrial wastes

  4. Reduction of soil productivity due to faulty sanitation

Show answer
Correct Option: B
Explanation:

Soil pollution greatly due to use of  large amount of herbicides, pesticides. There also some more reason of soil pollution like industrial wastes are dumped into fertile soil which get polluted and also not having proper satiation. But soil erosion is not responsible for soil pollution, soil erosion is mainly due to deforestation. So B option is right. 

Process of soil conservation involves 

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

  1. Addition of fertilisers

  2. Aeration of soil

  3. Ploughing

  4. Prevent soil erosion

Show answer
Correct Option: D
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. 

The management of biosphere in such a way that it may yield one greatest suitable benefit to present generation while maintaining its potential to meet the needs of future generation is 

evs - i rules are for everyone soil and its conservations soil pollution-control protecting our environment sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

  1. Conservation

  2. Afforestation

  3. Fossilization

  4. Over-exploitation

Show answer
Correct Option: B
Explanation:

Afforestation is the act of planting trees in a barren land or converting a farmland to a forest in order to use the trees for commercial purposes. Many programs are organised by the government as well as non-government associations to plant trees and thus improving biodiversity.

So, the correct answer is option B.

Alluvial soils are mostly found in which region?

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

  1. Eastern Ghats

  2. Southern India

  3. Upper Gangetic plains

  4. Eastern Himalaya

Show answer
Correct Option: C
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.

Soil erosion can be prevented by 

evs - i rules are for everyone soil and its conservations soil pollution-control protecting our environment sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

  1. Over grazing

  2. Removal of vegetation

  3. Afforestation (plantation)

  4. Increasing bird population

Show answer
Correct Option: C
Explanation:

Afforestation is the process of establishing a forest on land, that has not been a forest for a long time by planting trees or their seeds. Soil erosion is when the soil is blown away by the wind or washed away by the rain. Roots of trees or plants hold the soil. Thus, when more trees are planted their roots do not allow the soil to be blown or washed away and prevent soil erosion.

Which of the following statements is not correct?

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

  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

Show answer
Correct Option: A
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"

Soil conservation is the process where 

evs - i rules are for everyone soil and its conservations soil pollution-control protecting our environment sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

  1. Soil is aerated

  2. Sterile soil is converted into fertile soil

  3. Soil is protected against loss

  4. Both B and C

Show answer
Correct Option: D
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.