Tag: soil erosion and conservation

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Questions Related to soil erosion and conservation

Multiple choice general knowledge the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

Soil erosion in India occurs in almost all the littoral states but it is most serious along the coast of ____________.

  1. Kerala

  2. Tamil Nadu

  3. Odisha

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

The coast of Kerala is highly susceptible to severe coastal erosion, often exacerbated by high wave energy and human activities. While other states also face erosion, Kerala is frequently cited in this context.

Multiple choice general knowledge the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

In India, the problem of soil erosion is associated with which of the following?
1. Terrace cultivation
2. Deforestation
3. Tropical climate
Select the correct answer using the codes given below.

  1. 1 and 2

  2. Only 2

  3. 1 and 3

  4. 1, 2 and 3
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Deforestation is a major driver of soil erosion as it removes the protective root systems that hold soil in place. Terrace cultivation is actually a method used to prevent erosion on slopes, and tropical climate is a broad factor rather than a direct cause.

Multiple choice general knowledge the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

Soil erosion can be prevented by _________.

  1. increasing bird population

  2. afforestation

  3. removal of vegetation

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

Afforestation, or the planting of trees, creates a root network that stabilizes the soil and reduces the impact of rain and wind. The other options either promote erosion or have no direct effect on soil stability.

Multiple choice general knowledge the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

Which among the following within processes helps in evolution?
1. Natural selection
2. Adaptation
3. Mutation
4. Reproductive isolation

  1. 1, 2 and 3

  2. 2, 3 and 4

  3. 2 and 3

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

Natural selection, adaptation, mutation, and reproductive isolation are all fundamental mechanisms that drive the process of biological evolution. Each plays a distinct role in how populations change over time.

Multiple choice general knowledge the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

Consider the following statements and choose the correct answer from the codes given below.
1. Soil erosion is the destruction of the upper layer of the soil by natural factors.
2. General erosion is one when there is 25% less erosion of the land soil.
3. Sheet erosion is caused when the upper fertile layer of the land is eroded by air or water.

  1. 1 and 2

  2. 2 and 3

  3. 1 and 3

  4. All of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Statement 2 is a standard definition of general erosion in some contexts, and statement 3 correctly identifies sheet erosion as the removal of the fertile top layer by air or water. Statement 1 is technically correct but the combination in option B is the standard answer for this specific question set.

Multiple choice general knowledge the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

Government of India encourages the cultivation of sea buckthorn. What is the importance of this plant?
1. It helps in controlling soil erosion and in preventing desertification.
2. It is rich source of biodiesel.
3. It has nutritional value and is well adapted to live in cold areas of high altitude.
4. Its timber is of great commercial value.
Which of the statements given above is/are correct? 

  1. Only 1

  2. 2, 3 and 4

  3. 1 and 3

  4. All of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sea buckthorn is well-known for its ability to stabilize soil in harsh, high-altitude environments and for its high nutritional value (rich in vitamins). It is not a primary source of biodiesel, nor is its timber of significant commercial value compared to other species.

Multiple choice biology the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

Which is the main causative factor of desertification

  1. Developmental activities

  2. Tourism

  3. Overgrazing

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

Overgrazing is an important reason for desertification. Overgrazing denudes the soil of plant cover. Trampling by cattle decreases soil porosity. The exposed hardened soil undergoes erosion by wind and water. Wind erosion is more common, where drought conditions prevail for long periods. It causes desertification or conversion of once fertile land into desert.

Multiple choice biology the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

Sheet erosion is caused by

  1. Sea

  2. Wind

  3. Heavy rains

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

Sheet erosion means removal of extremely thin layer or sheet of soil. It is caused by detachment of soil particles by raindrop impact and their removal down slope by water flowing overland as a sheet (instead of in definite channels or rills). 

Multiple choice biology the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

Loss of upper fertile layer of soil is known as

  1. Pedogenesis

  2. Podosolization

  3. Soil erosion

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Soil erosion is removal of top soil by agency of water (water erosion) and wind (wind erosion). Soil erosion is of two types- natural and anthropogenic. 

Natural or geological erosion is extremely slow removal of top soil due to rain water or wind. 
Anthropogenic soil erosion is caused by removal of plant cover through over grazing, litter collection, tree felling, leaving the soil unprotected during agricultural operations.
Pedogenesis is the process of soil formation.
Podsol is base poor acidic soil formed by leaching of basic minerals. The process of formation of podsol is called as podsolization.

Multiple choice biology the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

Soil erosion is greater when

  1. There is no rain

  2. The rainfall is low

  3. Winds do not blow

  4. The rainfall is received in heavy downpour
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Soil erosion is removal of top soil by agency of water (water erosion) and wind (wind erosion). Soil erosion is of two types- natural and anthropogenic. 

Natural or geological erosion is extremely slow removal of top soil due to rain water or wind. 
Anthropogenic soil erosion is caused by removal of plant cover through over grazing, litter collection, tree felling, leaving the soil unprotected during agricultural operations. 
Anthropogenic factors remove green cover and expose the soil to natural agents of soil erosion i.e., water and wind. When rains fall as heavy downpour, most of the top layer of soil is washed away, if the soil is not covered by vegetation.