Tag: soil as a natural resource

Questions Related to soil as a natural resource

Which among the following result in the formation of soil?

  1. Radiation

  2. Weathering

  3. Erosion

  4. Pollution


Correct Option: B

What is best pH of soil for cultivation?

  1. 3.4 - 5.4

  2. 4.5 - 5.5

  3. 5.5 - 6.5

  4. 6.5 - 7.5


Correct Option: C
Explanation:

  • Soil nature is described in pH values. It can be alkaline, acidic or neutral. 
  • Highly acidic and highly saline soil often remains injurious for plant growth, microorganisms, etc. 
  • Soil pH strongly affects microbial activities. Neutral or slightly acidic soil (5.5-6.5) remains best for the growth of the majority of plants.

Therefore, the correct answer is option C.

Soil is the component of

  1. Atmosphere

  2. Lithosphere

  3. Hydrosphere

  4. Exosphere


Correct Option: B
Explanation:

The lithosphere is the solid portion of the Earth. It is a dense shell of material, that surrounds the entire planet. Even though most of the Earth's surface is covered with water, underneath, that water is a solid layer of rock. With the exception of ice, basically any solid non-organic material on the Earth is from the lithosphere. This includes soil, rocks, sand, etc.

Which of the following is the important natural resources for plants and animals?

  1. Coal

  2. Petrol

  3. Diesel

  4. Soil


Correct Option: D
Explanation:

Soil, as we know an important abiotic component of our environment. It provides nutrition and water to grow crops. They hold the roots of the trees and are extremely necessary for the proper growth of plants and trees. In the absence of proper nutrients in the soil, the plants and trees show nutritional deficiencies and retarded growth.

Apart from this, animals depend on plants for their survival and so they are dependant on soil for providing habitat and proper development of plants that they consume.
Coal, petroleum and natural gas are important fossil fuels that also from non-renewable resources that are used for various reasons like running automobiles, house gas cylinders etc.

They are remnants of dead plants and animals over a long period of time. So, they are not related to the growth of plants and animals.


Soil helps plants by

  1. Supplying them water and minerals.

  2. Supplying them air.

  3. Preparing food in their plants.

  4. Helping them move from one place to another.


Correct Option: A
Explanation:

The roots of the plants are held firmly in the soil. Different types of soil have different texture and particles. They have different levels of minerals and nutrients embedded in them. Roots absorb water from the soil by the process of osmosis. Along with water, mineral nutrients also enter the soil.

So, we can say that option A "Supplying them water and minerals" is the correct answer. 

Tectonics is the study of .................

  1. Volcanos

  2. Earth's crust

  3. Sand dunes

  4. Sun


Correct Option: B
Explanation:

Tectonic is the study of the earth's crust. Tectonics is concerned with the processes which control the structure and properties of the Earth's crust, and its evolution through time. It was considered that earth was made up of tectonic plates. Tectonics also provides a framework to understand the earthquake and volcanic belts which directly affect much of the global population. Tectonic studies are important for understanding erosion patterns in geomorphology and search for petroleum and metallic ores. 

Therefore, the correct answer is option B.

Mulching helps in

  1. Soil fertility

  2. Moisture conservation

  3. Improvement of soil structure

  4. Soil sterility


Correct Option: B
Explanation:

Mulching refers to covering of harvested field with plant litter or polythene of low density, in order to decrease run off, prevent growth of weeds and retention of water.

Which of the following pairs is mismatch?

  1. Pedology - Study of soil 

  2. Physiology - Study of processes and functions of life

  3. Kinesiology - Study of fossils

  4. Limnology - Study of fresh water ecosystems


Correct Option: C
Explanation:

  • Pedology is the study of soils in their natural environment. It is one of two main branches of soil science.
  • Physiology is the branch of biology that deals with the normal functions and processes of living organisms and their parts.
  • Kinesiology is the scientific study of human or non-human body movement. Kinesiology addresses the physiological, biomechanical, and psychological dynamic principles and mechanisms of movement.
  • Limnology is the study of the biological, chemical, and physical features of lakes and other bodies of fresh water.
So, the correct answer is 'Kinesiology - Study of fossils'.

The top most layer of the earth that supports life is called as

  1. Rocks

  2. Soil

  3. Air

  4. Water


Correct Option: B

Pedology is science of

  1. Earth

  2. Soil

  3. Diseases

  4. Pollution


Correct Option: B
Explanation:

Pedology is the study of soils in their natural environment. It is one of two main branches of soil science, the other being edaphology. Pedology deals with pedogenesis, soil morphology, and soil classification, while edaphology studies the way soils influence plants, fungi, and other living things. The quantitative branch of pedology is called pedometrics. Hence, pedology is the science of soil.

So, the correct answer is 'soil'.